Part No. 10179SL
Service Manual
(Model 07066)
Pro Sweep
Preface
The purpose of this publication is to provide the service
technician with information for troubleshooting, testing
and repair of major systems and components on the Pro
Sweep (Model 07066).
This safety symbol means DANGER, WARNING,
or CAUTION, PERSONAL SAFETY INSTRUC-
TION. When you see this symbol, carefully read
the instructions that follow. Failure to obey the
instructions may result in personal injury.
REFER TO THE OPERATOR’S MANUAL FOR OPER-
ATING, MAINTENANCE
AND ADJUSTMENT
INSTRUCTIONS. Space is provided in Chapter 2 of this
book to insert the Operator’s Manual and Parts Catalog
for your machine. Additional copies of the Operator’s
Manual and Parts Catalog are available on the internet
at www.Toro.com.
NOTE: A NOTE will give general information about the
correct operation, maintenance, service, testing or re-
pair of the machine.
The Toro Company reserves the right to change product
specifications or this publication without notice.
IMPORTANT: The IMPORTANT notice will give im-
portant instructions which must be followed to pre-
vent damage to systems or components on the
machine.
E The Toro Company - 2011
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Table Of Contents
Chapter 1 -- Safety
Chapter 4 -- Electrical System
Safety Instructions . . . . . . . . . . . . . . . . . . . . . . . . . . 1 -- 2
Jacking Instructions . . . . . . . . . . . . . . . . . . . . . . . . . 1 -- 4
Securing Pro Sweep to Tow Vehicle . . . . . . . . . . . 1 -- 5
Safety and Instruction Decals . . . . . . . . . . . . . . . . 1 -- 5
General Information . . . . . . . . . . . . . . . . . . . . . . . . 4 -- 2
Special Tools . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 -- 2
Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 -- 3
Safety Interlock System . . . . . . . . . . . . . . . . . . . . . 4 -- 6
Adjustments . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 -- 7
Component Testing . . . . . . . . . . . . . . . . . . . . . . . . . 4 -- 8
Service and Repairs . . . . . . . . . . . . . . . . . . . . . . . 4 -- 18
Chapter 2 -- Product Records and Maintenance
Product Records . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 -- 1
Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 -- 1
Equivalents and Conversions . . . . . . . . . . . . . . . . 2 -- 2
Torque Specifications . . . . . . . . . . . . . . . . . . . . . . . 2 -- 3
Chapter 5 -- Chassis
Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 -- 2
General Information . . . . . . . . . . . . . . . . . . . . . . . . 5 -- 3
Service and Repairs . . . . . . . . . . . . . . . . . . . . . . . . 5 -- 4
Chapter 3 -- Hydraulic System
General Information . . . . . . . . . . . . . . . . . . . . . . . . 3 -- 2
Hydraulic Schematic . . . . . . . . . . . . . . . . . . . . . . . . 3 -- 7
Hydraulic Flow Diagrams . . . . . . . . . . . . . . . . . . . . 3 -- 8
Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 -- 16
Service and Repairs . . . . . . . . . . . . . . . . . . . . . . . 3 -- 22
PARKER TORQLINKTM SERVICE PROCEDURE
Chapter 6 -- Electrical Diagrams
Electrical Schematic . . . . . . . . . . . . . . . . . . . . . . . . 6 -- 3
Circuit Drawings . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 -- 4
Wire Harness Drawings . . . . . . . . . . . . . . . . . . . . 6 -- 11
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Chapter 1
Safety
Table of Contents
SAFETY INSTRUCTIONS . . . . . . . . . . . . . . . . . . . . . . 2
Before Operating . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
While Operating . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
Maintenance and Service . . . . . . . . . . . . . . . . . . . . 3
JACKING INSTRUCTIONS . . . . . . . . . . . . . . . . . . . . . 4
SECURING PRO SWEEP TO TOW VEHICLE . . . . 5
SAFETY AND INSTRUCTION DECALS . . . . . . . . . . 5
Pro Sweep
Page 1 -- 1
Safety
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Safety Instructions
The Pro Sweep is designed and tested to offer safe ser-
vice when operated and maintained properly. Although
hazard control and accident prevention partially are de-
pendent upon the design and configuration of the ma-
chine, these factors are also dependent upon the
awareness, concern and proper training of the person-
nel involved in the operation, transport, maintenance
and storage of the machine. Improper use or mainte-
nance of the machine can result in injury or death. To re-
duce the potential for injury or death, comply with the
following safety instructions.
WARNING
To reduce the potential for injury or death,
comply with the following safety instructions.
Before Operating
1. Read and understand the contents of the Operator’s
Manual before operating the machine. Become familiar
with the controls and know how to stop the sweeper
quickly. Additional copies of the Operator’s Manual are
available on the internet at www.Toro.com.
4. Make sure that the tow vehicle is carefully selected
to assure the best performance and safe operation of
the Pro Sweep.
5. Assure sweeper interlock system functions correctly
so sweeper brush does not rotate unless sweeper is
positioned below the transport position.
2. Keep all shields, safety devices and decals in place.
If a shield, safety device or decal is defective, illegible
or damaged, repair or replace it before operating the
machine.
6. Make sure that operator is familiar with tow vehicle
operation.
3. Make sure that any loose nuts, bolts or screws are
tightened to ensurethat themachine is in safeoperating
condition.
While Operating
1. Operator should be in the operators position when
operating the tow vehicle and sweeper. Stay away from
the sweeper when the brush is engaged.
6. While operating, the Pro Sweep may exceed noise
levels of 85dB(A) at the operator position. Hearing
protection is recommended for prolonged exposure to
reduce the potential of permanent hearing damage.
2. Make sure that hitch pin is properly positioned in tow
vehicle and sweeper. Hitch pin should be secured with
hairpin clip.
7. Before leaving the operator’s position of the tow ve-
hicle:
3. Donot runtow vehicleengineinaconfinedareawith-
out adequate ventilation. Exhaust fumes are hazardous
and could possibly be deadly.
A. Stop sweeper brush by shutting off vehicle hy-
draulic flow to the sweeper.
B. Make sure that dump hopper is lowered.
4. Do not touch tow vehicle engine, muffler or exhaust
pipe while engine is running or soon after it is stopped.
These areas could be hot enough to cause burns.
C. Ensure that vehicle tractionlever is in neutral, ap-
ply parking brake, stop engine and remove key from
ignition switch.
5. If abnormal vibration is detected, stop tow vehicle
and sweeper immediately and determine source of
vibration. Correct problems before resuming the use of
sweeper.
8. Position sweeper on level surface, empty hopper
and chock sweeper wheels before disconnecting Pro
Sweep from tow vehicle.
Page 1 -- 2
Safety
Pro Sweep
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Maintenance and Service
1. Before servicing or making adjustments, empty Pro
Sweep hopper and position sweeper on a level surface.
Chock sweeper wheels to prevent it from moving. If
sweeper is attached to tow vehicle, apply tow vehicle
parking brake, stop engine and remove key from the
ignition switch.
7. If hopper is raised, install hopper safety support on
lift cylinder to ensure that unexpected shifting of sweep-
er frame does not occur.
8. Disconnect electrical power harness from tow ve-
hicle before servicing the sweeper.
9. If major repairs are ever needed or assistance is de-
sired, contact an Authorized Toro Distributor.
2. Make sure machine is in safe operating condition by
keeping all nuts, bolts and screws tight.
10.At the time of manufacture, the machine conformed
to all applicable safety standards. To assure optimum
performance and continued safety certification of the
machine, use genuine Toro replacement parts and ac-
cessories. Replacement parts and accessories made
by other manufacturers may result in non-conformance
with the safety standards, and the warranty may be
voided.
3. Make sure all hydraulic line connectors are tight and
all hydraulic hoses and lines are in good condition be-
fore applying pressure to the hydraulic system.
4. Keepbody andhands away from pinholeleaks inhy-
draulic lines that eject high pressure hydraulic fluid. Use
cardboard or paper to find hydraulic leaks. Hydraulic
fluid escaping under pressure can penetrate skin and
cause injury. Hydraulic fluid accidentally injected into
the skin must be surgically removed within a few hours
by a doctor familiar with this form of injury or gangrene
may result.
11.When changing tires or performing other service,
use correct hoists and jacks. Make sure machine is
parked on a solid level surface such as a concrete floor
with the hopper empty and lowered. Have sweeper at-
tached to towing vehicle, apply vehicle parking brake,
stop engine and remove key from the ignition switch. Al-
ways chock or block wheels. Use appropriate jack
stands to support the raised machine. If the machine is
not properly supported by appropriate jack stands, the
machine may move or fall, which may result in personal
injury (see Jacking Instructions in this chapter).
5. Before disconnecting any hydraulic component or
performing any work on the hydraulic system, all pres-
sure in system must be relieved. See Relieving Hydrau-
lic System Pressure in the General Information section
of Chapter 3 -- Hydraulic System.
6. If hopper is to be raised, make sure that sweeper is
not placed in the offset position.
Pro Sweep
Page 1 -- 3
Safety
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Jacking Instructions
CAUTION
1
When changing tires or performing other ser-
vice, use correct hoists and jacks to support
sweeper. Make sure machine is parked on a sol-
id level surface such as a concrete floor. Always
chock or block wheels. Use appropriate jack
stands to support the raised machine. If the ma-
chine is not properly supported by appropriate
jack stands, the machine may move or fall,
which may result in personal injury.
2
1. Position sweeper on a level surface with dump hop-
per empty and lowered. Have sweeper attached to tow-
ing vehicle, apply vehicle parking brake, stop engine
and remove key from the ignition switch. Chock sweep-
er wheels to prevent it from moving.
Figure 1
1. Wheel
2. Frame jacking point
2. Position jack securely under the main sweeper
frame (Fig. 1). Do not use the axle as a jacking point.
3. Carefully jack machine off the ground.
4. Position appropriate jack stands under the main
frame to support the sweeper.
Page 1 -- 4
Safety
Pro Sweep
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Securing Pro Sweep to Tow Vehicle
While operating or servicing the Pro Sweep, make sure
that hitch pin is properly positioned in tow vehicle hitch
and sweeper tongue. Hitch pin should be secured with
hairpin clip (Fig. 2).
1
2
Figure 2
1. Hitch pin
2. Hairpin clip
Safety and Instruction Decals
Numerous safety and instruction decals are affixed to
the Pro Sweep. If any decal becomes illegible or dam-
aged, install a new decal. Part numbers for replacement
decals are listed in your Parts Catalog. Order replace-
ment decals from your Authorized Toro Distributor.
Pro Sweep
Page 1 -- 5
Safety
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Page 1 -- 6
Safety
Pro Sweep
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Chapter 2
Product Records and Maintenance
Table of Contents
PRODUCT RECORDS . . . . . . . . . . . . . . . . . . . . . . . . . 1
MAINTENANCE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
EQUIVALENTS AND CONVERSIONS . . . . . . . . . . . 2
Decimal and Millimeter Equivalents . . . . . . . . . . . . 2
U.S. to Metric Conversions . . . . . . . . . . . . . . . . . . . 2
TORQUE SPECIFICATIONS . . . . . . . . . . . . . . . . . . . . 3
Fastener Identification . . . . . . . . . . . . . . . . . . . . . . . 3
Using a Torque Wrench with an Offset Wrench . . 3
Standard Torque for Dry, Zinc Plated and
Steel Fasteners (Inch Series) . . . . . . . . . . . . . . . 4
Standard Torque for Dry, Zinc Plated and
Steel Fasteners (Metric Fasteners) . . . . . . . . . . . 5
Other Torque Specifications . . . . . . . . . . . . . . . . . . 6
Conversion Factors . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Product Records
InsertOperator’s Manual and Parts Catalog for your Pro
Sweep at the end of this chapter. Additionally, if any op-
tional equipment or accessories have been installed to
your machine, insert the Installation Instructions, Oper-
ator’s Manuals and Parts Catalogs for those options at
the end of this chapter.
Maintenance
Maintenance procedures and recommended service in-
tervals for the Pro Sweep are covered in the Operator’s
Manual. Refer tothatpublicationwhen performingregu-
lar equipment maintenance.
Pro Sweep
Page 2 -- 1
Product Records and Maintenance
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Equivalents and Conversions
0.09375
Page 2 -- 2
Product Records and Maintenance
Pro Sweep
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Torque Specifications
Recommended fastener torque values are listed in the
following tables. For critical applications, as determined
by Toro, either the recommended torque or a torque that
is unique to the application is clearly identified and spe-
cified in this Service Manual.
Asnoted inthe followingtables, torquevalues shouldbe
reduced by 25% for lubricated fasteners to achieve
the similar stress as a dry fastener. Torque values may
also have to be reduced when the fastener is threaded
into aluminum or brass. The specific torque value
should be determined based on the aluminum or brass
material strength, fastener size, length of thread en-
gagement, etc.
These Torque Specifications for the installation and
tightening of fasteners shall apply to all fasteners which
do not have a specific requirement identified in this Ser-
vice Manual. The following factors shall be considered
when applying torque: cleanliness of the fastener, use
of a thread sealant (e.g. Loctite), degree of lubrication
on the fastener, presence of a prevailing torque feature,
hardness of the surface underneath the fastener’s head
or similar condition which affects the installation.
The standard method of verifying torque shall be per-
formed by marking a line on the fastener (head or nut)
and mating part, then back off fastener 1/4 of a turn.
Measure the torque required to tighten the fastener until
the lines match up.
Fastener Identification
Grade 1
Grade 5
Grade 8
Class 8.8
Class 10.9
Inch Series Bolts and Screws
Figure 1
Metric Bolts and Screws
Figure 2
Using a Torque Wrench with an Offset Wrench
Useofanoffsetwrench(e.g. crowfootwrench)willaffect
torque wrench calibration due to the effective change of
torque wrench length. When using a torque wrench with
an offset wrench, multiply the listed torque recommen-
dation by the calculated torque conversion factor (Fig.
3) to determine proper tightening torque. Tightening
torque when using a torque wrench with an offset
wrench will be lower than the listed torque recommen-
dation.
If the listed torque recommendation for a fastener is
from 76 to 94 ft--lb, the proper torque when using this
torque wrench with an offset wrench would be from 72
to 89 ft--lb.
Offset wrench
Torque wrench
(effective length of
torque wrench)
A
Example: The measured effective length of the torque
wrench (distance from the center of the handle to the
center of the square drive) is 18”.
B
(effective length of torque
wrench + offset wrench)
Themeasuredeffectivelengthofthetorquewrenchwith
the offset wrench installed (distance from the center of
the handle to the center of the offset wrench) is 19”.
TORQUE CONVERSION FACTOR = A / B
Figure 3
The calculated torque conversion factor for this torque
wrench with this offset wrench would be 18 / 19 = 0.947.
Pro Sweep
Page 2 -- 3
Product Records and Maintenance
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Standard Torque for Dry, Zinc Plated and Steel Fasteners (Inch Series)
Grade 1, 5 &
8 with Thin
Height Nuts
SAE Grade 1 Bolts, Screws, Studs &
Sems with Regular Height Nuts
(SAE J995 Grade 2 or Stronger Nuts)
SAE Grade 5 Bolts, Screws, Studs &
Sems with Regular Height Nuts
(SAE J995 Grade 2 or Stronger Nuts)
SAE Grade 8 Bolts, Screws, Studs &
Sems with Regular Height Nuts
(SAE J995 Grade 5 or Stronger Nuts)
Thread Size
in--lb
in--lb
N--cm
in--lb
15 + 2
N--cm
169 + 23
192 + 23
328 + 34
350 + 45
475 + 56
542 + 56
1130 + 113
1299 + 136
2260 + 282
2542 + 282
N--m
in--lb
23 + 3
N--cm
262 + 34
282 + 34
463 + 56
486 + 56
678 + 68
768 + 79
1582 + 169
1808 + 192
3390 + 339
3672 + 373
N--m
# 6 -- 32 UNC
# 6 -- 40 UNF
# 8 -- 32 UNC
# 8 -- 36 UNF
# 10 -- 24 UNC
# 10 -- 32 UNF
1/4 -- 20 UNC
1/4 -- 28 UNF
5/16 -- 18 UNC
5/16 -- 24 UNF
10 + 2
13 + 2
147 + 23
17 + 2
25 + 3
29 + 3
41 + 5
13 + 2
18 + 2
25 + 5
30 + 5
282 + 30
339 + 56
31 + 4
43 + 5
42 + 5
60 + 6
48 + 5
68 + 7
48 + 7
53 + 7
53 + 7
65 + 10
105 + 15
128 + 17
ft--lb
599 + 79
734 + 113
1186 + 169
1446 + 192
N--m
100 + 10
115 + 12
200 + 25
225 + 25
ft--lb
140 + 15
160 + 17
300 + 30
325 + 33
ft--lb
115 + 15
138 + 17
ft--lb
3/8 -- 16 UNC
3/8 -- 24 UNF
7/16 -- 14 UNC
7/16 -- 20 UNF
1/2 -- 13 UNC
1/2 -- 20 UNF
5/8 -- 11 UNC
5/8 -- 18 UNF
3/4 -- 10 UNC
3/4 -- 16 UNF
7/8 -- 9 UNC
16 + 2
16 + 2
22 + 3
30 + 3
41 + 4
43 + 5
58 + 7
17 + 2
18 + 2
24 + 3
35 + 4
47 + 5
50 + 6
68 + 8
27 + 3
27 + 3
37 + 4
50 + 5
68 + 7
70 + 7
95 + 9
29 + 3
29 + 3
39 + 4
55 + 6
75 + 8
77 + 8
104 + 11
142 + 15
163 + 16
285 + 28
325 + 33
508 + 52
569 + 58
813 + 81
904 + 89
30 + 3
48 + 7
65 + 9
75 + 8
102 + 11
115 + 12
203 + 20
230 + 24
359 + 37
407 + 41
583 + 61
644 + 65
105 + 11
120 + 12
210 + 21
240 + 24
375 + 38
420 + 43
600 + 60
667 + 66
32 + 4
53 + 7
72 + 9
85 + 9
65 + 10
75 + 10
93 + 12
115 + 15
140 + 20
155 + 25
88 + 12
95 + 15
140 + 20
165 + 25
225 + 25
260 + 30
119 + 16
129 + 20
190 + 27
224 + 34
305 + 34
353 + 41
150 + 15
170 + 18
265 + 27
300 + 30
430 + 45
475 + 48
7/8 -- 14 UNF
NOTE: Reduce torque values listed in the table above
by 25% for lubricated fasteners. Lubricated fasteners
are defined as threads coated with a lubricant such as
engine oil or thread sealant such as Loctite.
