Owner’s Manual & Safety Instructions
Save This Manual Keep this manual for the safety warnings and precautions, assembly,
operating, inspection, maintenance and cleaning procedures. Write the product’s serial number in the
back of the manual near the assembly diagram (or month and year of purchase if product has no number).
Keep this manual and the receipt in a safe and dry place for future reference.
REV 14j
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When unpacking, make sure that the product is intact
and undamaged. If any parts are missing or broken,
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©
®
Copyright 2009 by Harbor Freight Tools . All rights reserved.
No portion of this manual or any artwork contained herein may be reproduced in
any shape or form without the express written consent of Harbor Freight Tools.
Diagrams within this manual may not be drawn proportionally. Due to continuing
improvements, actual product may differ slightly from the product described herein.
Tools required for assembly and service may not be included.
Read this material before using this product.
Failure to do so can result in serious injury.
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medication. A moment of inattention
while operating the tool increases the
risk of injury to persons.
exposure to high intensity noise is
able to cause hearing loss.
Tool use and care
b. Dress properly. Do not wear loose
clothing or jewelry. Contain long
hair. Keep hair, clothing, and
gloves away from moving parts.
Loose clothes, jewelry, or long hair
increases the risk of injury to persons
as a result of being caught in moving
parts.
a. Use clamps or another practical
way to secure and support the
workpiece to a stable platform.
Holding the work by hand or against
the body is unstable and is able to
lead to loss of control.
b. Do not force the tool. Use the
correct tool for the application. The
correct tool will do the job better and
safer at the rate for which the tool is
designed.
c. Avoid unintentional starting.
Be sure the switch is off before
connecting to the air supply.
Do not carry the tool with your finger
on the switch or connect the tool to
the air supply with the switch on.
c. Do not use the tool if the Trigger
switch does not turn the tool on or
off. Any tool that cannot be controlled
with the Trigger is dangerous and
must be repaired.
d. Remove adjusting keys and
wrenches before turning the tool
on. A wrench or a key that is left
attached to a rotating part of the tool
increases the risk of personal injury.
d. Disconnect the tool from the
air source before making
e. Do not overreach. Keep proper
footing and balance at all times.
Proper footing and balance
any adjustments, changing
accessories, or storing the tool.
Such preventive safety measures
reduce the risk of starting the tool
unintentionally. Turn off and detach
the air supply, safely discharge any
residual air pressure, and release the
throttle and/or turn the Trigger to its
off position before leaving the work
area.
enables better control of the tool in
unexpected situations.
f.
Use safety equipment. A
dust mask, non-skid safety
shoes and a hard hat must
be used for the applicable
conditions. Wear heavy-duty work
gloves during use.
e. Store the tool when it is idle out
of reach of children and other
untrained persons. A tool is
dangerous in the hands of untrained
users.
g.
h.
Always wear eye
protection. Wear ANSI-
approved safety goggles.
Always wear hearing
protection when using
the tool. Prolonged
f.
Maintain the tool with care.
A properly maintained tool is easier to
control.
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g. Check for misalignment or binding b. Never use oxygen, carbon dioxide,
of moving parts, breakage of
parts, and any other condition
that affects the tool’s operation.
If damaged, have the tool serviced
before using. Many accidents are
caused by poorly maintained tools.
There is a risk of bursting if the tool is
damaged.
combustible gases or any bottled
gas as an air source for the tool.
Such gases are capable of explosion
and serious injury to persons.
SAVE THESE
INSTRUCTIONS.
h. Use only accessories that are
identified by the manufacturer for
the specific tool model. Use of an
accessory not intended for use with
the specific tool model, increases the
risk of injury to persons.
Symbol Definitions
Symbol
Property or statement
No-load speed
n
o
Revolutions or reciprocation per
minute
.../min
PSI
Pounds per square inch of pressure
Foot-pounds of torque
Service
a. Tool service must be performed
ft-lb
only by qualified repair personnel.
Blows per minute
BPM
CFM
SCFM
NPT
b. When servicing a tool, use only
identical replacement parts. Use
only authorized parts.
Cubic Feet per Minute flow
Cubic Feet per Minute flow at
standard conditions
c. Use only the lubricants supplied
with the tool or specified by the
manufacturer.
National pipe thread, tapered
National pipe thread, straight
NPS
Air source
WARNING marking concerning Risk
of Eye Injury. Wear ANSI-approved
eye protection.
a.
