Air To o ls
ITEM# 1961202
1/ 2" Variable SpeedImpact Wrench
USER' S MANUAL
Read carefully and understandRULES FOR SAFEOPERATION and instructions
before operating. Failure to follow the safety rules and other basic safety
precautions may result in serious personal injury.
Made in China
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10.Use compressed air only. Clean, dry,regulated compressed air at 90 PSI. Never use
oxygen, carbon dioxide, combustible gases, or any other bottled gas as a power source
for this tool.
11.Always disconnect air supplywhen this toolis not beingused.
NOTE: The warnings, cautions, and instructions discussed in this instruction manual
cannot cover all possible conditions and situations that may occur. It must be
understood bythe operator that common sense and caution are factors that cannot
be built into this product but must be supplied by the operator.
NOTE: READ ALL INSTRUCTIONS BEFOREUSING THIS PRODUCT
OPERATION
Set Up
Fig. 1
!
WARNING!
This impact wrench supplies powerful torque and it designed to be operated with two
hands. Failure to operate the Impact wrench with two hands may result in serious
injury.
1.You will need to prepare a 1/ 4"air connector (not included) to connect to the air
inlet on the tool. First, wrap the 1/ 4" airconnector with pipe thread seal tape (not
included) before threadingit into the inlet. Connect the 3/ 8" ID airsource hose (not
included) to a quick-disconnect coupler (not included) and then to the tool.
2.Set the air pressure on your compressor to 90 PSI. Do not exceed the recommended
air pressure of90 PSI.
3.Check the air connection forleaks.
4.Disconnect from the air hose until next instructed to reconnect.
Note: Turn offyour air compressorand disconnect the air hose when you are changing
sockets. After you attach the socket (not included), attach the air hose and turn the air
compressor on.
i.Select the appropriate size 1/ 2"socket foryour needs.
ii.Push and snap the socket onto the anvil.
iii.Tightening
The max. workingtorque ofthe impact wrench is 300ft.-lbs. It can be adjusted from
115 ft.-lbs. to300ft.-lbs. Make sure that the nut or bolt you are using the tool to tighten
can withstand the rated torque.
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1.Tighten the nut as faras you can by hand.
2.Place the socket on the nut. Press the REVERSE BUTTON(#30) to FORWARD 1, 2, 3.
You can get the different torque on different steps. (See Fig. 2)
1.Press the trigger to start the tool.
115 ft.-lbs.
190 ft.-lbs.
300 ft.-lbs.
NOTE: When changing the step, stop pressing the trigger(#9), then adjust the reverse
button (#30).
NOTE:
1. If the tool stalls while tightening, DO NOT raise the outlet pressure ofthe air
compressor above 90 PSI.
2. When the nut has been tightened, remove the tool and socket. Do not overtighten.
3. If available, check the recommended torque specifications for the nut. You should
use a torque wrench to torque the nut after using the impact wrench.
Loosening
1.Attach the correct size socket to the anvil.
2.Set the compressor's pressure regulatorto 90 PSI.Do not set the compressor's
outlet regulator above 90 PSI.
3.Connect the tool to the air compressor's hose. If a leak is detected, disconnect the
air hose and fix it before use.
4.Place the socket overthe nut to loosen.
5.Grip the tool firmly. Press the REVERSEBUTTON (#30)to REVERSE step. Press the
trigger to start the tool.
(Caution: Make sure thenut or bolt canwithstand the impact wrench' sworking torque.)
NOTE:
If the toolcannot loosen the nut, DO NOT raise the outlet pressure ofthe air
compressor.
When the nut is moved, stop the tool by releasingthe trigger and remove the tool from
the nut. Remove the nut from the socket if needed.
MAINTENANCE
!
WARNING
Always disconnect the air supplybefore attemptingany maintenance.
After disconnecting the air supply, squeeze the triggerto make sure no airremains in
the unit.
1.After each use, wipe down the impact wrench with a lint-free cloth. Do not use
solvents or harsh detergents to clean the tool.
2.Make sure the air inlet is clean ofdirt, grease, or debis.
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Diagram
Description
Housing
Qty.
1
Description
Bearing
Qty.
2
Part No.
Part No.
22
23
24
1
2
O-ring
1
Rear Gasket
Rev. Valve
1
Cap Screw
3
8
1
O-ring
4
Hammer Case
Cap Screw
1
25
26
27
1
Rear Cover Ring
5
1
1
Trigger Retainer
6
1
Back Cover
Locking Pin
Spring
1
7
Rev. Valve Sleeve
Trigger Shaft
Trigger
1
28
29
30
31
1
8
1
1
9
1
Reverse Button
Screw
1
10
11
12
13
14
15
16
17
18
19
20
21
Valve Seat
Throttle Valve
Spring Valve
1
1
Spring Washer
1
32
33
34
35
36
37
8
1
Hammer Pin
Hammer
2
Exhaust Deflector
Inlet Bushing
1
2
1
Hammer Frame
Standard Anvil
O-ring
1
Front end plate
1
1
Rotor
1
1
Socket Retainer Ring
Anvil Bushing
Handle Grip
Rotor Vane
Spring Pin
Cylinder
6
38
39
40
41
1
1
1
1
1
Spring Pin
Spring Washer
1
1
Rear End Plate
1
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