NOTE: The nominal torque values listed above for
Grade 5 and 8 fasteners are based on 75% of the mini-
mum proof load specified in SAE J429. The tolerance is
approximately + 10% of the nominal torque value. Thin
height nuts include jam nuts.
NOTE: Torque values may have to be reduced when
installing fasteners into threaded aluminum or brass.
The specific torque value should be determined based
on the fastener size, the aluminum or base material
strength, length of thread engagement, etc.
Page 2 -- 4
Product Records and Maintenance
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Standard Torque for Dry, Zinc Plated and Steel Fasteners (Metric Fasteners)
Class 8.8 Bolts, Screws and Studs with
Regular Height Nuts
Class 10.9 Bolts, Screws and Studs with
Thread Size
Regular Height Nuts
(Class 10 or Stronger Nuts)
(Class 8 or Stronger Nuts)
M5 X 0.8
M6 X 1.0
57 + 6 in--lb
96 + 10 in--lb
19 + 2 ft--lb
644 + 68 N--cm
1085 + 113 N--cm
26 + 3 N--m
78 + 8 in--lb
881 + 90 N--cm
1503 + 158 N--cm
38 + 4 N--m
133 + 14 in--lb
28 + 3 ft--lb
M8 X 1.25
M10 X 1.5
M12 X 1.75
M16 X 2.0
M20 X 2.5
38 + 4 ft--lb
52 + 5 N--m
54 + 6 ft--lb
73 + 8 N--m
66 + 7 ft--lb
90 + 10 N--m
225 + 23 N--m
440 + 45 N--m
93 + 10 ft--lb
229 + 23 ft--lb
450 + 46 ft--lb
126 + 14 N--m
310 + 31 N--m
610 + 62 N--m
166 + 17 ft--lb
325 + 33 ft--lb
NOTE: Reduce torque values listed in the table above
by 25% for lubricated fasteners. Lubricated fasteners
are defined as threads coated with a lubricant such as
engine oil or thread sealant such as Loctite.
NOTE: The nominal torque values listed above are
based on 75% of the minimum proof load specified in
SAEJ1199. Thetoleranceisapproximately+10%ofthe
nominal torque value.
NOTE: Torque values may have to be reduced when
installing fasteners into threaded aluminum or brass.
The specific torque value should be determined based
on the fastener size, the aluminum or base material
strength, length of thread engagement, etc.
Pro Sweep
Page 2 -- 5
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Other Torque Specifications
SAE Grade 8 Steel Set Screws
Wheel Bolts and Lug Nuts
Thread Size Recommended Torque**
65 + 10 ft--lb 88 + 14 N--m
Recommended Torque
Thread Size
Square Head
140 + 20 in--lb
215 + 35 in--lb
35 + 10 ft--lb
75 + 15 ft--lb
Hex Socket
73 + 12 in--lb
145 + 20 in--lb
18 + 3 ft--lb
7/16 -- 20 UNF
Grade 5
1/4 -- 20 UNC
5/16 -- 18 UNC
3/8 -- 16 UNC
1/2 -- 13 UNC
1/2 -- 20 UNF
Grade 5
80 + 10 ft--lb 108 + 14 N--m
80 + 10 ft--lb 108 + 14 N--m
80 + 10 ft--lb 108 + 14 N--m
M12 X 1.25
Class 8.8
50 + 10 ft--lb
M12 X 1.5
Class 8.8
** For steel wheels and non--lubricated fasteners.
Thread Cutting Screws
(Zinc Plated Steel)
Thread Cutting Screws
(Zinc Plated Steel)
Type 1, Type 23 or Type F
Thread Threads per Inch
Size
Baseline Torque*
Thread Size
Baseline Torque*
20 + 5 in--lb
Type A Type B
No. 6 -- 32 UNC
No. 8 -- 32 UNC
No. 10 -- 24 UNC
1/4 -- 20 UNC
No. 6
No. 8
18
15
12
11
20
18
16
14
20 + 5 in--lb
30 + 5 in--lb
38 + 7 in--lb
85 + 15 in--lb
30 + 5 in--lb
38 + 7 in--lb
No. 10
No. 12
85 + 15 in--lb
110 + 20 in--lb
200 + 100 in--lb
5/16 -- 18 UNC
3/8 -- 16 UNC
*Holesize, materialstrength, materialthickness&finish
must be considered when determining specific torque
values. All torque values are based on non--lubricated
fasteners.
Conversion Factors
in--lb X 11.2985 = N--cm
N--cm X 0.08851 = in--lb
ft--lb X 1.3558 = N--m
N--m X 0.7376 = ft--lb
Page 2 -- 6
Product Records and Maintenance
Pro Sweep
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Chapter 3
Hydraulic System
Table of Contents
GENERAL INFORMATION . . . . . . . . . . . . . . . . . . . . . 2
Operator’s Manual . . . . . . . . . . . . . . . . . . . . . . . . . . 2
Hydraulic Hoses . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
Hydraulic Hose and Tube Installation . . . . . . . . . . 3
Hydraulic Fitting Installation . . . . . . . . . . . . . . . . . . . 4
Relieving Hydraulic System Pressure . . . . . . . . . . 6
Securing Pro Sweep to Tow Vehicle . . . . . . . . . . . 6
HYDRAULIC SCHEMATIC . . . . . . . . . . . . . . . . . . . . . 7
HYDRAULIC FLOW DIAGRAMS . . . . . . . . . . . . . . . . 8
Brush Circuit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Sweeper Raise/Hopper Dump Circuits . . . . . . . . 10
Sweeper Lower Circuits . . . . . . . . . . . . . . . . . . . . . 12
Sweeper Offset Circuits . . . . . . . . . . . . . . . . . . . . . 14
TROUBLESHOOTING . . . . . . . . . . . . . . . . . . . . . . . . 16
SERVICE AND REPAIRS . . . . . . . . . . . . . . . . . . . . . 22
General Precautions for Removing and Installing
Hydraulic System Components . . . . . . . . . . . . . 22
Check Hydraulic Lines and Hoses . . . . . . . . . . . . 23
Brush Motor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
Brush Motor Service . . . . . . . . . . . . . . . . . . . . . . . . 26
Hydraulic Control Manifold . . . . . . . . . . . . . . . . . . . 28
Hydraulic Control Manifold Service . . . . . . . . . . . 30
Lift Cylinder . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32
Lift Cylinder Service . . . . . . . . . . . . . . . . . . . . . . . . 34
Offset Cylinder . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36
Offset Cylinder Service . . . . . . . . . . . . . . . . . . . . . . 38
PARKER TORQLINKTM SERVICE PROCEDURE
Pro Sweep
Page 3 -- 1
Hydraulic System
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General Information
Operator’s Manual
The Operator’s Manual provides information regarding
the operation, general maintenance and maintenance
intervalsfor yourPro Sweepmachine. Referto thatpub-
lication for additional information when servicing the
machine.
Hydraulic Hoses
Hydraulic hoses are subject to extreme conditions such
as pressure differentials during operation and exposure
to weather, sun, chemicals, very warm storage condi-
tionsormishandlingduringoperation andmaintenance.
These conditions can cause hose damage and deterio-
ration. Some hoses are more susceptible to these
conditions than others. Inspect all machine hydraulic
hoses frequently for signs of deterioration or damage:
WARNING
Before disconnecting or performing any work on
hydraulic system, relieve all pressure in system
(see Relieving Hydraulic System Pressure in this
section).
Hard, cracked, cut, abraded, charred, leaking or
otherwise damaged hose.
Keepbodyandhandsawayfrompinholeleaksor
nozzles that eject hydraulic fluid under high
pressure. Use paper or cardboard, not hands, to
search for leaks. Hydraulic fluid escaping under
pressure can have sufficient force to penetrate
the skin and cause serious injury. If fluid is in-
jected into the skin, it must be surgically re-
moved within a few hours by a doctor familiar
with thistype ofinjury. Gangrenemay resultfrom
such an injury.
Kinked, crushed, flattened or twisted hose.
Blistered, soft, degraded or loose hose cover.
Cracked, damaged or badly corroded hose fittings.
When replacing a hydraulic hose, be sure that the hose
is straight (not twisted) before tightening the fittings.
This can be done by observing the imprint (layline) on
the hose. Use two wrenches when tightening a hose;
hold the hose straight with one wrench and tighten the
hose swivel nut onto the fitting with the second wrench
(see Hydraulic Hose and Tube Installation in this sec-
tion). If the hose has an elbow at one end, tighten the
swivel nut on that end before tightening the nut on the
straight end of the hose.
For additional hydraulic hose information, refer to Toro
Service Training Book, Hydraulic Hose Servicing (Part
Number 94813SL).
Hydraulic System
Page 3 -- 2
Pro Sweep
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Hydraulic Hose and Tube Installation (O--Ring Face Seal Fitting)
1. Make sure threads and sealing surfaces of the hose/
tube and the fitting are free of burrs, nicks, scratches or
any foreign material.
C. Use a second wrench to tighten the nutto the cor-
rect Flats From Wrench Resistance (F.F.W.R.). The
markingsonthenutandfittingbodywillverifythatthe
connection has been properly tightened.
2. As a preventative measure against leakage, it is rec-
ommended that the face seal O--ring be replaced any
time the connection is opened. Make sure the O--ring is
installedandproperlyseatedinthefittinggroove.Lightly
lubricate the O--ring with clean hydraulic oil.
Size
F.F.W.R.
4 (1/4 in. nominal hose or tubing)
6 (3/8 in.)
8 (1/2 in.)
10 (5/8 in.)
12 (3/4 in.)
1/2 to 3/4
1/2 to 3/4
1/2 to 3/4
1/2 to 3/4
1/3 to 1/2
1/3 to 1/2
3. Place the hose/tube against the fitting body so that
theflatfaceofthehose/tubesleevefullycontactstheO--
ring in the fitting.
16 (1 in.)
Swivel Nut
Fitting Body
O--ring
4. Thread the swivel nut onto the fitting by hand. While
holding the hose/tube with a wrench, use a torque
wrench to tighten the swivel nut to the recommended
installation torque shown in Figure 3. This tightening
process will require the use of an offset wrench (e.g.
crowfoot wrench). Use of an offset wrench will affect
torque wrench calibration due to the effective length
change of the torque wrench. Tightening torque when
usingatorquewrenchwithanoffsetwrenchwillbelower
than the listed installation torque (see Using a Torque
Wrench with an Offset Wrench in the Torque Specifica-
tions section of Chapter 2 -- Product Records and Main-
tenance).
Tube or Hose
Figure 1
5. If a torque wrench is not available or if space at the
swivel nut prevents use of a torque wrench, an alternate
method of assembly is the Flats From Wrench Resist-
ance (F.F.W.R.) method (Fig. 2).
Mark Nut
Final
Position
and Fitting
Body
A. Using a wrench, tighten the swivel nutonto thefit-
tinguntillightwrenchresistanceis reached(approxi-
mately 30 in--lb).
Initial
Position
Extend Line
AT WRENCH RESISTANCE
AFTER TIGHTENING
B. Mark the swivel nut and fitting body. Hold the
hose/tube with a wrench to prevent it from turning.
Figure 2
Fitting Dash Size
Hose/Tube Side Thread Size
9/16 -- 18
Installation Torque
4
6
18 to 22 ft--lb (25 to 29 N--m)
27 to 33 ft--lb (37 to 44 N--m)
37 to 47 ft--lb (51 to 63 N--m)
60 to 74 ft--lb (82 to 100 N--m)
85 to 105 ft--lb (116 to 142 N--m)
110 to 136 ft--lb (150 to 184 N--m)
140 to 172 ft--lb (190 to 233 N--m)
11/16 -- 16
8
13/16 -- 16
10
12
16
20
1 -- 14
1 3/16 -- 12
1 7/16 -- 12
1 11/16 -- 12
Figure 3
Page 3 -- 3
Pro Sweep
Hydraulic System
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Hydraulic Fitting Installation (SAE Straight Thread O--Ring Fitting into Component Port)
Non--Adjustable Fitting (Fig. 4)
5. If a torque wrench is not available, or if space at the
portpreventsuseofatorque wrench, an alternatemeth-
od of assembly is the Flats From Finger Tight (F.F.F.T.)
method.
1. Make sure all threads and sealing surfaces of fitting
and component port are free of burrs, nicks, scratches
or any foreign material.
A. Install the fitting into the port and tighten it down
full length until finger tight.
2. As a preventative measure against leakage, it is rec-
ommended that the O--ring be replaced any time the
connection is opened.
B. If port material is steel, tighten the fitting to the
listed F.F.F.T. If port material is aluminum, tighten fit-
ting to 60% of listed F.F.F.T.
3. Lightly lubricate the O--ring with clean hydraulic oil.
Fittingthreadsshouldbecleanwithnolubricantapplied.
Size
F.F.F.T.
IMPORTANT: Before installing fitting into port, de-
termine port material. If fitting is to be installed into
an aluminum port, installation torque is reduced.
4 (1/4 in. nominal hose or tubing)
6 (3/8 in.)
8 (1/2 in.)
10 (5/8 in.)
12 (3/4 in.)
1.00 + 0.25
1.50 + 0.25
1.50 + 0.25
1.50 + 0.25
1.50 + 0.25
1.50 + 0.25
4. Install the fitting into the port. Then, use a torque
wrench and socket to tighten the fitting to the recom-
mended installation torque shown in Figure 5.
16 (1 in.)
NOTE: Use of an offset wrench (e.g. crowfoot wrench)
will affect torque wrench calibration due to the effective
length change of the torque wrench. Tightening torque
when using a torque wrench with an offset wrench will
be less than the recommended installation torque. See
Using a Torque Wrench with an Offset Wrench in the
Torque Specifications section of Chapter 2 -- Product
Records and Maintenance to determine necessary con-
version information.
Fitting
O--ring
Figure 4
Fitting
Dash Size
Fitting Port Side
Thread Size
Installation Torque Into
Steel Port
Installation Torque Into
Aluminum Port
4
5
7/16 -- 20
1/2 -- 20
15 to 19 ft--lb (21 to 25 N--m)
18 to 22 ft--lb (25 to 29 N--m)
34 to 42 ft--lb (47 to 56 N--m)
58 to 72 ft--lb (79 to 97 N--m)
99 to 121 ft--lb (135 to 164 N--m)
134 to 164 ft--lb (182 to 222 N--m)
160 to 196 ft--lb (217 to 265 N--m)
202 to 248 ft--lb (274 to 336 N--m)
9 to 11 ft--lb (13 to 15 N--m)
11 to 15 ft--lb (15 to 20 N--m)
20 to 26 ft--lb (28 to 35 N--m)
35 to 43 ft--lb (48 to 58 N--m)
60 to 74 ft--lb (82 to 100 N--m)
81 to 99 ft--lb (110 to 134 N--m)
96 to 118 ft--lb (131 to 160 N--m)
121 to 149 ft--lb (165 to 202 N--m)
149 to 183 ft--lb (202 to 248 N--m)
6
9/16 -- 18
3/4 -- 16
8
10
12
14
16
20
7/8 -- 14
1 1/16 -- 12
1 3/16 -- 12
1 5/16 -- 12
1 5/8 -- 12
247 to 303 ft--lb (335 to 410 N--m)
Figure 5
Hydraulic System
Page 3 -- 4
Pro Sweep
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Adjustable Fitting (Fig. 6)
1. Make sure all threads and sealing surfaces of fitting
and component port are free of burrs, nicks, scratches
or any foreign material.
2. As a preventative measure against leakage, it is rec-
ommended that the O--ring be replaced any time the
connection is opened.
Lock Nut
3. Lightly lubricate the O--ring with clean hydraulic oil.
Fittingthreadsshouldbecleanwithnolubricantapplied.
Back--up Washer
4. Turn back the lock nut as far as possible. Make sure
the back up washer is not loose and is pushed up as far
as possible (Step 1 in Figure 7).
O--ring
Figure 6
IMPORTANT: Before installing fitting into port, de-
termine port material. If fitting is to be installed into
an aluminum port, installation torque is reduced.
5. Install the fitting into the port and tighten finger tight
until the washer contacts the face of the port (Step 2 in
Figure 7). Make sure that the fitting does not bottom in
the port during installation.
Step 1
Step 2
Step 3
Step 4
6. To put the fitting in the desired position, unscrew it by
the required amount to align fitting with incoming hose
or tube, but no more than one full turn (Step 3 in Figure
7).
7. Hold the fitting in the desired position with a wrench
and use a torque wrench to tighten the lock nut to the
recommended installation torque shown in Figure 5.
This tightening process will require the use of an offset
wrench (e.g. crowfoot wrench). Use of an offset wrench
will affect torque wrench calibration due to the effective
length change of the torque wrench. Tightening torque
when using a torque wrench with an offset wrench will
be lower than the listed installation torque (see Using a
Torque Wrench with an Offset Wrench in the Torque
Specifications section of Chapter 2 -- Product Records
and Maintenance).
Figure 7
8. If a torque wrench is not available, or if space at the
portpreventsuseofatorque wrench, an alternatemeth-
od of assembly is the Flats From Finger Tight (F.F.F.T.)
method. Hold the fitting in the desired position with a
wrench and, if port material is steel, tighten the lock nut
with a second wrench to the listed F.F.F.T (Step 4 in Fig-
ure 7). If port material is aluminum, tighten fitting to 60%
of listed F.F.F.T.
Size
F.F.F.T.
4 (1/4 in. nominal hose or tubing)
6 (3/8 in.)
8 (1/2 in.)
10 (5/8 in.)
12 (3/4 in.)
1.00 + 0.25
1.50 + 0.25
1.50 + 0.25
1.50 + 0.25
1.50 + 0.25
1.50 + 0.25
16 (1 in.)
Pro Sweep
Page 3 -- 5
Hydraulic System
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Relieving Hydraulic System Pressure
Make sure that the sweeper has electrical power and
that sweeper control module is energized (control mod-
ule Time Out and Power LED’s are both illuminated).
Withthetowvehicleenginenotrunning,pressallremote
transmitter buttons to energize the solenoids on the hy-
draulic control manifold. After all functions have been
energized, makesuretowvehiclekeyswitchis OFFand
key is removed from ignition switch.