Never connect to an air
source that is capable of
WARNING marking concerning Risk
of Hearing Loss. Wear hearing
protection.
exceeding 115 PSI. Over
pressurizing the tool may
cause bursting, abnormal operation,
breakage of the tool or serious injury
to persons. Use only clean, dry,
regulated compressed air at the rated
pressure or within the rated pressure
range as marked on the tool. Always
verify prior to using the tool that the
air source has been adjusted to the
rated air pressure or within the rated
air-pressure range.
WARNING marking concerning Risk
of Respiratory Injury. Wear NIOSH-
approved dust mask/respirator.
WARNING marking concerning Risk
of Explosion.
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Vibration Precautions
Specific Safety Instructions
This tool vibrates during use.
Repeated or long-term exposure to
vibration may cause temporary or
permanent physical injury, particularly to
the hands, arms and shoulders. To reduce
the risk of vibration-related injury:
1. The warnings and precautions
discussed in this manual cannot
cover all possible conditions and
situations that may occur. It must
be understood by the operator that
common sense and caution are
factors which cannot be built into this
product, but must be supplied by the
operator.
1. Anyone using vibrating tools regularly
or for an extended period should
first be examined by a doctor and
then have regular medical check-
ups to ensure medical problems are
not being caused or worsened from
use. Pregnant women or people
who have impaired blood circulation
to the hand, past hand injuries,
nervous system disorders, diabetes,
or Raynaud’s Disease should not use
this tool. If you feel any symptoms
related to vibration (such as tingling,
numbness, and white or blue fingers),
seek medical advice as soon as
possible.
2. WARNING: The brass components
of this product contain lead, a
chemical known to the State of
California to cause cancer and birth
defects or other reproductive harm.
(California Health & Safety Code
§ 25249.5, et seq.)
3. Only use with accessories rated to
handle the forces exerted by this tool
during operation. Other accessories
not designed for the forces generated
may break and forcefully launch
pieces.
2. Do not smoke during use. Nicotine
reduces the blood supply to the
hands and fingers, increasing the risk
of vibration-related injury.
4. Attach all accessories properly to the
tool before connecting the air supply.
A loose accessory may detach or
break during operation.
3. Wear suitable gloves to reduce the
vibration effects on the user.
5. Obey the manual for the air
compressor used to power this tool.
4. Use tools with the lowest vibration
when there is a choice.
6. Install an in-line shutoff valve to allow
immediate control over the air supply
in an emergency, even if a hose is
ruptured.
5. Include vibration-free periods each
day of work.
6. Grip tool with both hands as lightly
as possible (while still keeping safe
control of it). Let the tool do the work.
7. Use this tool with both hands only.
Using tools with only one hand can
result in loss of control.
7. To reduce vibration, maintain tool as
explained in this manual. If abnormal
vibration occurs, stop immediately.
8. Do not lay the tool down until it has
come to a complete stop. Moving
parts can grab the surface and pull
the tool out of your control.
SAVE THESE INSTRUCTIONS.
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SPECIFICATIONS
Male
Connector
Male
Connector
Maximum Air Pressure 115 PSI
Tool
Air Inlet
1/2″ -14 NPT
Quick
Coupler
1″ Square Drive
with 6″ extension
Air Hose
on Reel
Drive Size
375 BPM (Blows Per
Minute)
Maximum Speed*
Average Air
Consumption
Valve
Oiler
Filter
16.5 CFM @ 90 PSI
250-1250 ft-lb
Air
Compressor
Torque Range
* Maximum speed at stated maximum air pressure.
Excess air pressure is hazardous and may cause the
tool to exceed stated maximum speed.
Regulator with
Pressure Gauge
Recommended Min. Air Hose: 1/2″ (Not Supplied)
Recommended Air Line Components
INITIAL TOOL SET UP/
ASSEMBLY
1. Incorporate a filter, regulator with
pressure gauge, oiler, in-line shutoff
valve, and quick coupler for best
service, as shown in the diagram
above. An in-line shutoff ball
valve is an important safety device
because it controls the air supply
even if the air hose is ruptured.
The shutoff valve should be a ball
valve because it can be closed
quickly.
Read the ENTIRE IMPORTANT
SAFETY INFORMATION
section at the beginning of this
manual including all text under
subheadings therein before set
up or use of this product.