CAUTION
Before disconnecting any hydraulic compo-
nents, operate all sweeper hydraulic controls to
relieve system pressure and avoid injury from
pressurized hydraulic oil.
Before disconnecting or performing any work on the Pro
Sweep hydraulic system, all pressure in the hydraulic
system must be relieved. Position sweeper on a level
surfacewithdumphopperemptyandfullylowered. Turn
tow vehicle key switch to OFF and allow engine to stop.
Securing Pro Sweep to Tow Vehicle
While servicing the Pro Sweep, make sure that the hitch
pin is properly positioned in tow vehicle hitch and
sweeper tongue (Fig. 8). Hitch pin should be secured
with hairpin clip.
1
2
Figure 8
1. Hitch pin
2. Hairpin clip
Hydraulic System
Page 3 -- 6
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Hydraulic Schematic
LIFT
CYLINDER
OFFSET
CYLINDER
CONTROL
MANIFOLD
Pro Sweep
Hydraulic Schematic
All solenoids are shown as
de--energized
Pro Sweep
Page 3 -- 7
Hydraulic System
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Hydraulic Flow Diagrams
LIFT
CYLINDER
OFFSET
CYLINDER
CONTROL
MANIFOLD
(ENERGIZED)
(ROTATING)
Brush Circuit
Brush Rotating Shown
Working Pressure
Return
Flow
Hydraulic System
Page 3 -- 8
Pro Sweep
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Brush Circuit
NOTE: Hydraulic flow and relief pressure for the Pro
Sweep are determined by the tow vehicle.
LIFT
CYLINDER
When the tow vehicle hydraulics are engaged for the
sweeper, hydraulic flow from the tow vehicle goes to the
sweeper control manifold (port P) through the hydraulic
inlet hose. If the sweeper brush motor is not engaged
(sweeper is raised above the transport height) and the
lift and offset cylinders are stationary, hydraulic flow
from the tow vehicle is directed by the control manifold
pressure compensator valve EC and the de--energized
solenoid valve SRV to return to the tow vehicle through
control manifold port T and the return to tank hose (Fig.
9).
OFFSET
CYLINDER
CONTROL
MANIFOLD
Brush Engage
When the sweeper is below the transport height, sole-
noid valve SRV in the hydraulic control manifold is ener-
gized. In this sweeper position, energized SRV shifts to
preventhydraulic flow return to the tow vehicle when the
tow vehicle hydraulics are engaged. Hydraulic flow from
the tow vehicle is then directed out of control manifold
port M1 to the brush motor. This flow causes rotation of
the sweeper brush. Oil return from the brush motor is
routed to control manifold port M2, out control manifold
port T and returns to the tow vehicle.
(DE--ENERGIZED)
During sweeper brush operation, solenoid valve SRV
also functions as a circuit relief valve. If brush circuit
pressure reaches 2500 PSI (172 bar), SRV will shift to
reduce circuit pressure.
Brush Disengage
The brush can be disengaged either by shutting off hy-
draulicflowfromthetow vehicleor byraising thesweep-
er to the transport position.
Figure 9
Pro Sweep
Page 3 -- 9
Hydraulic System
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LIFT
CYLINDER
(EXTENDING)
OFFSET
CYLINDER
CONTROL
MANIFOLD
(DE--ENERGIZED)
(ENERGIZED)
(DE--
ENERGIZED)
Sweeper Raise/Hopper
Dump Circuits
Working Pressure
Return
Flow
Hydraulic System
Page 3 -- 10
Pro Sweep
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Sweeper Raise/Hopper Dump Circuits
NOTE: Hydraulic flow and relief pressure to the Pro
Sweep are determined by the tow vehicle.
LIFT
CYLINDER
When the tow vehicle hydraulics are engaged for the
sweeper, hydraulic flow from the tow vehicle goes to the
sweeper control manifold (port P) through the hydraulic
inlet hose. If the sweeper brush motor is not engaged
(sweeper is raised above the transport height) and the
lift and offset cylinders are stationary, hydraulic flow
from the tow vehicle is directed by the control manifold
pressure compensator valve EC and the de--energized
solenoid valve SRV to return to the tow vehicle through
control manifold port T and the return to tank hose (Fig.
10).
OFFSET
CYLINDER
CONTROL
MANIFOLD
Sweeper Raise
When the tow vehicle hydraulics are engaged and the
remote transmitter sweeper up button is pressed and
held, solenoid valve SV3 in the hydraulic control man-
ifold is energized. The valve shift of SV3 directs oil flow
past the check valve in de--energized valve SV2, out of
control manifold port C and to the lift cylinder. Hydraulic
pressure against the lift cylinder piston extends the cyl-
inder to raise the hopper. The check valve fitting at-
tached to the lift cylinder allows oil flow to bypass the
orifice in the fitting for proper lift cylinder extension.
(DE--ENERGIZED)
As the hopper is being raised, control manifold relief
valve RV functions as a circuit relief valve. If circuit pres-
sure reaches 2000 PSI (138 bar) while the sweeper is
being raised, RV will shift to reduce circuit pressure.
When the transmitter sweeper up button is released or
when the sweeper gets to transport (sweeper not offset)
or turn around (sweeper is offset) height, solenoid valve
SV3 in the hydraulic manifold is de--energized, stopping
the raise function. The check valve in de--energized
valve SV2 prevents oil flow from the lift cylinder so the
sweeper remains in the raised position.
Figure 10
Hopper Dump
If the sweeper is in the transport height position (sweep-
er not offset), the remote transmitter dump sequence is
entered and then the hopper dump button is pressed
andheld, thesweeperhopperwillfullyraisetoemptythe
hopper. Control manifold solenoid valve SV3 is ener-
gized to allow oil flow to the lift cylinder. De--energized
valveSV2andreliefvalveRVfunctionthesametodump
the hopper as during the sweeper raise function.
Pro Sweep
Page 3 -- 11
Hydraulic System
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LIFT
CYLINDER
(RETRACTING)
OFFSET
CYLINDER
CONTROL
MANIFOLD
(ENERGIZED)
(DE--
ENERGIZED)
(DE--
ENERGIZED)
Sweeper Lower Circuits
Working Pressure
Return
Flow
Hydraulic System
Page 3 -- 12
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Sweeper Lower Circuits
NOTE: Hydraulic flow and relief pressure to the Pro
Sweep are determined by the tow vehicle.
LIFT
CYLINDER
When the tow vehicle hydraulics are engaged for the
sweeper, hydraulic flow from the tow vehicle goes to the
sweeper control manifold (port P) through the hydraulic
inlet hose. If the sweeper brush motor is not engaged
(sweeper is raised above the transport height) and the
lift and offset cylinders are stationary, hydraulic flow
from the tow vehicle is directed by the control manifold
pressure compensator valve EC and the de--energized
solenoid valve SRV to return to the tow vehicle through
control manifold port T and the return to tank hose (Fig.
11).
OFFSET
CYLINDER
CONTROL
MANIFOLD
Sweeper Lower
When the remote transmitter sweeper down button is
pressed, solenoid valve SV2 in the hydraulic control
manifold is energized. The valve shift of SV2 allows a
path for oil flow from the lift cylinder. The weight of the
dump hopper and sweeper frame cause the lift cylinder
to retract, allowing the sweeper to lower to the ground.
The orifice in the lift cylinder check valve fitting restricts
oil flow from the cylinder to control lift cylinder retraction
speed.
(DE--ENERGIZED)
While lowering, if the remote transmitter sweeper up or
stop button are pressed, solenoid valve SV2 will de--en-
ergize and oil flow from the lift cylinder will cease. The
sweeper will stop lowering and remain in position.
As the sweeper is being lowered, relief valve RV func-
tions as a circuit relief valve. If circuit pressure reaches
2000 PSI (138 bar), RV will shift to reduce circuit pres-
sure.
Figure 11
Sweeper Float
After the sweeper has been fully lowered to the ground,
solenoid valve SV2 will continue to be energized. The
shifted valve will allow lift cylinder and sweeper move-
ment so the sweeper head can follow ground surface
contours.
Pro Sweep
Page 3 -- 13
Hydraulic System
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LIFT
CYLINDER
OFFSET
CYLINDER
(EXTENDING)
CONTROL
MANIFOLD
(SHIFTED)
(LOWER COIL
ENERGIZED
FOR RH OFFSET)
Sweeper Offset Circuits
(Offset to Right Shown)
Working Pressure
Return
Flow
Hydraulic System
Page 3 -- 14
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Sweeper Offset Circuits
NOTE: Hydraulic flow and relief pressure to the Pro
Sweep are determined by the tow vehicle.
Oil flow through shifted SV1 is directed through the
check valve in counterbalance valve CB1, out of control
manifold port L and to the rod end of the offset cylinder.
As circuit pressure increases, a manifold sensing line
shifts counterbalance cartridge CB2 to allow a return
path for oil from the barrel end of the offset cylinder. The
offset cylinder will retract to cause the sweeper to offset
to the left. Oil from the barrel end of the offset cylinder
returns to the tow vehicle through shifted SV1, control
manifold port T and the return to tank hose.
When the tow vehicle hydraulics are engaged for the
sweeper, hydraulic flow from the tow vehicle goes to the
sweeper control manifold (port P) through the hydraulic
inlet hose. If the sweeper brush motor is not engaged
(sweeper is raised above the transport height) and the
lift and offset cylinders are stationary, hydraulic flow
from the tow vehicle is directed by the control manifold
pressure compensator valve EC and the de--energized
solenoid valve SRV to return to the tow vehicle through
control manifold port T and the return to tank hose (Fig.
12).
Control manifold orifice OR1 (0.050) and relief valve RV
function the same in offset left as during offset right.
When the transmitter offset left button is released, the
upper coil for solenoid valve SV1 will de--energize and
oil flow to the offset cylinder will cease. The sweeper will
remain in position.
Offset Right
When the remote transmitter offset right button is
pressed and held, the lower coil for solenoid valve SV1
in the hydraulic control manifold will be energized. If the
tow vehicle hydraulics are engaged for the sweeper, the
shifted SV1 allows a path for oil flow to the barrel end of
the offset cylinder.
LIFT
CYLINDER
OFFSET
CYLINDER
Oil flow through shifted SV1 is directed through the
check valve in counterbalance valve CB2, out of control
manifold port R and to the barrel end of the offset cylin-
der. As circuit pressure increases, a manifold sensing
line shifts counterbalance cartridge CB1 to allow a re-
turn path for oil from the rod end of the offset cylinder.
The offset cylinder will extend to cause the sweeper to
offset to the right. Oil from the rod end of the offset cylin-
der returns to the tow vehicle through shifted SV1, con-
trol manifold port T and the return to tank hose.
CONTROL
MANIFOLD
Orifice OR1 (0.050) in the control manifold exists to con-
trol the extending speed of the offset cylinder.
As the sweeper is being offset, relief valve RV functions
as a circuit relief valve. If circuit pressure reaches 2000
PSI (138 bar), RV will shift to reduce circuit pressure.
(DE--ENERGIZED)
When the transmitter offset right button is released, the
lower coil for solenoid valve SV1 will de--energize and
oil flow to the offset cylinder will cease. The sweeper will
remain in position.
Offset Left
Whentheremotetransmitteroffsetleftbuttonispressed
and held, the upper coil for solenoid valve SV1 in the hy-
draulic control manifold will be energized. If the tow ve-
hicle hydraulics are engaged for the sweeper, the
shifted SV1 allows a path for oil flow to the rod end of the
offset cylinder.
Figure 12
Pro Sweep
Page 3 -- 15
Hydraulic System
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Troubleshooting
The cause of an improperly functioning hydraulic sys-
tem is best diagnosed with the use of proper testing
equipment and a thorough understanding of the com-
plete hydraulic system.
The successful operation of the Pro Sweep depends on
the hydraulic system of the tow vehicle. When trouble-
shooting a sweeper hydraulic problem, make sure that
the tow vehicle hydraulic system is evaluated as well.
A hydraulic system with an excessive increase in heat
or noise has apotential forfailure. Shouldeither ofthese
conditions be noticed, immediately stop the machine,
turn off the engine of the tow vehicle, locate the cause
of the trouble and correct it before allowing the machine
to be used again. Continued use of an improperly func-
tioninghydraulicsystemcouldleadtoextensivehydrau-
lic component damage.
NOTE: When troubleshooting a hydraulic problem on
the Pro Sweep, inspect tow vehicle hydraulic system if
sweeper brush motor, offset cylinder and lift cylinder are
all malfunctioning. If one sweeper hydraulic circuit ap-
pears to be malfunctioning (e.g. the brush circuit and lift
cylinder are working but the offset cylinder will not func-
tion), check the non--functioning circuit and its compo-
nents.
The charts that follow contain information to assist in
troubleshooting. There may possibly be more than one
cause for a machine malfunction.
Problem
Possible Cause
Hydraulic fitting(s) or hose(s) are loose or damaged.
Hydraulic oil leaks.
O--ring(s) or seal(s) are missing or damaged.
Hydraulic oil level in tow vehicle reservoir is low.
Foaming hydraulic fluid.
Hydraulic system has wrong kind of oil.
Hydraulic system on tow vehicle is malfunctioning.
Hydraulic oil level in tow vehicle reservoir is low.
Hydraulic system operates hot.
Excessive dirt and debris on Pro Sweep hydraulic components.
Hydraulic oil is contaminated or too light.
Brush motor is worn or damaged.
Hydraulic system on tow vehicle is malfunctioning.
Hydraulic System
Page 3 -- 16
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Problem
Possible Cause
Brush motor will not turn.
Control module has gone to time--out due to inactivity of remote
transmitter.
Sweeper is raised above transport height.
Hydraulic hose(s) to tow vehicle are not connected (lift cylinder and
offset cylinder affected as well).
Tow vehicle hydraulics are not engaged to Pro Sweep (lift and off-
set cylinders affected as well).
An electrical problem exists that prevents SRV solenoid coil on
control manifold from being energized (see Troubleshooting in
Chapter 4 -- Electrical System).
Control manifold SRV solenoid cartridge is faulty.
Control manifold EC cartridge is faulty.
Hydraulic brush motor is faulty.
An electrical problem exists that prevents operation of control mod-
ule or remote transmitter.
Pro Sweep
Page 3 -- 17
Hydraulic System
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Problem
Possible Cause
Sweeper will not lift or lifts slowly.
Control module has gone to time--out due to inactivity of remote
transmitter.
Hydraulic hose(s) to tow vehicle are not connected (brush motor
and offset cylinder affected as well).
Tow vehicle hydraulics are not engaged to Pro Sweep (brush motor
and offset cylinder affected as well).
Hydraulic oil level in tow vehicle reservoir is low.
Lift cylinder is binding.
Sweeper frame components are binding.
Check valve fitting on lift cylinder is faulty.
An electrical problem exists that prevents control manifold solenoid
coil SV3 from being energized (see Troubleshooting in Chapter 4 --
Electrical System).
Control manifold solenoid cartridge SV3 is faulty.
Control manifold solenoid cartridge SV2 is faulty.
Control manifold relief valve RV is leaking or faulty.
Control manifold cartridge EC is faulty.
Hydraulic system on tow vehicle is malfunctioning (brush motor and
offset cylinder affected as well).
An electrical problem exists that prevents operation of control mod-
ule or remote transmitter (see Troubleshooting in Chapter 4 -- Elec-
trical System).
Lift cylinder is damaged.
Hydraulic System
Page 3 -- 18
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Problem
Possible Cause
Sweep hopper will not dump.
Remote transmitter dump sequence not followed.
Control module has gone to time--out due to inactivity of remote
transmitter.
Sweeper is in the offset position.
Sweeper not in transport height when remote transmitter dump se-
quence was entered.
Hydraulic hose(s) to tow vehicle are not connected (brush motor
and offset cylinder affected as well).
Tow vehicle hydraulics are not engaged to Pro Sweep (brush motor
and offset cylinder affected as well).
Hydraulic oil level in tow vehicle reservoir is low.
Lift cylinder is binding.
Sweeper frame components are binding.
Check valve fitting on lift cylinder is faulty.
An electrical problem exists that prevents control manifold solenoid
coil SV3 from being energized (see Troubleshooting in Chapter 4 --
Electrical System).
Control manifold solenoid cartridge SV3 is faulty.
Control manifold solenoid cartridge SV2 is faulty.
Control manifold relief valve RV is leaking or faulty.
Control manifold cartridge EC is faulty.
Hydraulic system on tow vehicle is malfunctioning (brush motor and
offset cylinder affected as well).
An electrical problem exists that prevents operation of control mod-
ule or remote transmitter (see Troubleshooting in Chapter 4 -- Elec-
trical System).
Lift cylinder is damaged.
Sweeper raises, but will not stay up.
Control manifold SV2 cartridge is leaking or faulty.
NOTE: Control manifold cartridge
cannot provide an absolutely perfect
seal. The dump hopper may eventu-
ally lower if left in the raised position.
Use lift cylinder safety support when
dump hopper is raised.
Pro Sweep
Page 3 -- 19
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Problem
Possible Cause
Sweeper will not move to or from the
offset position.
Control module has gone to time--out due to inactivity of remote
transmitter.
Hydraulic hose(s) to tow vehicle are not connected (brush motor
and lift cylinder affected as well).
Tow vehicle hydraulics are not engaged to Pro Sweep (brush motor
and lift cylinder affected as well).
Sweeper is raised above transport height.
Offset cylinder is binding.
Sweeper frame components are binding.
An electrical problem exists that prevents coil on control manifold
solenoid valve SV1 from being energized (see Troubleshooting in
Chapter 4 -- Electrical System).
Control manifold solenoid cartridge SV1 is faulty.
Control manifold cartridge CB1 and/or CB2 are faulty.
Offset cylinder is damaged.
An electrical problem exists that prevents operation of control mod-
ule or remote transmitter (see Troubleshooting in Chapter 4 -- Elec-
trical System).
Hydraulic System
Page 3 -- 20
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Pro Sweep
Page 3 -- 21
Hydraulic System
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Service and Repairs
General Precautions for Removing and Installing Hydraulic System Components
Before Repair or Replacement of Components
After Repair or Replacement of Components
1. Before removing any parts from the hydraulic sys-
tem, empty sweeper hopper and position sweeper on a
level surface. Chock sweeper wheels to preventsweep-
er from moving. If sweeper is attached to tow vehicle,
apply tow vehicle parking brake, stop engine and re-
move key from the ignition switch.