Note: For additional information regarding
the parts listed in the following pages,
refer to the Assembly Diagram near
the end of this manual.
Note: If an automatic oiler system is not
used, add a few drops of Pneumatic
Tool Oil to the airline connection
before operation. Add a few more
drops after each hour of continual
use.
• This air tool may be shipped with a
protective plug covering the air inlet.
Remove this plug before set up.
Air Supply
2. Attach an air hose to the
compressor’s air outlet. Connect
the air hose to the air inlet of the
tool. Other components, such as
a connector and quick coupler, will
make operation more efficient, but
are not required.
TO PREVENT
EXPLOSION:
Use only clean, dry, regulated,
compressed air to power this
tool. Do not use oxygen,
carbon dioxide, combustible
gases, or any other bottled
gas as a power source for this
tool.
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discharge the tool in a safe fashion
after disconnecting to ensure that the
tool is disconnected and unpowered.
WARNING! TO PREVENT SERIOUS
INJURY FROM ACCIDENTAL
OPERATION:
Do not install a female quick
coupler on the tool. Such a coupler
contains an air valve that will allow
the air tool to retain pressure and
operate accidentally after the air
supply is disconnected.
OPERATING INSTRUCTIONS
Read the ENTIRE IMPORTANT
SAFETY INFORMATION
section at the beginning of this
manual including all text under
subheadings therein before set
up or use of this product.
Note: Air flow, and therefore tool
performance, can be hindered by
undersized air supply components.
Inspect tool before use, looking
for damaged, loose, and
missing parts. If any problems
are found, do not use tool until
repaired.
3. The air hose must be long enough
to reach the work area with enough
extra length to allow free movement
while working.
4. Close the in-line safety valve between
the compressor and the tool.
Tool Set Up
TO PREVENT
SERIOUS INJURY:
5. Turn on air compressor according to
manufacturer’s directions and allow it
to build up pressure until it cycles off.
Do not adjust or tamper with
any control or component in a
way not specifically explained
within manual. Improper
adjustment can result in tool
failure or other serious
hazards.
6. Adjust the air compressor’s output
regulator so that the air output is
enough to properly power the tool,
but the output will not exceed the
tool’s maximum air pressure at any
time. Adjust the pressure gradually,
while checking the air output gauge
to set the right pressure range.
Work Piece and Work Area Set Up
1. Designate a work area that is clean
and well-lit. The work area must not
allow access by children or pets to
prevent distraction and injury.
7. Inspect the air connections for leaks.
Repair any leaks found.
8. If the tool will not be used at this time,
release the Trigger, close the shut-off
valve, press the Trigger to discharge
trapped line pressure, and detach air
supply hose from the air supply.
2. Route air hose along a safe route to
reach work area without creating a
tripping hazard or exposing air hose
to possible damage. Also avoid
sharp bends and do not place items
on hose during use.
Note: Residual air pressure should not be
present after the tool is disconnected
from the air supply. However, it is a
good safety measure to attempt to
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3. The air hose must be long enough
to reach the work area with enough
extra length to allow free movement
while working.
7. Hold the D-Handle firmly and place
other hand around Frame Handle
(50). Gently squeeze the Trigger (15).
8. Place socket (not included) over
desired nut, hold handle firmly and
gently squeeze the Trigger.
4. There must not be hazardous objects
(such as utility lines) nearby that will
present a hazard while working.
9. If tool requires more force to
accomplish task in Forward or
Reverse setting, verify that the tool
receives sufficient, unobstructed
airflow (CFM) and increase the
pressure (PSI) output of regulator up
to maximum air pressure rating of the
tool.
General Operating Instructions
1. WARNING! Use only 1″ Drive Impact
type sockets (not supplied).
2. For added stability, use wrench (not
included) to attach D-Handle (47)
to side of Hammer Case (2) using
Screws (48) and Washers (49).
CAUTION! TO PREVENT TOOL
AND ACCESSORY FAILURE,
RESULTING IN INJURY:
Do not exceed tool’s maximum air
pressure rating (115 PSI).
If tool still does not have sufficient
force at maximum pressure and
sufficient airflow, then a larger tool
may be required.
3. If an automatic oiler is not used, add
a few drops of Pneumatic Tool Oil
to the airline connection before use.
Add a few drops more after each
hour of continual use.
4. Push and snap socket (not included)
onto Anvil (10).