1. If component failure was severe or if hydraulic sys-
tem is contaminated, drain entire hydraulic system.
Drain and flush all hoses and components. Also, drain
and refill tow vehicle hydraulic system reservoir and
change oil filter.
2. Lubricate O--rings and seals with clean hydraulic oil
before installing hydraulic components.
2. Clean machine before disconnecting, removing or
disassembling any hydraulic components. Make sure
hydraulic components, hoses, connections and fittings
are thoroughly cleaned. Always keep in mind the need
for cleanliness when working on hydraulic equipment.
3. Make sure caps or plugs are removed from the hy-
draulic lines, hydraulic fittings and components before
reconnecting.
4. Use proper tightening methods when installing hy-
draulic hoses and fittings (see Hydraulic Fitting Installa-
tion in the General Information section of this chapter).
CAUTION
5. After repairs are completed but before operating the
sweeper, check oil level in the hydraulic reservoir of the
tow vehicle and add correct oil if necessary.
Before disconnecting any hydraulic compo-
nents, operate all sweeper hydraulic controls to
relieve system pressure and avoid injury from
pressurized hydraulic oil. See Relieving Hydrau-
lic System Pressure in the General Information
section of this chapter.
6. After disconnecting or replacing any hydraulic com-
ponents, operate machine functions slowly until air is
out of system.
3. Putcapsorplugsonanyhydrauliclines, hydraulicfit-
tings or hydraulic components left open or exposed to
prevent hydraulic system contamination.
7. Check for hydraulic oil leaks. Shut off tow vehicle en-
gine and correct leaks if any are discovered. Check oil
level in hydraulic reservoir and add correct oil if neces-
sary.
4. Putlabels on disconnected hydraulic hoses for prop-
er installation after repairs are completed.
5. Note the position of hydraulic fittings (especially el-
bow fittings) on hydraulic components before removal.
Markpartsifnecessarytomakesuretheywillbealigned
properly when reinstalling hydraulic hoses.
Hydraulic System
Page 3 -- 22
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Check Hydraulic Lines and Hoses
Before using sweeper, check hydraulic hoses for leaks,
kinked lines, loose mounting supports, wear, loose fit-
tings or any other deterioration. Make all necessary re-
pairs before operating sweeper.
WARNING
Keep body and hands away from pin hole leaks
or nozzles that eject hydraulic fluid under high
pressure. Use paper or cardboard, not hands, to
search for leaks. Hydraulic fluid escaping under
pressure can have sufficient force to penetrate
the skin and cause serious injury. If fluid is in-
jected into the skin, it must be surgically re-
moved within a few hours by a doctor familiar
withthistypeofinjury. Gangrenemayresultfrom
such an injury.
Pro Sweep
Page 3 -- 23
Hydraulic System
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Brush Motor
94 to 116 ft--lb
(128 to 157 N--m)
1
4
3
2
5
6
9
10
11
12
13
8
14
7
17
20
16
15
17
RIGHT
19
FRONT
18
Figure 13
1. Brush housing
8. Coupling assembly
9. Hydraulic hose (2 used)
10. O--ring (2 used)
11. Hydraulic fitting (2 used)
12. O--ring (2 used)
13. Cap screw (2 used)
14. Hydraulic brush motor
15. Flat washer (6 used)
16. Lock nut (6 used)
17. Bearing flange (4 used)
18. Square key
19. Brush assembly
20. Bearing assembly
2. Coupling cover (2 used)
3. Lock washer (8 used)
4. Cap screw (8 used)
5. Lock nut (2 used)
6. Flat washer (2 used)
7. Carriage bolt (6 used)
Removal (Fig. 13)
CAUTION
1. Position sweeper on a level surface with dump hop-
per empty and fully lowered. Chock sweeper wheels to
prevent sweeper from moving. If sweeper is attached to
tow vehicle, apply tow vehicle parking brake, stop en-
gine and remove key from the ignition switch.
Before disconnecting any hydraulic compo-
nents, operate all sweeper hydraulic controls to
relieve system pressure and avoid injury from
pressurized hydraulic oil. See Relieving Hydrau-
lic System Pressure in the General Information
section of this chapter.
Hydraulic System
Page 3 -- 24
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2. Relieve sweeper hydraulic system pressure.
6. Remove all caps or plugs that were placed on hy-
draulic lines and fittings during disassembly.
3. Clean brush motor and hydraulic connections. Label
hydraulic lines for assembly purposes.
7. Using labels placed during motor removal, correctly
install hydraulic hoses to hydraulic fittings on brush mo-
tor. Tighten connections (see Hydraulic Hose and Tube
Installation in the General Information section of this
chapter).
4. Disconnecthydraulichosesfromhydraulicfittingson
brush motor. Allow hydraulic oil to drain from lines into
asuitablecontainer.Putcapsorplugsonopenhydraulic
lines and fittings to prevent contamination.
8. Install upper coupling cover to brush housing.
5. Remove upper coupling cover from brush housing.
6. Support brush motor. Remove two (2) cap screws
(item13), flatwashers(item6)andlocknuts(item5)that
secure motor to frame. Pull brush motor (with coupling
jaw attached) from the machine.
Antiseize
Antiseize
Lubricant
Lubricant
4
3
2
IMPORTANT: To prevent damage to hydraulic mo-
tor,DONOThitcouplingjawormotorwithahammer
during coupling jaw removal or installation.
1
5
6
7. Loosen set screw that secures coupling jaw to brush
motor shaft. Use puller to remove coupling jaw from mo-
tor shaft. Locate and retrieve woodruff key from motor
shaft.
3
7
61 to 85 in--lb
(6.9 to 9.6 N--m)
Loctite #242
8. If required, remove hydraulic fittings and O--rings
from the wheel motor. Discard O--rings.
Figure 14
1. Hydraulic brush motor
2. Woodruff key
3. Coupling jaw
5. Brush assembly
6. Square key
7. Set screw
Installation (Fig. 13)
1. If removed, install hydraulic fittings with new O--rings
intothebrush motorports (seeHydraulic FittingInstalla-
tion in the General Information section of this chapter).
4. Coupling spider
2
3
4
2. If coupling jaw was removed from motor, apply anti-
seize lubricant to motor shaft. Position woodruff key into
shaft keyway and slide coupling jaw onto shaft. Make
sure that coupling spider is positioned into coupling jaw
on brush shaft.
3. Align coupling jaw on motor shaft with coupling spi-
der. Position and support brush motor to the frame.
4. Align motor shaft with brush shaft. Secure brush mo-
tor to frame with two (2) cap screws (item 13), flat wash-
ers (item 6) and lock nuts (item 5). Torque lock nuts from
94 to 116 ft--lb (128 to 157 N--m).
1
5
0.830” to 0.930”
(21.1 to 23.6 mm)
Figure 15
1. Brush shaft
2. Brush coupling jaw
3. Coupling spider
4. Motor coupling jaw
5. Motor shaft
5. Position coupling jaw on motor shaft to allow a gap
between coupler jaw valleys from 0.830” to 0.930” (21.1
to 23.6 mm) (Fig. 15). Apply Loctite #242 (or equivalent)
to threads of coupling set screw. Secure coupling jaw to
motor shaft by torquing set screw from 61 to 85 in--lb
(6.9 to 9.6 N--m).
Pro Sweep
Page 3 -- 25
Hydraulic System
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Brush Motor Service
9
11
3
10
12
13
14
15
16
17
18
19
20
1
2
3
4
22 to 26 ft--lb
(30 to 35 N--m)
5
3
6
3
7
3
8
Figure 16
1. Cap screw (5 used)
2. End cover
3. Ring seal
4. Commutator seal
5. Commutator and ring assembly
6. Manifold
7. Stator
8. Wear plate
9. Drive link
10. Coupling shaft
11. Woodruff key
12. Bushing
13. Thrust bearing
14. Thrust washer
15. Inner seal
16. Backup washer
17. O--ring
18. Housing
19. Bearing
20. Seal
NOTE: For service of the hydraulic brush motor, see
the Parker TorqlinkTM Service Procedure at the end of
this chapter.
Hydraulic System
Page 3 -- 26
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Pro Sweep
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Hydraulic System
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Hydraulic Control Manifold
1
6
8
7
9
4
5
3
9
11
7
3
2
10
RIGHT
FRONT
Figure 17
1. Main frame
5. Lock nut (2 used)
6. Hydraulic hose
7. O--ring
9. O--ring
10. Hydraulic hose (2 used)
11. Hydraulic hose (2 used)
2. Cap screw (2 used)
3. Flat washer (4 used)
4. Hydraulic control manifold
8. Hydraulic hose (2 used)
Hydraulic System
Page 3 -- 28
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Removal (Fig. 17)
Installation (Fig. 17)
1. Position sweeper on a level surface with dump hop-
per empty and fully lowered. Chock sweeper wheels to
prevent sweeper from moving. If sweeper is attached to
tow vehicle, apply tow vehicle parking brake, stop en-
gine and remove key from the ignition switch.
1. Lightly oil new O--rings for all removed hydraulic fit-
tings. Install hydraulic fittings to control manifold (see
Hydraulic Fitting Installation in the General Information
section of this chapter).
2. Position hydraulic manifold to the frame mounting
bracket. Install cap screws, washers and lock nuts that
secure manifold to frame. Do not fully tighten fasteners.
CAUTION
3. Make sure all hydraulic connections, ports and fit-
tings are clean.
Before disconnecting any hydraulic compo-
nents, operate all sweeper hydraulic controls to
relieve system pressure and avoid injury from
pressurized hydraulic oil. See Relieving Hydrau-
lic System Pressure in the General Information
section of this chapter.
4. Remove caps or plugs that were put on hydraulic
hoses and fittings during manifold removal.
5. Lightly oil new O--rings for hydraulic fitting and hose
locations and install O--rings in fitting.
2. Relieve sweeper hydraulic system pressure.
6. Using labels placed during manifold removal, cor-
rectly connect hydraulic hoses to the manifold fittings.
Properly tighten all hydraulic connections (see Hydrau-
licHoseandTubeInstallationintheGeneralInformation
section of this chapter).
3. Thoroughly clean control manifold and manifold hy-
draulic connections.
NOTE: The ports on the control manifold are marked to
identify hydraulic hose connections. Example: P is the
pump connection port (see Hydraulic Schematic in this
chapter to identify the function of the hydraulic lines and
cartridge valves at each manifold port location).
7. Secure hydraulic manifold to machine by tightening
cap screws and lock nuts.
8. Using labels placed during manifold removal, con-
nect wire harness electrical connectors to solenoid
valves on control manifold.
4. Label all control manifold electrical and hydraulic
connections for assembly purposes.
5. Disconnect wire harness electrical connectors from
solenoid valves on control manifold.
3
2
1
6. Disconnect hydraulic hoses from manifold fittings.
7
2
7. Allow disconnected hydraulic hoses to drain into a
suitable container. Put caps or plugs on disconnected
hosesandfittingstopreventcontamination.Discardany
removed O--rings.
9
5
6
8. Support control manifold to prevent it from falling.
Remove two (2) cap screws, flat washers and lock nuts
that secure hydraulic manifold to the frame mounting
bracket.
5
4
3
8
1
3
5
9. Remove hydraulic manifold from the machine.
10.Remove hydraulic fittings from manifold as needed
(Fig. 18). Discard any removed O--rings.
Figure 18
1. O--ring
2. Hydraulic fitting
3. O--ring
6. O--ring
7. Hydraulic manifold
o
o
8. 90 hydraulic fitting
4. O--ring
9. 90 hydraulic fitting
5. Hydraulic fitting
Pro Sweep
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Hydraulic Control Manifold Service
FRONT
UP
20 ft--lb
(27 N--m)
17
25 ft--lb
(34 N--m)
1
60 in--lb
16
2
(6.8 N--m)
15
60 in--lb
(6.8 N--m)
3
6
14
4
5
7
7
8
13
9
20 ft--lb
(27 N--m)
12
6
11
20 ft--lb
(27 N--m)
10
20 ft--lb
(27 N--m)
7
60 in--lb
(6.8 N--m)
2
18
35 ft--lb
(47 N--m)
UP
20 ft--lb
(27 N--m)
FRONT
2
25 ft--lb
(34 N--m)
19
20
Figure 19
1. Orifice (0.050) (OR1)
2. #4 zero leak plug
3. Solenoid valve (SV1)
4. Coil spacer
8. Solenoid valve (SV2)
9. Solenoid valve (SV3)
10. Solenoid coil
11. Nut
12. Relief valve (RV)
15. Solenoid relief valve (SRV)
16. Pressure compensator valve (EC)
17. Hydraulic manifold
18. Shuttle valve (SH)
19. Orifice (0.060) (OR2)
5. Nut
6. Solenoid coil
7. #4 zero leak plug
13. Counterbalance valve (CB1 & CB2)
14. Nut
20. #6 zero leak plug
Hydraulic System
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NOTE: The ports on the manifold are marked for easy
identification of components. Examples: P is the pump
connection port and OR2 is the location for an orifice
(See Hydraulic Schematic to identify the function of the
hydraulic lines and cartridge valves at each port).
CAUTION
Use eye protection such as goggles when using
compressed air for cartridge valve cleaning.
Hydraulic Manifold Service (Fig. 19)
1. Make sure the control manifold is clean before re-
moving any cartridge valve.
CAUTION
2. If solenoid cartridge is being serviced, remove nut
securing solenoid to the cartridge valve. Carefully slide
solenoid off the valve.
Abrupt movement of internal spools can cause
stored fluid to be released suddenly.
6. Clean cartridge valve by submerging valve in clean
mineral spirits to flush out contamination. Particles as
fine as talcum powder can affect the operation of high
pressure hydraulic valves. If cartridge design allows,
use a wood or plastic probe to push the internal spool in
and out 20 to 30 times to flush out contamination. Be ex-
tremely careful to not damage cartridge. Use com-
pressed air for cleaning.
CAUTION
Before disconnecting any hydraulic compo-
nents, operate all sweeper hydraulic controls to
relieve system pressure and avoid injury from
pressurized hydraulic oil. See Relieving Hydrau-
lic System Pressure in the General Information
section of this chapter.
7. Install the cartridge valve into control manifold:
A. Lubricate new seal kit components with clean hy-
draulic oil and install on valve. The O--rings, sealing
ringsandbackupringsmustbearrangedproperlyon
the cartridge valve for proper operation and sealing.
WARNING
If control manifold is attached to sweeper, make
sure that sweeper is fully lowered before loosen-
ing hydraulic lines, cartridge valves or plugs
from control manifold. If sweeper is not fully low-
ered as manifold components are loosened,
sweeper may drop unexpectedly.
IMPORTANT: Use care when handling the valve
cartridge. Slight bending or distortion of the
stem tube can cause binding and malfunction.
B. Threadcartridgevalve carefullyinto correctman-
ifold port. The valve should go in easily without bind-
ing.
IMPORTANT: Use care when handling the cartridge
valve. Slight bending or distortion of the stem tube
can cause binding and malfunction.
C. Torquecartridgevalveusingadeepsockettoval-
ues identified in Figure 19.
3. Remove cartridge valve with a deep socket wrench.
Note correct location for O--rings, sealing rings and
backup rings. Remove and discard seal kit from valve.
8. If solenoid cartridge was removed, carefully install
solenoid coil onto the cartridge valve. Install nut and
torque nut to 60 in--lb (6.8 N--m) (do not over tighten).
4. Visually inspect the manifold port for damage to the
sealing surfaces, damaged threads or contamination.
9. After assembly, if problems still exist, remove valve
and clean again or replace valve.
5. Visually inspect cartridge valve for damaged sealing
surfaces and contamination.
A. Contamination may cause valves to stick or hang
up.Contaminationcanbecomelodgedinsmallvalve
orifices or seal areas causing malfunction.
B. If valve sealing surfaces appear pitted or dam-
aged, the hydraulic system may be overheating or
there may be water in the system.
Pro Sweep
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Lift Cylinder
RIGHT
2
FRONT
5
6
3
4
7
3
1
5
Figure 20
1. Main sweeper frame
2. Lift cylinder
4. Pivot pin
5. Lock nut
6. Pitch frame
7. Pivot pin
3. Cap screw
Hydraulic System
Page 3 -- 32
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Removal (Fig. 20)
Installation (Fig. 20)
1. Position sweeper on a level surface with dump hop-
per empty and fully lowered. Chock sweeper wheels to
prevent sweeper from moving. If sweeper is attached to
tow vehicle, apply tow vehicle parking brake, stop en-
gine and remove key from the ignition switch.
1. If removed, install hydraulic check valve fitting and
new O--ring into lift cylinder (Fig. 21) (see Hydraulic Fit-
tingInstallationintheGeneralInformationsectionofthis
chapter).
2. Position lift cylinder to the machine mounting points.
Make sure the port of the lift cylinder faces the front of
the machine.
CAUTION
3. Align lift cylinder mounting holes with frame mounts.
Install pivot pins. Secure pivot pins to frame with cap
screws and lock nuts.
Before disconnecting any hydraulic compo-
nents, operate all sweeper hydraulic controls to
relieve system pressure and avoid injury from
pressurized hydraulic oil. See Relieving Hydrau-
lic System Pressure in the General Information
section of this chapter.
4. Remove plugs from disconnected hose and fitting.
5. ConnecthydraulichosewithnewO--ring tohydraulic
fitting on lift cylinder. Tighten hose connection (see Hy-
draulic Hose and Tube Installation in the General Infor-
mation section of this chapter).
2. Relieve sweeper hydraulic system pressure.
6. Lubricate grease fittings on lift cylinder.
WARNING
Make sure that sweeper is fully lowered before
loosening hydraulic hose from lift cylinder. If
sweeper is not fully lowered as hose is loosened,
sweeper may drop unexpectedly.
2
3. Disconnect hydraulic hose from hydraulic fitting on
liftcylinder(Fig. 21). LocateanddiscardO--ringfrombe-
tweenhoseandfitting. Allowhosetodrainintoasuitable
container.
1
4. Plug disconnected hose andliftcylinderfitting topre-
vent contamination.
3
4
5
5. Remove lock nuts (item 5) and cap screws (item 3)
that are used to retain lift cylinder pivot pins (items 4 and
7) to sweeper frame.