10. When the nut is tightened or
loosened, release the Trigger. Use a
torque wrench to check the torque of
the tightened nut.
5. This Impact Wrench can be used
in either Forward or Reverse
direction. To operate in Forward,
turn the Regulator Knob (33) under
the housing to the desired Forward
speed.
11. To prevent accidents, turn off tool,
detach air supply, safely discharge
any residual air pressure in tool, and
release Trigger after use. Clean
external surfaces of tool with clean,
dry cloth, and apply a thin coat of tool
oil to the driver end. Store indoors
out of children’s reach.
NOTE: There are three torque settings
for the Forward direction. To tighten,
place the socket over the hex nut you
wish to tighten.
6. For Reverse, turn the Regulator Knob
to the desired Reverse speed.
NOTE: There are three torque settings
for the Reverse direction. To loosen,
set the Regulator Knob to one of the
Reverse settings.
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Note: These procedures are in addition to
the regular checks and maintenance
explained as part of the regular
USER-MAINTENANCE
INSTRUCTIONS
operation of the air-operated tool.
Procedures not specifically
explained in this manual
must be performed only by a
qualified technician.
1. Daily - Air Supply Maintenance:
Every day, perform maintenance
on the air supply according to
the component manufacturers’
instructions. The lubricator’s oil
level needs to be maintained and
the moisture filter must be regularly
drained. Performing routine
maintenance on the air supply will
allow the tool to operate more safely
and will also reduce wear on the tool.
TO PREVENT
SERIOUS INJURY
FROM ACCIDENTAL
OPERATION: Turn off tool,
detach air supply, safely
discharge any residual air
pressure in tool, and release
Trigger before performing any
inspection, maintenance, or
cleaning procedures.
2. Quarterly (every 3 months) -
Tool Disassembly, Cleaning,
and Inspection: Have the internal
mechanism cleaned, inspected, and
lubricated by a qualified technician.
TO PREVENT SERIOUS
INJURY FROM TOOL
FAILURE: Do not use
damaged equipment. If
abnormal noise, vibration,
or leaking air occurs, have
problem corrected before
further use.
3. Store Impact Wrench in clean, dry
and safe location out of reach of
children.
TO PREVENT EXPLOSION:
Lubricate tool only with
specified lubricants.
Lubricate the air inlet
using only pneumatic tool
oil. Lubricate the internal
mechanism using only
white lithium grease. Other
lubricants may damage the
mechanism and may be
highly flammable, causing an
explosion.
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Troubleshooting
Problem
Possible Causes
Likely Solutions
Decreased output. 1. Not enough air pressure and/ 1. Check for loose connections and make sure
or air flow.
that air supply is providing enough air flow
(CFM) at required pressure (PSI) to the
tool’s air inlet. Do not exceed maximum air
pressure.
2. Obstructed trigger.
2. Clean around trigger to ensure free
movement.
3. Incorrect lubrication or not
enough lubrication.
3. Lubricate using air tool oil and grease
according to directions.
4. Blocked air inlet screen (if
equipped).
4. Clean air inlet screen of buildup.
5. Air leaking from loose housing, 5. Make sure housing is properly assembled
hose or connections.
and tight. Repair hose/connection air leaks.
6. Mechanism contaminated.
6. Have qualified technician clean and lubricate
mechanism. Install in-line filter in air supply
as stated in Initial Set Up: Air Supply.
7. Vane wear or damage.
1. Incorrect lubrication or not
enough lubrication.
7. Replace all vanes.
1. Lubricate using air tool oil and grease
according to directions.
Housing heats
during use.
2. Worn parts.
2. Have qualified technician inspect internal
mechanism and replace parts as needed.
1. Check for incorrect alignment and uneven
gaps. If cross-threaded, disassemble and
replace damaged parts before use.
Severe air
leakage.
1. Cross-threaded housing
components.
2. Loose housing.
2. Tighten housing assembly. If housing cannot
tighten properly, internal parts may be
misaligned.
3. Damaged valve or housing.
3. Replace damaged components.
4. Dirty, worn or damaged valve. 4. Clean or replace valve assembly.
Follow all safety precautions whenever diagnosing or servicing the tool.
Disconnect air supply before service.