6
CAUTION
Figure 21
To prevent personal injury, make sure that lift
cylinder is supported as it is removed from the
machine. Lift cylinder weighs approximately 43
pounds (19.5 kg).
1. Lift cylinder
2. Breather
3. O--ring
4. Check valve fitting
5. O--ring
6. Hydraulic hose
6. Support lift cylinder and slide pivot pins from the lift
cylinder and machine frame.
7. Remove lift cylinder from the machine.
8. If needed, remove hydraulic check valve fitting and
O--ring from the lift cylinder (Fig. 21). Discard O--ring.
Pro Sweep
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Lift Cylinder Service
1
2
7
3
4
8
10
11
5
12
9
250 to 300 ft--lb
(339 to 407 N--m)
6
Figure 22
1. Wear ring
2. Seal
3. O--ring
5. Rod
6. O--ring
7. Backup ring
9. Head
10. Wiper
11. Lock nut
12. Piston
4. Tube
8. Retaining ring
Disassembly (Fig. 22)
Spanner
wrench
1. Remove oil from the lift cylinder into a drain pan by
slowly pumping the cylinder rod. Plug ports and clean
the outside of the lift cylinder.
IMPORTANT: Prevent damage when clamping the
lift cylinder into a vise; clamp on the clevis only.
Retaining
ring
2. Mount lift cylinder in a vise so that the shaft end tilts
up slightly.
Figure 23
3. Using a spanner wrench, rotate head (item 9) clock-
wise until the edge of the retaining ring appears in the
tube opening. Insert a screwdriver under the beveled
edge of the retaining ring to start the retaining ring
through the tube opening. Rotate the head counter--
clockwise to remove retaining ring (item 8) as shown in
Figure 23.
IMPORTANT: Do not clamp vise jaws against rod
surface.
5. Mount rod securely in a vise by clamping vise on the
clevis of the shaft. Remove lock nut (item 11) and care-
fully slide piston and head from the rod.
4. Grasp end of rod; extract rod assembly by carefully
twisting and pulling on the rod.
Hydraulic System
Page 3 -- 34
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IMPORTANT: When removing seal components, be
careful to not scratch or damage piston or head.
3. Mount rod securely in a vise by clamping vise on the
clevis of the shaft. Carefully slide head assembly and
piston assembly onto the rod.
6. Remove and discard seal kit components from the
head and piston.
4. Thread lock nut (item 11) onto rod. Torque lock nut
from 250 to 300 ft--lb (339 to 407 N--m).
Inspection
5. Remove rod assembly from vise.
IMPORTANT: Prevent damage when clamping the
tube into a vise; clamp on the clevis only.
CAUTION
Use eye protection such as goggles when using
compressed air
6. Mount tube in a vise so that the rod end tilts up slight-
ly.
IMPORTANT: When installing the head into the
tube, pay careful attention to the retaining ring slot
in the tube to ensure that the backup ring does not
lodge in the slot.
1. Wash all cylinder parts in solvent. Dry parts with
compressed air.
2. Inspect internal surface of tube for deep scratches,
out--of--roundness and bending.
7. Coat all internal lift cylinder parts with a light coating
ofclean hydraulic oil. Slide rod assembly into tube being
careful to not damage the seals.
3. Inspect rod, piston and head for excessive pitting,
scoring or wear.
8. Secure head in tube by installing retaining ring (item
8).
4. If cylinder components are found to be worn or dam-
aged, replace cylinder.
A. Align retaining ring hole in the head with the ac-
cess slot in the tube.
Assembly (Fig. 22)
1. Coat new seal kit components with clean hydraulic
oil.
B. Insert the retaining ring hook into the hole and ro-
tate head clockwise until the retaining ring is com-
pletely pulled intothe tubeand theends arecovered.
IMPORTANT: When installing seal components, be
careful to not scratch or damage piston or head.
C. Apply silicone sealer to tube access slot.
2. Install new seals to the head and piston.
IMPORTANT: Do not clamp vise jaws against rod
surface.
Pro Sweep
Page 3 -- 35
Hydraulic System
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Offset Cylinder
7
RIGHT
4
FRONT
1
5
3
8
10
9
6
4
5
3
2
Figure 24
1. Offset cylinder
2. Hitch tongue
3. Pivot pin (2 used)
5. Flange nut (2 used)
6. Bracket
7. Hydraulic hose (2 used)
8. O--ring
9. 90 hydraulic fitting (2 used)
10. O--ring
o
4. Cap screw (2 used)
Hydraulic System
Page 3 -- 36
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Removal (Fig. 24)
Installation (Fig. 24)
1. Position sweeper on a level surface with dump hop-
per empty and fully lowered. Chock sweeper wheels to
prevent sweeper from moving. If sweeper is attached to
tow vehicle, apply tow vehicle parking brake, stop en-
gine and remove key from the ignition switch.
1. Iffittingswereremovedfromoffsetcylinder, lubricate
and place new O--rings onto fittings. Install fittings into
port openings using marks made during the removal
process to properly orientate fittings. Tighten fittings
(see Hydraulic Fitting Installation in the General Infor-
mation section of this chapter).
2. Position offset cylinder to the machine mounting
points. Makesuretheportsoftheoffsetcylinderfacethe
hitch tongue.
CAUTION
Before disconnecting any hydraulic compo-
nents, operate all sweeper hydraulic controls to
relieve system pressure and avoid injury from
pressurized hydraulic oil. See Relieving Hydrau-
lic System Pressure in the General Information
section of this chapter.
3. Align offset cylinder mounting holes with frame
mounts. Install pivot pins and secure with cap screws
and flange nuts.
4. Remove plugs from disconnected hoses and cylin-
der fittings.
2. Relieve sweeper hydraulic system pressure.
5. Connect hydraulic hoses with new O--rings to hy-
draulic fittings on offset cylinder. Tighten hose connec-
tions (see Hydraulic Hose and Tube Installation in the
General Information section of this chapter).
3. To prevent contamination of hydraulic system during
offset cylinder removal, thoroughly clean exterior of cyl-
inder and fittings.
6. Lubricate grease fittings on offset cylinder.
NOTE: Toeaseinstallation, labelthehydraulichosesto
show their correct position on the offset cylinder.
4. Remove hydraulic hoses fromoffsetcylinder. Locate
and discard O--rings from between hoses and fittings.
Allow hoses to drain into a suitable container.
5. Plug disconnected hoses and offset cylinder fittings
to prevent contamination.
6. Remove flange nuts (item 5) and cap screws (item4)
that are used to retain offset cylinder pivot pins (item 3)
to sweeper frame.
7. Support offset cylinder and slide pivot pins from the
cylinder and machine frame.
8. Remove offset cylinder from the machine.
9. If hydraulic fittings are to be removed from offset cyl-
inder, mark fitting orientation to allow correct assembly.
Remove fittings from cylinder and discard O--rings.
Pro Sweep
Page 3 -- 37
Hydraulic System
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Offset Cylinder Service
1
2
5
7
9
10
12
3
15
4
1
6
30 to 35 ft--lb
(41 to 47 N--m)
8
11
13
14
Figure 25
1. Grease fitting
2. Tube
3. Lock nut
4. Wear ring
5. Capseal
6. Piston
7. Spacer
8. O--ring
9. O--ring
11. Retaining ring
12. Seal
13. Head
14. Wiper
15. Rod
10. Backup washer
Hydraulic System
Page 3 -- 38
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Disassembly (Fig. 25)
Assembly (Fig. 25)
1. Remove oil from offset cylinder into a drain pan by
slowly pumping the cylinder rod. Plug both ports and
clean the outside of the cylinder.
1. Make sure all cylinder components are thoroughly
cleaned before assembly.
2. Coat new seal kit components with clean hydraulic
oil.
IMPORTANT: Prevent damage when clamping the
cylinder in a vise; clamp on the clevis only.
IMPORTANT: When installing seal components to
piston and head, be careful to not scratch or dam-
age piston or head.
2. Mount offset cylinder securely in a vise by clamping
on the clevis end of the tube. Use of a vise with soft jaws
is recommended.
A. Install new seals and O--rings to the piston.
3. Loosen head from tube:
B. Install new seals, O--ring and back--up ring to the
head.
A. Use a spanner wrench to rotate head clockwise
untiltheedgeoftheretainingringappearsinthetube
opening.
IMPORTANT: Do not clamp vise jaws against the
rod surface.
B. Insert a screwdriver under the beveled edge of
the retaining ring to start the retaining ring through
the tube opening.
3. Mount rod securely in a vise by clamping on the cle-
vis of the rod.
A. Coat shaft with clean hydraulic oil.
C. Rotatetheheadcounter--clockwisetoremovere-
taining ring from tube and head.
B. Carefully slide head and piston onto the rod. Se-
cure piston to shaft with lock nut.
4. Extract rod with head and piston by carefully twisting
and pulling on the shaft.
C. Torque lock nut from 30 to 35 ft--lb (41 to 47
N--m).
IMPORTANT: Do not clamp vise jaws against the
rod surface.
IMPORTANT: When installing the head into the
tube, pay careful attention to the retaining ring slot
in the tube to ensure that the backup ring does not
lodge in the slot.
5. Mount rod assembly securely in a vise by clamping
ontheclevisoftherod. Removelocknutandpistonfrom
the rod. Slide head off the rod.
4. Lubricate head and piston with clean hydraulic oil.
Carefully slide shaft assembly into cylinder tube.
IMPORTANT: When removing seal components, be
careful to not scratch or damage piston or head.
IMPORTANT: Prevent damage when clamping the
cylinder’s tube in a vise; clamp on the clevis only.
6. Removeanddiscardallsealkitcomponentsfromthe
piston and the head.
5. Mount offset cylinder in a vise with soft jaws. Secure
head in tube:
CAUTION
A. Align retaining ring hole in the head with the ac-
cess slot in the tube.
Use eye protection such as goggles when using
compressed air
B. Insert the retaining ring hook into the hole and ro-
tate head clockwise until the retaining ring is com-
pletely pulled into the tube and the ring ends are
covered.
7. Wash all cylinder parts in clean solvent. Dry parts
with compressed air. Do not wipe parts dry with paper
towels or cloth. Lint in a hydraulic system will cause
damage.
C. Apply silicone sealer to tube access slot.
8. Carefully inspect internal surface of tube for damage
(deep scratches, out--of--round, etc.). Inspect rod and
piston for evidence of excessive scoring, pitting or wear.
Replace offset cylinder if internal components are found
to be worn or damaged.
Pro Sweep
Page 3 -- 39
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Hydraulic System
Page 3 -- 40
Pro Sweep
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Chapter 4
Electrical System
Table of Contents
GENERAL INFORMATION . . . . . . . . . . . . . . . . . . . . . 2
Operator’s Manual . . . . . . . . . . . . . . . . . . . . . . . . . . 2
Electrical Diagrams . . . . . . . . . . . . . . . . . . . . . . . . . . 2
SPECIAL TOOLS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
TROUBLESHOOTING . . . . . . . . . . . . . . . . . . . . . . . . . 3
SAFETY INTERLOCK SYSTEM . . . . . . . . . . . . . . . . . 6
ADJUSTMENTS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Proximity Switches . . . . . . . . . . . . . . . . . . . . . . . . . . 7
COMPONENT TESTING . . . . . . . . . . . . . . . . . . . . . . . 8
Fuse . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Diode Assemblies . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Dump Beeper . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Relays . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Proximity Switches . . . . . . . . . . . . . . . . . . . . . . . . . 12
Solenoid Valve Coil . . . . . . . . . . . . . . . . . . . . . . . . . 15
Remote Transmitter . . . . . . . . . . . . . . . . . . . . . . . . 16
Control Module . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
SERVICE AND REPAIRS . . . . . . . . . . . . . . . . . . . . . 18
Solenoid Valve Coil . . . . . . . . . . . . . . . . . . . . . . . . . 18
Pro Sweep
Page 4 -- 1
Electrical System
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General Information
Operator’s Manual
The Operator’s Manual provides information regarding
the operation, general maintenance and maintenance
intervalsfor yourPro Sweepmachine. Referto thatpub-
lication for additional information when servicing the
machine.
Electrical Diagrams
The electrical schematic, circuit drawings and wire har-
ness drawings for the Pro Sweep are located in Chapter
6 -- Electrical Diagrams.
Special Tools
Multimeter
The multimeter can test electrical components and cir-
cuits for current (amps), resistance (ohms) or voltage.
Obtain this tool locally.
NOTE: Toro recommends the use of a DIGITAL Volt--
Ohm--Amp multimeter when testing electrical circuits.
Thehighimpedance(internalresistance)ofadigitalme-
ter in the voltage mode will make sure that excess cur-
rent is not allowed through the meter. This excess
current can cause damage to circuits not designed to
carry it.
Figure 1
Page 4 -- 2
Electrical System
Pro Sweep
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Troubleshooting
CAUTION
For effective troubleshooting and repairs, there must be
a good understanding of the electrical circuits (see
Chapter 6 -- Electrical Diagrams) and components used
on this machine.
Remove all jewelry, especially rings and
watches, before doing any electrical trouble-
shooting or testing. Disconnect the sweeper
power harness from the vehicle unless the test
requires battery voltage.
If the machine has any interlock switches by--passed,
they must be reconnected for proper safety and trouble-
shooting.
Problem
Possible Causes
No sweeper functions operate.
Electrical power from tow vehicle is not available (e.g.
sweeper power harness not connected to tow vehicle,
tow vehicle key not ON, vehicle battery is discharged).
Sweeper fuse (20 Amp) is faulty.
Control module has timed out due to 30 minutes of
inactivity.
Wires for remote transmitter learn function are plugged
together.
Remote transmitter batteries are discharged.
Remote transmitter and control module are not
synchronized.
Hydraulic problem exists (see Chapter 3 -- Hydraulic
System).
Remote transmitter is faulty.
Control module is faulty.
Brush does not rotate.
Sweeper is raised (brush should only rotate when
sweeper is below the transport position).
Broom enable proximity switch is out of adjustment.
Broom enable proximity switch or circuit wiring is faulty.
Broom relay or circuit wiring is faulty.
Solenoid valve coil (SRV) or circuit wiring is faulty.
Hydraulic problem exists (see Chapter 3 -- Hydraulic
System).
Brush rotates (but should not) when sweeper is raised Broom enable proximity switch is out of adjustment.
above the turn around position.
Broom enable proximity switch or circuit wiring is faulty.
Broom relay or circuit wiring is faulty.
Pro Sweep
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Electrical System
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Problem
Possible Causes
Sweeper does not raise at all.
Control module has timed out due to 30 minutes of
inactivity.
Turn around position proximity switch is out of
adjustment (sweeper not directly behind tow vehicle).
Transport position proximity switch is out of adjustment
(sweeper directly behind tow vehicle).
Diode D3 is faulty.
Up Function Select relay or circuit wiring is faulty.
Turn around position proximity switch or circuit wiring
is faulty (sweeper not directly behind tow vehicle).
Transport position proximity switch or circuit wiring is
faulty (sweeper directly behind tow vehicle).
Solenoid valve coil (SV3) or circuit wiring is faulty.
Hydraulic problem exists (see Chapter 3 -- Hydraulic
System).
Remote transmitter is faulty (other functions affected
as well).
Control module is faulty (other functions affected as
well).
Sweeper will raise to the turn around position but does Sweeper is offset (not directly behind tow vehicle).
not raise to the transport or dump position.
Hitch home proximity switch is out of adjustment.
Transport position proximity switch is out of
adjustment.
Hitch home proximity switch or circuit wiring is faulty.
Transport position proximity switch or circuit wiring is
faulty.
Hopper Height Select relay or circuit wiring is faulty.
Sweeper will raise to the turn around and transport
positions but does not raise to dump position.
Sweeper not in transport height position when
transmitter dump sequence is entered.
Transmitter button dump sequence not entered
correctly.
Hitch Home Verify for Dump relay or circuit wiring is
faulty.
Page 4 -- 4
Electrical System
Pro Sweep
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Problem
Possible Causes
Sweeper does not lower.
Control module has timed out due to 30 minutes of
inactivity.
Hopper safety support is installed on lift cylinder.
Diode D1 is faulty.
Down Float Latch relay or circuit wiring is faulty.
Down Latch Release relay or circuit wiring is faulty.
Solenoid valve coil (SV2) or circuit wiring is faulty.
Hydraulic problem exists (see Chapter 3 -- Hydraulic
System).
Sweeper offset does not function.
Control module has timed out due to 30 minutes of
inactivity.
Offset lockout proximity switch is out of adjustment.
Offset Lockout relay or circuit wiring is faulty.
Offset lockout proximity switch or circuit wiring is faulty.
Solenoid valve coil(s) (SV1) or circuit wiring is faulty.
Hydraulic problem exists (see Chapter 3 -- Hydraulic
System).
Pro Sweep
Page 4 -- 5
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Safety Interlock System
CAUTION
Do not disconnect the Pro Sweep proximity
switches or dump beeper. They arefor theoper-
ator’s protection. Check operation of the
switches and beeper daily to make sure the in-
terlock system is operating correctly. If any
switch or the beeper is not operating properly,
adjust or replace it before operating the sweep-
er.
The Pro Sweep safety interlock system ensures the fol-
lowing:
1. The brush will not rotate when the dump hopper is in
the raised position.
2. The dump hopper cannot be emptied when the
sweeper is in the offset position (not directly behind the
tow vehicle).
3. Thedumpbeeperwillsoundwhenemptyingthehop-
per.
Interlock system operation is described in the Pro
Sweep Operator’s Manual. Testing procedures for the
interlock system proximity switches and dump beeper
are included in the Component Testing section of this
Chapter.
Page 4 -- 6
Electrical System
Pro Sweep
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Adjustments
Proximity Switches
The Pro Sweep uses five (5) identical inductive proximi-
tyswitchestocontrolsweeperoperation. Theseproxim-
ity switches are normally open and close when a
sweeper frame component is positioned near the target
end of the switch. The switches incorporate a LED on
the cable end of the switch. The LED illuminates when
the switch is in the closed position. The switches are
mounted on the main sweeper frame in three (3) loca-
tions. Refer to Proximity Switches in the Component
Testing section for additional switch information.
0.110 to 0.170”
(2.8 to 4.3 mm)
2
3
3
Proximity Switch Adjustment
1. Position sweeper on a level surface with dump hop-
per empty and lowered. Have sweeper attached to tow-
ing vehicle with the sweeper positioned directly behind
the tow vehicle (not offset). Engage vehicle parking
brake, stop engine and remove key from the ignition
switch. Chock sweeper wheels to prevent sweeper from
moving.
1
Figure 2
1. Main frame
2. Pitch frame
3. Proximity switch
2. The target surface end of proximity switch should be
from 0.110” to 0.170” (2.8 to 4.3 mm) from sensing plate
on sweeper (Figs. 2 and 3).
0.110 to 0.170”
(2.8 to 4.3 mm)
3
3. If necessary, loosen jam nuts on switch and adjust
switch location to allow proper clearance between
switch and sensing plate.
1
2
4. After adjustment, torque jam nuts from 165 to 195
in--lb (18.7 to 22.0 N--m). After tightening jam nuts,
check that clearance between end of proximity switch
and sensing plate has not changed.
5. Afteradjustmentiscomplete,makesurethatproxim-
ity switch connector is plugged into sweeper wire har-
ness.
Figure 3
1. Main frame
3. Proximity switch
2. Tongue hitch
Pro Sweep
Page 4 -- 7
Electrical System
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Component Testing
For accurate resistance and/or continuity checks, elec-
trically disconnect the component being tested from the
circuit (e.g. unplug the relay wire harness connector be-
fore doing a continuity check on relay).
CAUTION
When testing electrical components for continu-
ity with a multimeter (ohms setting), make sure
that power to the circuit has been disconnected.
Fuse
The Pro Sweep uses a single 20 amp fuse for circuit
protection.Thefuseholderislocatedinthewireharness
(Fig. 4). If the fuse is faulty or missing, no electrical pow-
er will be available for sweeper operation.
1
Testing
Remove fuse from the fuse holder for testing. Fuse
should have continuity between fuse terminals.
Figure 4
1. Fuse holder
Diode Assemblies
Three (3) diode assemblies are used in the Pro Sweep
to provide logic for the control module functions. Diode
D1provideslogiccontrolforthesweeper downfunction.
Diodes D2 and D3 provide logic control for the sweeper
up function. All of these diodes plug into the wire har-
ness and are located near the offset cylinder.
2
1
3
Diode Testing
The diode (Fig. 5) can be tested using a digital multime-
ter (diode test setting) and the table to the right.
Figure 5
1. Diode
3. Female terminal
2. Male terminal
Multimeter
Red Lead (+)
on Terminal
Multimeter
Black Lead (--)
on Terminal
Continuity
Female
Male
Male
YES
NO
Female
Page 4 -- 8
Electrical System
Pro Sweep
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Dump Beeper
The dump beeper sounds to notify the operator and by-
standers when the sweeper is raised for the hopper
dump function. The beeper is attached to the frame in
front of the RH wheel (Fig. 6).
4
2
3
5
Testing
1. Position sweeper on a level surface with dump hop-
per lowered. If sweeper is attached to towing vehicle,
apply vehicle parking brake, stop engine and remove
key from the ignition switch.
1
2. To ensure that electrical power is removed from Pro
Sweep, disconnect sweeper power harness from tow
vehicle.
RIGHT
3. Remove cover from frame to access dump beeper.
4. Disconnect wire harness connector from beeper.
FRONT
Figure 6
IMPORTANT: Make sure to observe polarity on the
beeperterminalswhentesting. Damagetothebeep-
er may result from an improper connection.
1. Cover
2. Cap screw (3 used)
3. Washer (3 used)
4. Dump beeper
5. Tinnerman nut (3 used)
5. Correctly connect 12VDC source to the beeper ter-
minals (Fig. 7).
4
6. Beeper should sound as long as 12VDC is con-
nected to the beeper terminals.
7. Disconnect voltage source from the beeper. Recon-
nect wire harness connector to beeper.
1
2
3
8. Secure cover to frame. Connectsweeper power har-
ness to tow vehicle.
Figure 7
1. Top view
3. Positive (+) terminal
2. Bottom view
4. Negative (--) terminal
Pro Sweep
Page 4 -- 9
Electrical System
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Relays
8
9
5
4
10
3
7
2
6
1
RIGHT
FRONT
14
13
12
11
Figure 8
1. Cover
6. Lock nut (8 used)
11. Offset Lockout relay
2. Flat washer (3 used)
3. Cap screw (3 used)
4. Cap screw (8 used)
5. Flat washer (8 used)
7. Hopper Height Select relay
8. Logic Inverter relay
9. Broom relay
12. Down Latch Release relay
13. Down Float Latch relay
14. Hitch Home Verify for Dump relay
10. Up Function Select relay
The electrical system of the Pro Sweep includes eight
(8) relays used to control sweeper operation. These re-
lays are identical and are attached to the frame in front
of the RH wheel (Fig. 8). Relays can be identified by a
tag on the wire harness. Refer to circuit drawings in
Chapter 6 -- Electrical Diagrams for additional relay in-
formation.
The Down Latch Release and Down Float Latch relays
are used to control the sweeper down function. These
relays ensure that the sweeper continues to lower when
the operator presses the remote transmitter sweeper
down button. The relays are also used to stop the lower-
ing of the sweeper when the operator presses either the
stop or up button on the remote transmitter.
Relay Operation
The Logic Inverter relay is used to stop the sweeper
down function. During normal sweeper operation, the
Logic Inverter relay is energized by the remote receiver
which allows the operator to initiate the sweeper down
function with the remote transmitter. When the operator
presses theremote transmitterstop button, the LogicIn-
verter relay is de--energized which causes the sweeper
down function to stop.
The Broom relay is used to control the energizing of hy-
draulic manifold solenoid (SRV). When the Broom relay
is not energized (broom enable proximity switch open),
solenoid (SRV) will not be energized and the broom will
be stationary (notrotating). When the Broomrelay is en-
ergized (broom enable proximity switch closed), sole-
noid (SRV) will be energized to allow hydraulic flow to
the broom motor so the broom will rotate.
Page 4 -- 10
Electrical System
Pro Sweep
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The Up Function Selectrelay is used to control the ener-
gizing of hydraulic manifold solenoid (SV3) to raise the
sweeper. WhentheUpFunctionSelectrelayisnotener-
gized, solenoid (SV3) can be energized by the operator
for the hopper dump function. When the Up Function
Select relay is energized, solenoid (SV3) can be ener-
gized by the operator for the sweeper up function.
4. Verify coil resistance between terminals 85 and 86
with a multimeter (ohms setting). Resistance should be
from 70 to 90 ohms.
5. Connectmultimeter (ohmssetting) leadsto relayter-
minals 30 and 87. Ground terminal 86 and apply +12
VDC to terminal 85. The relay should make and break
continuity between terminals 30 and 87 as +12 VDC is
applied and removed from terminal 85.
The Hopper Height Select relay is used control the
height that the hopper can be raised. When the Hopper
Height Select relay is not energized (sweeper is offset
so hitch home proximity switch is open), the hopper can
only be raised to the turn--around position. When the
Hopper Height Select relay is energized (hitch home
proximity switch is closed), the hopper can be raised to
the transport position and the hopper dump function is
allowed.
6. Disconnect voltage from terminal 85 and multimeter
lead from terminal 87.
7. Connectmultimeter (ohmssetting) leadsto relayter-
minals 30 and 87A. Apply +12 VDC to terminal 85. The
relay should break and make continuity between termi-
nals 30 and 87A as +12 VDC is applied and removed
from terminal 85.
The Hitch Home Verify for Dump relay is used to prevent
the hopper dump function when the sweeper is offset
(not directly behind the tow vehicle). When the Hitch
Home Verify for Dump relay is not energized (sweeper
is offset so hitch home proximity switch is open), the
hopper dump function is disabled. When the Hitch
Home Verify for Dump relay is energized (hitch home
proximity switch is closed), the hopper dump function is
allowed.
8. Disconnect voltage and multimeter leads from the
relay terminals.
9. Secure relay to mounting bracket and connect wire
harness connector to relay.
10.Secure cover to frame. Connectsweeper power har-
ness to tow vehicle.
TheOffsetLockoutrelayisusedtopreventoffsettingthe
sweeperwhenthedumphopperisraised.WhentheOff-
set Lockout relay is not energized (hopper raised so off-
set lockout proximity switch is open), sweeper offset
(both right and left) is disabled. The energized Offset
Lockout relay also causes the dump beeper to sound.
WhentheOffsetLockoutrelayisenergized(hopperlow-
ered so offset lockout proximity switch is closed),
sweeper offset is allowed.
4
3
Relay Testing
1
1. Position sweeper on a level surface with dump hop-
per lowered. If sweeper is attached to towing vehicle,
apply vehicle parking brake, stop engine and remove
key from the ignition switch. To ensure that electrical
powerisremovedfromProSweep, disconnectsweeper
power harness from tow vehicle.
86
85
87A
87
30
2. Remove cover from frame to access relays (Fig. 8).
3. Locaterelaythatistobetested. Disconnectwirehar-
nessconnectorfromrelay.Removerelayfrommounting
bracket for testing.
1
2
Figure 9
NOTE: Prior to taking small resistance readings with a
digital multimeter, short the meter test leads together.
The meter will display a small resistance value (usually
0.5 ohms or less). This resistance is due to the internal
resistance of the meter and test leads. Subtract this val-
ue from from the measured value of the component you
are testing.
1. Coil terminal
2. Common terminal
3. Normally closed term.
4. Normally open term.
Pro Sweep
Page 4 -- 11
Electrical System
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Proximity Switches
5
4
5
4
3
RIGHT
2
FRONT
6
7
8
1
4
5
5
4
9
Figure 10
1. LH switch plate
2. Offset lockout switch (hole 5)
3. Turn around position switch (hole 1)
4. Lock nut (2 used per switch)
5. Lock washer (2 used per switch)
6. RH switch plate
7. Transport position switch (hole 3)
8. Broom enable switch (hole 7)
9. Hitch home switch
The Pro Sweep uses five (5) identical inductive proximi-
tyswitchestocontrolsweeperoperation. Theseproxim-
ity switches are normally open and close when a
sweeper frame component is positioned near the target
end of the switch. The switches incorporate a LED on
the cable end of the switch. The LED illuminates when
the switch is in the closed position. The switches are
mounted on the main sweeper frame in three (3) loca-
tions (Fig. 10).
This switch is used to identify the dump hopper turn
around height position when the sweeper is offset (not
positioned directly behind the tow vehicle). The sensing
platefortheturnaroundpositionswitchisagussetatthe
top of the pitch frame.
The transport position proximity switch is located on the
RHswitchplateintheholeidentifiedwithnumber3. This
switch is used to identify the dump hopper transport
height position when the sweeper is positioned directly
behind the tow vehicle (not offset). The sensing plate for
the transport position switch is a gusset at the top of the
pitch frame.
Proximity Switch Operation
The turn around position proximity switch is located on
the RH switch plate in the hole identified with number 1.
Page 4 -- 12
Electrical System
Pro Sweep
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The offset lockout proximity switch is located on the LH
switch plate in the hole identified with number 5. This
switch is used to prevent the offset operation while the
dump hopper is in a raised position. The sensing plate
for the offset lockout switch is a pitch frame gusset.
LOWERED POSITION
The broom enable proximity switch is located on the LH
switch plate in the hole identified with number 7. This
switch is used to engage the brush. The sensing plate
for the broom enable switch is a pitch frame gusset.
The hitch home proximity switch is located on the front
of the frame near the hitch tongue pivot pin. This switch
isusedtoidentifywhenthesweeperispositioneddirect-
ly behind the tow vehicle (not offset). The sensing plate
for the hitch home switch is a plate on the hitch tongue.
TURN AROUND POSITION
Proximity Switch Testing
1. Position sweeper attached to tow vehicle on a level
surface with dump hopper empty and sweeper lowered.
Engage vehicle parking brake, stop engine and remove
key from the ignition switch. Chock sweeper wheels to
prevent sweeper from moving.
TRANSPORT POSITION
(SWEEPER NOT OFFSET)
2. Depending on which proximity switch is to be tested,
position the sweeper as listed below (Figs. 11 and 12).
In this sweeper position, the LED on cable end of proxi-
mityswitchshouldbeilluminatedwhenelectricalpower
is available to sweeper.
Turn Around Position Switch (hole number 1):
Sweeper offset and lowered.
Figure 11
Transport Position Switch (number 3): Sweeper not
offset and lowered.
SWEEPER
OFFSET
SWEEPER NOT
OFFSET
Offset Lockout Switch (number 5): Sweeper low-
ered.
BroomEnableSwitch(number7):Sweeperlowered.
Hitch Home Switch: Sweeper not offset.
3. Depending on which proximity switch is to be tested,
position the sweeper as listed below (Figs. 11 and 12).
In this sweeper position, the LED on cable end of proxi-
mity switch should not be illuminated when electrical
power is available to sweeper.
Turn Around Position Switch (hole number 1):
Sweeper offset and raised to turn around position.
Transport Position Switch (number 3): Sweeper not
offset and raised to transport position.
Figure 12
Offset Lockout Switch (number 5): Sweeper not off-
set and raised slightly higher than transport position.
Broom Enable Switch (number 7): Sweeper not off-
set and raised to transport position.
Hitch Home Switch: Sweeper offset.
Pro Sweep
Page 4 -- 13
Electrical System
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4. If a proximity switch LED does not function correctly:
C. Make sure that gap between end of proximity
switch and frame sensing plate is from 0.110” to
0.170” (2.8 to 4.3 mm). If necessary, adjust proximity
switch (see Proximity Switches in the Adjustments
section).
A. Disconnect sweeper power harness from tow ve-
hicle. Then, disconnect the proximity switch connec-
tor from the sweeper wire harness. Reconnect
sweeper power harness to tow vehicle.
D. Make sure that sweeper wire harness ground
wire (black) is closed to ground.
B. Using a multimeter, verify that the sweeper wire
harness connector terminal for the appropriate wire
has 12 VDC when electrical power exists to sweeper
and sweeper is positioned as listed below.
E. If harness wire has system voltage present and
gap is correct but switch LED did not function, re-
place proximity switch. Make sure that switch is
properly adjusted (see Proximity Switches in the Ad-
justments section).
Turn Around Position Switch (hole number 1):
Violet harness wire has 12 VDC when sweeper is
lowered and offset.
5. After testing is complete, make sure that switch con-
nector is plugged into sweeper wire harness. Connect
sweeper power harness to tow vehicle.
Transport Position Switch (number 3): Yellow
harness wire has 12 VDC when sweeper is low-
ered and not offset.
Offset Lockout Switch (number 5): Pink harness
wire has 12 VDC in any sweeper position.
Broom Enable Switch (number 7): Pink harness
wire has 12 VDC in any sweeper position.
Hitch Home Switch: Pink harness wire has 12
VDC in any sweeper position.
PROXIMITY SWITCH STATUS CHART
KEY TO CHART
O
X
Proximity Switch Open (LED OFF)
Proximity Switch Closed (LED ON)
MACHINE FUNCTION
Sweeper in Offset Position with Sweeper Head Below Turn Around Position
Sweeper in Offset Position with Sweeper Head At Turn Around Position
X
O
O
X
X
X
O
O
O
O
Sweeper NOT in Offset Position with Sweeper Head Below Turn Around Position
Sweeper NOT in Offset Position with Sweeper Head Between Turn Around and Transport Position
Sweeper NOT in Offset Position with Sweeper Head At Transport Position
O
O
O
O
X
X
O
O
X
X
X
O
X
X
X
X
X
O
O
O
Sweeper NOT in Offset Position with Sweeper Head Above Transport Position
Sweeper Head Turn Around Position is from 8 1/2” to 10 1/2” (215.9 to 266.7 mm) from Ground
Sweeper Head Transport Position is from 13 1/4” to 15 1/4” (336.6 to 387.4 mm) from Ground
Page 4 -- 14
Electrical System
Pro Sweep
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Solenoid Valve Coil
ThehydraulicsystemontheProSweep usesfive (5)so-
lenoid valve coils on the hydraulic control manifold (Fig.
13).
Testing
1
1. Position sweeper on a level surface with dump hop-
per lowered. If sweeper is attached to towing vehicle,
apply vehicle parking brake, stop engine and remove
key from the ignition switch.
2
2. To ensure that electrical power is removed from Pro
Sweep, disconnect sweeper power harness from tow
vehicle.
3
NOTE: The solenoid coil does not have to be removed
from the cartridge valve for testing.
RIGHT
FRONT
4
3. Unplug wire harness connector from solenoid valve
coil.
Figure 13
NOTE: Prior to taking small resistance readings with a
digital multimeter, short the test leads together. The me-
ter will display a small resistance value (usually 0.5
ohms or less). This resistance is due to the internal re-
sistance of the meter and test leads. Subtract this value
fromfrom themeasured valueofthecomponentyouare
testing.
1. Solenoid SV1
2. Solenoid SV2
3. Solenoid SV3
4. Solenoid SRV
4. Using a multimeter (ohms setting), measure resis-
tance between the two connector terminals on the sole-
noid coil. The resistance for the solenoid coils is
identified below:
Solenoid Coil
Resistance
7.1 ohms
8.6 ohms
8.6 ohms
7.1 ohms
SV1 (2 coils used)
SV2
SV3
SRV
5. If solenoid coil needs replacement, see Solenoid
Valve Coil in the Service and Repairs section of this
chapter.
6. Connect wire harness connector to the solenoid
valve coil.
7. Connect sweeper power harness to tow vehicle.
Pro Sweep
Page 4 -- 15
Electrical System
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Remote Transmitter
The remote transmitter(Fig. 14)is asolid stateelectrical
device that sends radio frequency (RF) signal inputs to
the sweeper control module for operator control of ma-
chine electrical operation. The remote transmitter has
sufficient range to send an RF signal to the control mod-
ule from the tow vehicle operator position.
The remote transmitter is powered by three (3) AAA al-
kaline batteries. If the range of the remote transmitter
has diminished or the transmitter LED does not flicker
when a button is pressed, the batteries should be re-
placed.
To replace the remote transmitter batteries:
When a button on the remote transmitter is pressed, the
LED on the remote should flicker. If the machine control
moduleisenergized(controlmoduleTimeOutandPow-
er LED’s are both illuminated) and a remote transmitter
button is pressed, the corresponding control module
LED should illuminate and the control module RF activi-
ty LED should flicker.
1. Remove six (6) screws that secure the rear cover to
the remote transmitter.