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PARTS LIST
Part
Description
Q’ty
Part
Description
Q’ty
1
1
1
1
1
1
1
1
1
1
1
6
1
1
1
2
3
4
5
6
7
8
9
Oil Seal
1
28 Spring
Hammer Case
Screw
Spring Washer
Front Gasket
Hammer Case Bushing
Side Plate
1
4
4
1
1
1
1
1
1
1
1
1
29 Regulator
30 Spring Pin
31 O-Ring
32 Spring Pin
33 Regulator Knob
34 Reverse Valve Bushing
35 Spring Pin
36 Rear Gasket
37 Ball Bearing
38 Rear End Plate
39 Rotor Blade
40 Spring Pin
41 Rotor
Retainer Ring
O-ring
10 Anvil
11 Pin Hammer
12 Cam
13 Hammer Cage
14 Housing
1
15 Trigger
1
1
1
1
1
1
1
1
42 Spring Pin
43 Cylinder
44 Spring Pin
45 Front End Plate
46 Ball Bearing
47 D-Handle
1
1
1
1
1
1
4
4
16 Spring Pin
17 Needle Pin
18 O-Ring
19 Screw
20 Throttle Pin
21 Valve Stem
22 O-Ring
48 Screw
49 Washers
23 Throttle Valve
24 Throttle Spring
25 O-Ring
1
1
1
50 Frame Handle
51 Spring Washer
52 Screw
1
4
4
26
Air Inlet
1
53 Oiling
1
27 Steel Ball
1
Record Product’s Serial Number Here:
Note: If product has no serial number, record month and year of purchase instead.
Note: Some parts are listed and shown for illustration purposes only, and are not
available individually as replacement parts.
PLEASE READ THE FOLLOWING CAREFULLY
THE MANUFACTURER AND/OR DISTRIBUTOR HAS PROVIDED THE PARTS LIST AND ASSEMBLY
DIAGRAM IN THIS MANUAL AS A REFERENCE TOOL ONLY. NEITHER THE MANUFACTURER OR
DISTRIBUTOR MAKES ANY REPRESENTATION OR WARRANTY OF ANY KIND TO THE BUYER THAT
HE OR SHE IS QUALIFIED TO MAKE ANY REPAIRS TO THE PRODUCT, OR THAT HE OR SHE IS
QUALIFIED TO REPLACE ANY PARTS OF THE PRODUCT. IN FACT, THE MANUFACTURER AND/
OR DISTRIBUTOR EXPRESSLY STATES THAT ALL REPAIRS AND PARTS REPLACEMENTS SHOULD
BE UNDERTAKEN BY CERTIFIED AND LICENSED TECHNICIANS, AND NOT BY THE BUYER. THE
BUYER ASSUMES ALL RISK AND LIABILITY ARISING OUT OF HIS OR HER REPAIRS TO THE
ORIGINAL PRODUCT OR REPLACEMENT PARTS THERETO, OR ARISING OUT OF HIS OR HER
INSTALLATION OF REPLACEMENT PARTS THERETO.
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ASSEMBLY DIAGRAM
90 Day Warranty
Harbor Freight Tools Co. makes every effort to assure that its products meet high quality and durability
standards, and warrants to the original purchaser that this product is free from defects in materials
and workmanship for the period of 90 days from the date of purchase. This warranty does not apply to
damage due directly or indirectly, to misuse, abuse, negligence or accidents, repairs or alterations outside
our facilities, criminal activity, improper installation, normal wear and tear, or to lack of maintenance. We
shall in no event be liable for death, injuries to persons or property, or for incidental, contingent, special
or consequential damages arising from the use of our product. Some states do not allow the exclusion
or limitation of incidental or consequential damages, so the above limitation of exclusion may not apply
to you. THIS WARRANTY IS EXPRESSLY IN LIEU OF ALL OTHER WARRANTIES, EXPRESS OR
IMPLIED, INCLUDING THE WARRANTIES OF MERCHANTABILITY AND FITNESS.
To take advantage of this warranty, the product or part must be returned to us with transportation charges
prepaid. Proof of purchase date and an explanation of the complaint must accompany the merchandise.
If our inspection verifies the defect, we will either repair or replace the product at our election or we may
elect to refund the purchase price if we cannot readily and quickly provide you with a replacement. We will
return repaired products at our expense, but if we determine there is no defect, or that the defect resulted
from causes not within the scope of our warranty, then you must bear the cost of returning the product.
This warranty gives you specific legal rights and you may also have other rights which vary from state to
state.
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