2. Lift rear cover from remote transmitter.
3. Remove batteries from remote transmitter and re-
place with three (3) new AAA alkaline batteries. Make
sure to note battery direction when installing batteries in
transmitter.
If the control module is energized (control module Time
Out and Power LED’s are both illuminated) and the tow
vehicle hydraulics are engaged, remote button func-
tions are as follows:
4. Place rear cover on remote transmitter and secure
with six (6) screws.
Pressing the Sweeper Up button causes the sweeper to
raise. The Sweeper Up button can also be used to stop
the sweeper from lowering.
6
1
PressingtheSweeperDownbuttoncausesthesweeper
tolower.PressingtheSweeperUportheStopbuttonwill
stop the lower function.
2
Pressing the Offset Right button causes the sweeper to
offsetto the right. The sweeper will continue to offsetun-
til the button is released.
5
4
Pressing the Offset Left button causes the sweeper to
offset to the left. The sweeper will continue to offset until
the button is released.
3
7
Pressing the Stop button causes any active function to
be disabled.
NOTE: When the stop button on the remote transmitter
is pressed, there will be a three (3) second delay before
the stop LED on the control module illuminates. Also, for
approximately five (5) seconds after the stop button is
pressed, the control module stop LED will remain illumi-
nated and no other remote transmitter operations can
be performed.
Figure 14
1. Remote LED
5. Offset Left button
6. Stop button
2. Sweeper Up button
3. Sweeper Down button
4. Offset Right button
7. Hopper Dump button
Pressing the Hopper Dump button with the sweeper in
the transport position initiates a starting sequence to ful-
ly raise the hopper for dumping collected material. This
sequence (see Operator’s Manual) is necessary to pre-
vent unintentional dumping. After pressing the Hopper
Dump button, other transmitter buttons are inactive for
approximately five (5) seconds.
Page 4 -- 16
Electrical System
Pro Sweep
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Control Module
The control module is a solid state electrical device that
receives signal inputs from the remote transmitter and
uses those inputs to control sweeper electrical opera-
tion. The control module is attached to the frame in front
of the RH wheel (Fig. 15).
2
Inputs from the remote transmitter are monitored by the
control module. Output to machine relays and hydraulic
solenoid valve coils are controlled based on the inputs
received by the control module.
To begin sweeper operation, providing electrical power
to the sweeper power harness is used to turn on or
“wake up” the control module. The control module Time
Out and Power LED’s should both be illuminated during
sweeper operation (Fig. 16).
1
Figure 15
1. Control module
2. LED location
When a remote transmitter button is pressed, the corre-
sponding control module LED should illuminate and the
control module RF activity LED should flicker (Fig. 16).
Model: 07066
Tested to Comply
NOTE: Because of the normal RF activity in the envi-
ronment, the control module RF activity LED may flicker
or be illuminated at any time during machine operation.
Machine operation will only be controlled by the remote
transmitter that is recognized by the control module.
With FCC Standards
1
2
3
4
5
F O R H O M E O R O F F IC E U S
E
N
1
6
2
5
Canada
3575APFB1
Made in U.S.A.
NOTE: When the stop button on the remote transmitter
is pressed, there will be a three (3) second delay before
the control module stop LED illuminates. Also, the con-
trol module stop LED will remain illuminated and no oth-
er remote transmitter operations can be performed for
approximately five (5) seconds.
The control module includes a timer to allow machine
operation for 30 minutes after the last control input (e.g.
remote transmitter button pressed). If no inputs are pro-
vided to the control module during this time period, the
control module will shut off all sweeper electrical power.
7
8
The control module does not connect to an external
computer or hand held device, cannot be re--pro-
grammed and does not record any fault data.
9
6
115--9062
Because of the solid state circuitry built into the control
module,thereisnoreliablemethodtotestit.Themodule
may be damaged if an attempt is made to test it with an
electrical test device, such as a digital multimeter.
Figure 16
1. Sweeper up LED
2. Sweeper down LED
3. Offset right LED
4. Offset left LED
5. Stop LED
6. Hopper dump LED
7. Time out LED
8. Power LED
IMPORTANT: To prevent damage to the Pro Sweep
electrical system, disconnect the electrical power
harness from the tow vehicle before performing any
welding on the machine.
9. RF activity LED
Pro Sweep
Page 4 -- 17
Electrical System
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Service and Repairs
Solenoid Valve Coil
2
60 in--lb
(6.8 N--m)
3
1
6
7
4
8
9
6
FRONT
UP
11
10
5
60 in--lb
(6.8 N--m)
60 in--lb
(6.8 N--m)
Figure 17
1. Solenoid valve (SV1)
2. Hydraulic manifold
3. Solenoid relief valve (SRV)
4. Coil spacer
5. Nut
9. Solenoid valve (SV3)
10. Solenoid coil
11. Nut
6. Solenoid coil
7. Nut
8. Solenoid valve (SV2)
The solenoid valve coils on the hydraulic control man-
ifold (Fig. 17) can be removed and installed without
opening the hydraulic system.
4. Remove the nut from the cartridge valve.
5. Slide the solenoid coil from the cartridge.
6. Clean all corrosion or dirt from the cartridge stem.
Installation
Removal
1. Position sweeper on a level surface with dump hop-
per lowered. If sweeper is attached to towing vehicle,
apply vehicle parking brake, stop engine and remove
key from the ignition switch.
1. Slide solenoid coil onto the cartridge stem.
2. Install the nut onto the cartridge and torque nut 60
in--lb (6.8 N--m) (do not over tighten).
2. To ensure that electrical power is removed from Pro
Sweep, disconnect sweeper power harness from tow
vehicle.
3. Connect the machine wire harness electrical con-
nector to the solenoid coil.
3. Disconnect the machine wire harness electrical con-
nector from the solenoid coil to be removed.
Page 4 -- 18
Electrical System
Pro Sweep
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Chapter 5
Chassis
Table of Contents
SPECIFICATIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
GENERAL INFORMATION . . . . . . . . . . . . . . . . . . . . . 3
Operator’s Manual . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Securing Pro Sweep to Tow Vehicle . . . . . . . . . . . 3
SERVICE AND REPAIRS . . . . . . . . . . . . . . . . . . . . . . 4
Wheels . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Wheel Bearings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Servicing the Brush Housing . . . . . . . . . . . . . . . . . . 8
Brush . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Brush Housing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Roller . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Frame Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
Pro Sweep
Page 5 -- 1
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Specifications
Item
Description
Tires
Size
Pressure
26.5 x 14 -- 12, 4 Ply, Tubeless
12.5 PSI (86 kPa)
Wheel Lug Nut Torque
70 to 90 ft--lb (95 to 122 N--m)
Chassis
Page 5 -- 2
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General Information
Operator’s Manual
The Operator’s Manual provides information regarding
the operation, general maintenance and maintenance
intervalsfor yourPro Sweepmachine. Referto thatpub-
lication for additional information when servicing the
machine.
Securing Pro Sweep to Tow Vehicle
While operating or servicing the Pro Sweep, make sure
that hitch pin is properly positioned in tow vehicle hitch
and sweeper tongue. Hitch pin should be secured with
hairpin clip (Fig. 1).
1
2
Figure 1
1. Hitch pin
2. Hairpin clip
Pro Sweep
Page 5 -- 3
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Service and Repairs
Wheels
RIGHT
FRONT
70 to 90 ft--lb
(95 to 122 N--m)
1
3
6
2
5
7
8
63 to 77 ft--lb
(86 to 104 N--m)
4
Figure 2
1. Main frame
2. Lug nut (5 used per wheel)
3. Wheel and tire assembly
4. Wheel hub
5. Axle
6. Cap screw (4 used)
7. Support washer (4 used)
8. Flange nut (4 used)
Chassis
Page 5 -- 4
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Wheel Removal (Fig. 2)
Wheel Installation (Fig. 2)
1. Position sweeper on a level surface with dump hop-
per empty and lowered. Have sweeper attached to tow-
ing vehicle, apply vehicle parking brake, stop engine
and remove key from the ignition switch. Chock sweep-
er wheels to prevent sweeper from moving.
1. Position wheel to wheel hub.
2. Secure wheel to sweeper with five (5) lug nuts.
3. Carefully lower machine to ground.
2. Jack or hoist sweeper from ground and support ma-
chine with appropriate jack stands (see Operator’s
Manual and Jacking Instructions in Chapter 1 -- Safety).
WARNING
Failure to maintain proper lug nut torque could
result in failure or loss of wheel and may result in
personal injury.
3. Loosen andremove five(5) lugnuts fromwheeltobe
removed.
4. Pull wheel from sweeper.
4. Torquelugnutsinacriss--crosspatternfrom70to90
ft--lb (95 to 122 N--m).
Pro Sweep
Page 5 -- 5
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Wheel Bearings
2
See text for
tightening procedure
4
6
7
1
8
11
3
12
13
5
9
10
Figure 3
1. Axle
6. Lug bolt (5 used)
7. Outer bearing cup
8. Outer bearing cone
9. Lug nut (5 used)
10. Washer
2. Grease seal
3. Inner bearing cone
4. Inner bearing cup
5. Wheel hub
11. Slotted hex nut
12. Cotter pin
13. Dust cup
Chassis
Page 5 -- 6
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Removal (Fig. 3)
Installation (Fig. 3)
1. Position sweeper on a level surface with dump hop-
per empty and lowered. Have sweeper attached to tow-
ing vehicle, apply vehicle parking brake, stop engine
and remove key from the ignition switch. Chock sweep-
er wheels to prevent sweeper from moving.
1. Clean all parts thoroughly before reassembly.
2. Assemble wheel hub:
A. If bearing cups were removed from the wheel
hub, press inner and outer cups into the hub until
they seat against the hub shoulder.
2. Jack or hoist sweeper from ground and support ma-
chine with jack stands (see Operator’s Manual and
Jacking Instructions in Chapter 1 -- Safety).
B. If lug bolts were removed from hub, press new
bolts into hub. Make sure that head of bolt is fully to
hub surface.
3. Remove wheel assembly (see Wheel Removal in
this section).
C. Pack both bearing cones with grease. Install
greased inner bearing into the cup on inboard side of
the wheel hub.
4. Carefully pry dust cap from wheel hub.
5. Remove cotter pin from axle spindle.
D. Fill hub approximately 50% full of grease.
6. Remove slotted hex nut and washer that secures
wheel hub to spindle. Slide wheel hub with bearings
from spindle.
IMPORTANT: The grease seal must be pressed
in so it is flush with the end of the hub. The lip of
the seal must face the bearing.
7. Disassemble wheel hub:
E. Lubricate the inside of a new grease seal and
press it into the wheel hub.
A. Pull grease seal out of the wheel hub. Discard
seal.
3. Install the wheel hub onto the axle spindle taking
care to not damage grease seal in wheel hub.
B. Remove bearing cones from both sides of wheel
hub. Clean bearings in solvent. Clean inside of hub.
4. Install greased outer bearing cone, washer and
slotted hex nut onto spindle shaft.
C. If necessary, remove bearing cups from hub us-
ing a hammer and punch. Take care to not damage
hub as bearing cups are removed.
5. While rotating the wheel hub by hand, torque the
slotted hex nut from 75 to 180 in-lb (8.5 to 20.3 N--m)
to seat bearings. Loosen nut until it is away from washer
and hub has end play. Finally, while rotating hub, tighten
slotted hex nut from 15 to 20 in--lbs (1.7 to 2.3 N--m).
D. Inspectwheelbearings.Checkthebearingcones
and bearing cups for wear, pitting or other damage.
Replace worn or damaged parts.
E. Ifnecessary, use a press to remove lug boltsfrom
hub.
6. Install cotter pin through axle spindle hole. Install
dust cap to hub.
WARNING
Failure to maintain proper lug nut torque could
result in failure or loss of wheel and may result in
personal injury.
7. Install wheel assembly(see WheelInstallation inthis
section).
8. Carefully lower machine to ground. Make sure that
lug nuts are torqued in a criss--cross pattern from 70 to
90 ft--lb (95 to 122 N--m).
Pro Sweep
Page 5 -- 7
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Servicing the Brush Housing
RIGHT
FRONT
1
2
5
3
4
Figure 4
1. Saddle frame
2. Roller
3. Hydraulic brush motor
4. Brush
5. Brush housing
Chassis
Page 5 -- 8
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To perform service on the brush housing, brush assem-
bly or roller, the following procedure can be used. These
steps will reduce the chance that brush housing compo-
nents will fall or shift during the service process.
4. Start tow vehicle. Slowly raise sweeper hopper while
allowing brush housing component(s) to remain on the
ground.
5. Raise hopper and place cylinder stop on lift cylinder
to secure sweeper frame.
1. Position sweeper on a level surface with dump hop-
per empty and lowered. Have sweeper attached to tow-
ing vehicle, apply vehicle parking brake, stop engine
and remove key from the ignition switch. Chock sweep-
er wheels to prevent sweeper from moving.
6. Perform necessary service on removed compo-
nent(s).
7. Once necessary service has been completed, posi-
tion serviced component(s) under raised hopper.
2. With brush housing resting on the ground, remove
fasteners that secure component(s) that are to be re-
moved (see Brush, Brush Housing and/or Roller in this
section).
8. Remove cylinder stop from lift cylinder. Slowly lower
hopper to correctly position component(s) to be
installed.
3. Supportcomponent(s) to preventit(them) fromshift-
ing position.
9. Install component(s) to machine (see Brush, Brush
Housing and/or Roller in this section).
Pro Sweep
Page 5 -- 9
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Brush
94 to 116 ft--lb
(128 to 157 N--m)
4
5
18
3
2
Antiseize
Lubricant
29
1
6
7
26
8
13
Antiseize
Lubricant
9
10
1
14
23
11
12
15
14
28
20
16
Loctite #242
61 to 85 in--lb
(6.9 to 9.6 N--m)
RIGHT
19
17
25
27
5
FRONT
21
5
24
5
22
Figure 5
1. Carriage screw
2. Top rubber shield
3. Lock nut (2 used)
4. Top shield plate
5. Flange nut
11. Cap screw (2 used)
12. Hydraulic brush motor
13. Coupler jaw
14. Set screw (2 used per jaw)
15. Coupler spider
16. Flat washer (3 used per bearing)
17. Lock nut (3 used per bearing)
18. Brush housing
21. Side angle plate (2 used)
22. Side rubber shield (2 used)
23. Side shield plate (2 used)
24. Front rubber shield
25. Front shield plate
26. Front angle plate
27. Carriage screw
28. Square key
29. Brush assembly
6. Flat washer (2 used)
7. Carriage bolt (3 used per bearing)
8. Cap screw (4 used per cover)
9. Lock washer (4 used per cover)
10. Coupler cover (2 used)
19. Bearing assembly
20. Bearing flange (2 used per bearing)
Removal (Fig. 5)
3. Loosensetscrews(item14)thatsecurecouplingjaw
to brush shaft. Slide coupling jaw from shaft. Locate and
retrieve square key from brush shaft.
1. Position sweeper on a level surface with dump hop-
per empty and lowered. Have sweeper attached to tow-
ing vehicle, apply vehicle parking brake, stop engine
and remove key from the ignition switch. Chock sweep-
er wheels to prevent sweeper from moving.
NOTE: If desired, brush housing (with brush installed)
can be removed from sweeper to allow brush removal
(see Brush Housing Removal in this section).
2. Remove hydraulic brush motor from brush housing
(see Hydraulic Brush Motor Removal in the Service and
Repairs section of Chapter 3 -- Hydraulic System). Re-
move coupler spider (item 15).
4. Remove carriage bolts (item 7), flat washers (item
16) and lock nuts (item 17) that secure bearing flanges
to brush housing.
Chassis
Page 5 -- 10
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5. Support brush assembly to prevent it from moving.
Follow Servicing the Brush Housing procedure in this
section to remove brush from brush housing.
8. Positionsquarekeyinbrushshaft.Slidecouplingjaw
onto drive end of brush shaft.
9. Place coupler spider into coupling jaw on brush
shaft.
6. After raising hopper and placing lift cylinder stop, re-
trieve brush assembly from under machine.
10.Install hydraulic brush motor to brush housing (see
Hydraulic Brush Motor Installation in the Service and
Repairs section of Chapter 3 -- Hydraulic System).
7. Loosen three (3) set screws that secure bearings to
brushshaft. Slidebearingandbearingflangesfromboth
ends of shaft.
11.Make sure that coupling jaws have a gap between
coupler jaw valleys from 0.830” to 0.930” (21.1 to 23.6
mm). Apply Loctite #242 (or equivalent) to threads of
coupling set screws. Secure coupling jaws to motor
shaft and brush shaft by torquing set screws from 61 to
85 in--lb (6.9 to 9.6 N--m) (Fig. 7).
8. Disassemble brush using Figure 6 as a guide.
Installation (Fig. 5)
1. Assemble brush using Figure 6 as a guide. Torque
flange nuts from 27 to 33 ft--lb (37 to 44 N--m).
2. Thoroughly clean brush shaft surface. If necessary,
remove nicks or burrs on shaft with emery cloth or fine
file. Apply antiseize lubricant to shaft.
6
27 to 33 in--lb
(37 to 44 N--m)
3. Slide bearing flanges and bearing assembly to each
end of brush shaft with bearing set screws orientated to
outside of brush. Do not tighten bearing set screws at
this time.
4
2
4. Position brush assembly under raised hopper.
5. Slowly lower hopper to position brush assembly to
brush housing (see Servicing the Brush Housing in this
section).
1
5
3
5
4
6. Secure bearing flanges to brush housing with car-
riage bolts (item 7), flat washers (item 16) and lock nuts
(item 17). Center brush between bearings.
Figure 6
1. Brush
2. Flange nut (2 used)
3. Cap screw (2 used)
4. Key (4 used)
5. Washer (4 used)
6. Brush axle
7. Secure the bearings to the brush shaft as follows:
A. Position the bearing collar so that a set screw is
directlyoppositethesplitinthebearingsleeve.Tight-
en three (3) setscrews in bearing so thatthey are fin-
ger tight. Make sure that brush is still centered
between bearings.
Antiseize
Lubricant
Antiseize
Lubricant
4
3
2
B. Starting with the set screw that is opposite from
the split in the sleeve, tighten all set screws 1/4 turn.
1
C. Again, starting with the set screw that is opposite
from the split in the sleeve, tighten all set screws an
additional 1/4 turn.
5
6
3
7
NOTE: A replacement bearing includes an allen
wrench and torque indicator that can be used to
properly torque bearing setscrews. When tightening
set screws, the torque is correct when the long end
of the allen wrench contacts the torque indicator.
61 to 85 in--lb
(6.9 to 9.6 N--m)
Loctite #242
5. Brush
Figure 7
1. Hydraulic brush motor
2. Key
6. Square key
7. Set screw (2 per jaw)
D. Finally, starting with the set screw that is opposite
from the split in the sleeve, torque all set screws 66
in--lb (7.5 N--m).
3. Coupling jaw
4. Coupling spider
Pro Sweep
Page 5 -- 11
Chassis
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Brush Housing
1
94 to 116 ft--lb
(128 to 157 N--m)
2
3
94 to 116 ft--lb
(128 to 157 N--m)
2
3
8
7
6
4
6
7
4
5
11
RIGHT
10
9
FRONT
Figure 8
1. Saddle frame
2. Cap screw
3. Lock nut
5. Pivot mount (2 used)
6. Grease fitting (1 used per mount)
7. Thrust washer
9. Cap screw
10. Flat washer
11. Hardened spacer
4. Flange bushing (2 used per mount)
8. Brush housing
Chassis
Page 5 -- 12
Pro Sweep
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Removal (Fig. 8)
4. Position brush housing under raised hopper.
1. Position sweeper on a level surface with dump hop-
per empty and lowered. Have sweeper attached to tow-
ing vehicle, apply vehicle parking brake, stop engine
and remove key from the ignition switch. Chock sweep-
er wheels to prevent sweeper from moving.
5. Slowly lower hopper to position saddle frame to
brush housing (see Servicing the Brush Housing in this
section).
6. Secure pivot mounts to frame with cap screws (item
2)andlocknuts(item3). Torquelocknutsfrom94to116
ft--lb (128 to 157 N--m).
2. Remove hydraulic brush motor from brush housing
(see Hydraulic Brush Motor Removal in the Service and
Repairs section of Chapter 3 -- Hydraulic System).
7. Install hydraulic brush motor to brush housing (see
Hydraulic Brush Motor Installation in the Service and
RepairssectionofChapter3 -- HydraulicSystem). Make
sure that coupling jaws have a gap between coupler jaw
valleys from 0.830” to 0.930” (21.1 to 23.6 mm). Apply
Loctite #242 (or equivalent) to threads of coupling set
screws. Secure coupling jaws to motor shaft and brush
shaft by torquing set screws from 61 to 85 in--lb (6.9 to
9.6 N--m) (Fig. 9).
3. Support brush housing to prevent it from shifting.
4. Remove cap screws (item 2) and lock nuts (item 3)
that secure pivot mounts to frame.
5. Follow Servicing the Brush Housing procedure in
thissectiontoremovebrushhousingfromsaddleframe.
6. After raising hopper and placing lift cylinder stop, re-
trieve brush housing from under machine.
8. Lubricate grease fittings on pivot mounts.
7. Remove cap screw (item 9), flat washer (item 10)
and hardened spacer (item 11) from front brush housing
pin.
Antiseize
Antiseize
Lubricant
Lubricant
4
3
2
8. Remove pivot mounts from brush housing. Locate
and retrieve thrust washers (item 7) from between pivot
mount and brush housing.
1
9. If necessary, remove flange bushings from pivot
mounts. Discard bushings if removed.
5
6
3
Installation (Fig. 8)
7
61 to 85 in--lb
(6.9 to 9.6 N--m)
1. If flange bushings were removed from pivot mounts,
press new bushings fully into mounts.
Loctite #242
2. Place thrust washer and then pivot mount on both
brush housing pins.
Figure 9
1. Hydraulic brush motor
2. Key
5. Brush assembly
6. Square key
3. Coupling jaw
4. Coupling spider
7. Set screw (2 per jaw)
3. Secure front pivot mount with hardened spacer (item
11), flat washer (item 10) and cap screw (item 9).
Pro Sweep
Page 5 -- 13
Chassis
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Roller
Antiseize
Lubricant
3
Antiseize
Lubricant
1
2
2
15
14
5
6
7
8
RIGHT
13
12
5
4
9
11
FRONT
10
125 to 165 in--lb
(14.2 to 18.6 N--m)
Loctite #242
Figure 10
1. Roller scraper
2. Carriage screw (8 used)
3. Roller
4. Brush housing
5. Flange nut (10 used)
6. Bearing flange (2 used per bearing)
7. Locking collar (2 used)
8. Set screw (1 per collar)
9. Bearing (2 used)
11. Flat washer (2 used per bearing)
12. Roller adjustment plate (2 used)
13. Carriage screw (2 used per bearing)
14. Adjuster key (2 used)
10. Lock nut (2 used per bearing)
15. Carriage screw (2 used)
Chassis
Page 5 -- 14
Pro Sweep
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Removal (Fig. 10)
Installation (Fig. 10)
1. Position sweeper on a level surface with dump hop-
per empty and lowered. Have sweeper attached to tow-
ing vehicle, apply vehicle parking brake, stop engine
and remove key from the ignition switch. Chock sweep-
er wheels to prevent sweeper from moving.
1. Clean roller shaft ends and apply antiseize lubricant
to shaft ends. Place adjustment plate, bearing flanges,
bearing and locking collar onto each end of roller shaft.
Do not tighten set screws in locking collars.
2. Secure bearing flanges to roller adjustment plate
with carriage screws (item 13), flat washers (item 11)
and lock nuts (item 10).
2. Removeflangenutsandcarriagescrewsthatsecure
roller scraper to roller adjustment plates. Remove roller
scraper from machine.
3. Position roller assembly under raised hopper.
IMPORTANT: When fully lowered, the sweeper is
supported by the roller. To service the roller, raise
the sweeper slightly before carefully loosening fas-
teners that secure roller assembly.
4. Slowly lower hopper to position roller assembly to
housing (see Servicing the Brush Housing in this sec-
tion).
5. Secureadjustmentplatesand adjusterkeys tobrush
housing with carriage screws and flange nuts using
location noted during removal.
CAUTION
6. Center roller between bearings.
To prevent personal injury, make sure that roller
is supported as it is removed from the machine.
Roller weighs approximately 80 pounds (36.3
kg).
NOTE: Normal roller rotation is counter--clockwise as
viewed from left side of sweeper.
7. Using a punch and hammer, rotate locking collars in
the direction of normal roller rotation to tighten collars.
3. Support roller to prevent it from shifting.
4. Notelocationofrolleradjustmentplatesandadjuster
keys for reassembly purposes.
8. Apply Loctite #242 (or equivalent) to threads of set
screws(item8).Installsetscrewsintocollarsandtorque
from125to165in--lb(14.2to18.6N--m)tosecurelock-
ing collars to roller shaft.
5. Remove flange nuts that secure roller adjustment
plates and adjuster keys to brush housing.
9. Check that roller is free to rotate and no binding ex-
ists.
6. Refer to Brush Housing Service in this section for
procedure to remove roller assembly from brush hous-
ing.
10.Position roller scraper to machine. Install carriage
screws and flange nuts that secure roller scraper to roll-
er adjustment plates.
7. After raising hopper and placing lift cylinder stop, re-
trieve roller assembly from under machine.
11.Check roller height and roller scraper clearance and
adjust if necessary (see Operator’s Manual).
8. To remove bearings from roller:
A. Remove set screw (item 8) that secures locking
collar to roller shaft.
NOTE: Normal roller rotation is counter--clockwise
as viewed from left side of sweeper.
3
B. Using a punch and hammer, rotate locking collar
(item 7) in the oppositedirection ofnormal rollerrota-
tion to loosen collar.
2
C. Remove carriage screws (item 13), flat washers
(item 11) and lock nuts (item 10) that secure bearing
flanges to roller adjustment plate.
1
D. Slide bearing flanges, locking collar and bearing
from roller.
Figure 11
1. Roller shaft
3. Locking collar
2. Bearing flange
Pro Sweep
Page 5 -- 15
Chassis
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Frame Assembly
18
4
9
3
4
2
RIGHT
17
16
17
15
FRONT
3
4
15
9
14
2
2
6
2
12
1
4
13
7
8
4
5
10
11
Figure 12
1. Main frame
7. Cap screw (2 used)
8. Pivot pin (2 used)
9. Hardened spacer (2 used)
10. Pivot saddle
11. Carriage bolt
13. Lock nut
2. Cap screw (4 used)
3. Pivot pin (2 used)
4. Flange nut (6 used)
5. Pitch frame
14. Saddle frame
15. Cap screw
16. Lift cylinder
17. Lock nut
18. Link
6. Pivot pin
12. Pivot pin
Disassembly (Fig. 12)
Assembly (Fig. 12)
1. Position sweeper on a level surface with dump hop-
per empty and lowered. Have sweeper attached to tow-
ing vehicle, engage vehicle parking brake, stop engine
and remove key from the ignition switch. Chock sweep-
er wheels to prevent sweeper from moving.
1. Assemble frame using Figure 12 as a guide.
2. Lubricate pivot point grease fittings.
NOTE: If lift cylinder is to be removed, see Lift Cylinder
Removal in the Service and Repairs section of Chapter
3 -- Hydraulic System.
2. Disassemble frame as needed using Figure 12 as a
guide.
Chassis
Page 5 -- 16
Pro Sweep
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Chapter 6
Electrical Diagrams
Table of Contents
ELECTRICAL SCHEMATIC
Electrical Schematic . . . . . . . . . . . . . . . . . . . . . . . . . 3
CIRCUIT DRAWINGS
Brush Circuit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Sweeper Raise Circuit (To Transport Height) . . . . 5
Sweeper Raise Circuit (To Turn Around Height) . 6
Hopper Dump Circuit . . . . . . . . . . . . . . . . . . . . . . . . 7
Sweeper Lower Circuit (Initiation) . . . . . . . . . . . . . . 8
Sweeper Lower Circuit . . . . . . . . . . . . . . . . . . . . . . . 9
Sweeper Offset Circuit . . . . . . . . . . . . . . . . . . . . . . 10
WIRE HARNESS DRAWINGS
Power Wire Harness . . . . . . . . . . . . . . . . . . . . . . . . 11
Main Wire Harness Drawing . . . . . . . . . . . . . . . . . 12
Main Wire Harness Diagram . . . . . . . . . . . . . . . . . 13
Pro Sweep
Page 6 -- 1
Electrical Diagrams
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This page is intentionally blank.
Electrical Diagrams
Page 6 -- 2
Pro Sweep
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CAP
NOTE: NO OTHER MACHINE FUNCTIONS
WILL WORK WHEN LEARN SHUNT
WIRES ARE CONNECTED.
CAP
CONTROL MODULE
Pro Sweep
Electrical Schematic
Relays are shown as de-energized
All ground wires are black
Page 6 -- 3
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CONTROL MODULE
Model: 07066
Tested to Comply
With FCC Standards
FORHOMEOROFFICEUSE
N
1
6
2
5
Canada
3575APFB1
Madein U.S.A.
LED’S
ILLUMINATED
CAP
CONTROL MODULE
ON
ON
115 -9062
REMOTE TRANSMITTER
NO
BUTTON
PRESSED
Electrical Power Exists to Pro Sweep.
Sweeper Is Below Transport Height Position.
(ENERGIZED)
Brush Will Rotate if Tow Vehicle Hydraulics
Are Engaged.
(ENERGIZED)
Note: Other Circuits Are Completed During
Brush Operation. See Chapter 4 -- Electrical
System for Additional Circuit Information.
SWITCH CLOSED (LED ILLUMINATED)
WHEN SWEEPER HEAD IS BELOW THE
TRANSPORT HEIGHT
Pro Sweep
Brush Circuit
Power Current
Control Current
Page 6 -- 4
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CONTROL MODULE
Model: 07066
Testey
ON
FORHOMEOROFFICEUSE
Withdards
N1625
Canada
3575APFB1
Made in U.S.A.
LED’S
ILLUMINATED
CAP
CONTROL MODULE
ON
(ENERGIZED)
ON
ON
2
(ENERGIZED)
(SWITCH CLOSED)
(SWITCH LED ILLUMINATED)
REMOTE TRANSMITTER
(ENERGIZED)
PRESSED
(ENERGIZED)
Electrical Power Exists to Pro Sweep.
Sweeper Directly Behind Tow Vehicle (Can Raise to
Transport Height Position).
(SWITCH CLOSED)
(SWITCH LED ILLUMINATED)
SWEEPER
UP BUTTON
PRESSED
AND HELD
Remote Transmitter Sweeper Up Button Pressed.
Sweeper Will Raise to Transport Height if Tow
Vehicle Hydraulics Are Engaged.
Pro Sweep
Sweeper Raise Circuit (To Transport Height)
Power Current
Control Current
Page 6 -- 5
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CONTROL MODULE
Model: 07066
Testey
ON
Withards
FORHO
MEORFFICEUSE
N1625
Canada
3575APFB1
Made in U.S.A.
LED’S
ILLUMINATED
CAP
CONTROL MODULE
ON
ON
(ENERGIZED)
ON
2
REMOTE TRANSMITTER
(SWITCH CLOSED)
(SWITCH LED ILLUMINATED)
(ENERGIZED)
PRESSED
(ENERGIZED)
Electrical Power Exists to Pro Sweep.
Sweeper in Off--Set Position (Can Raise to
Turn Around Height Position).
SWEEPER
UP BUTTON
PRESSED
AND HELD
Remote Transmitter Sweeper Up Button Pressed.
Sweeper Will Raise to Turn Around Height if
Tow Vehicle Hydraulics Are Engaged.
Pro Sweep
Sweeper Raise Circuit (To Turn Around Height)
Power Current
Control Current
Page 6 -- 6
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CONTROL MODULE
Model: 07066
TestedtoComply
WithFCCStandards
FOR HOME OR OFFICE US E
(ENERGIZED)
N1625
Canada
3575APFB1
Made in U.S.A.
LED’S
ILLUMINATED
CAP
CONTROL MODULE
ON
(ENERGIZED)
ON
ON
ON
2
(ENERGIZED)
(SWITCH CLOSED)
(SWITCH LED ILLUMINATED)
REMOTE TRANSMITTER
(ENERGIZED)
HOPPER
DUMP BUTTON
PRESSED
AND HELD
AFTER DUMP
SEQUENCE
Electrical Power Exists to Pro Sweep.
Sweeper Directly Behind Tow Vehicle and In
Transport Height Position.
Remote Transmitter Dump Sequence Entered and
Then Hopper Dump Button Pressed.
PRESSED
Hopper Dump Will Occur if Tow Vehicle Hydraulics
Are Engaged.
Pro Sweep
Hopper Dump Circuit
Power Current
Control Current
Page 6 -- 7
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CONTROL MODULE
Model: 07066
TestedtoComply
WithFCCStandards
FORHOMEOROFFICEUSE
N
1
6
2
5
Canada
357
Madein U.S.A.
ON
LED’S
ILLUMINATED
(ENERGIZED)
CAP
(ENERGIZED)
CONTROL MODULE
ON
(ENERGIZED)
ON
ON
2
REMOTE TRANSMITTER
SWEEPER
DOWN
BUTTON
PRESSED
PRESSED
Electrical Power Exists to Pro Sweep.
Remote Transmitter Sweeper Down Button
Pressed.
Sweeper Will Lower if Tow Vehicle Hydraulics
Are Engaged.
Pro Sweep
Sweeper Lower Circuit (Initiation)
Power Current
Control Current
Page 6 -- 8
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CONTROL MODULE
Model: 07066
TestedtoComply
WithFCCStandards
FORHOMEOROFFICEUSE
N
1
6
2
5
Canada
3575APFB1
Madein U.S.A.
LED’S
ILLUMINATED
(ENERGIZED)
CAP
(ENERGIZED)
CONTROL MODULE
ON
(ENERGIZED)
ON
115 -9062
REMOTE TRANSMITTER
NO
BUTTONS
PRESSED
Electrical Power Exists to Pro Sweep.
Remote Transmitter Sweeper Down Button
Pressed and Released. Latched Relays
Keep Circuit Energized.
Sweeper Will Lower if Tow Vehicle Hydraulics
Are Engaged.
NOTE: TO DE--ENERGIZE THE HOPPER DOWN (SV2)
SOLENOID, THE REMOTE TRANSMITTER STOP OR
SWEEPER UP BUTTON CAN BE PRESSED. EITHER OF
THESE INPUTS WILL ENERGIZE THE DOWN LATCH
RELEASE RELAY CAUSING THE DOWN FLOAT LATCH
RELAY AND HOPPER DOWN (SV2) SOLENOID TO
DE--ENERGIZE.
Pro Sweep
Sweeper Lower Circuit
Power Current
Control Current
Page 6 -- 9
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CONTROL MODULE
Model: 07066
(ENERGIZED)
TestedtoComply
WithFCCStandards
FORHOMEOROFFICEUSE
N1625
Canada
3575APFB1
LED’S
ILLUMINATED
(SWITCH CLOSED)
(ENERGIZED)
(SWITCH LED ILLUMINATED)
ON
CAP
CONTROL MODULE
ON
ON
ON
2
REMOTE TRANSMITTER
OFFSET
RIGHT BUTTON
PRESSED
AND HELD
PRESSED
Electrical Power Exists to Pro Sweep.
Remote Transmitter Offset Right Button
Pressed.
Sweeper Will Offset to the Right if Tow
Vehicle Hydraulics Are Engaged.
Pro Sweep
Sweeper Offset Circuit
(Offset Right Shown)
Power Current
Control Current
Page 6 -- 10
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BLUE
BLACK
RED
Pro Sweep
Power Wire Harness
Page 6 -- 11
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CONTROL
MODULE
CONTROL
MODULE
Pro Sweep
Main Wire Harness Drawing
Page 6 -- 12
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RED
BLACK
BLUE
GRAY
BLACK
PINK
PINK
ORANGE
BLACK
BLACK
BLACK
BLACK
ORANGE
YELLOW
WHITE
PINK
WHITE
PINK
CONTROL
MODULE
BLACK
BLUE
PINK
BLACK
BLUE
WHITE
ORANGE
BLACK
TAN
WHITE
BLACK
WHITE
GRAY
PINK
GRAY
PINK
RED
ORANGE
DUMP
BEEPER
Pro Sweep
Main Wire Harness Diagram
Page 6 -- 13
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