TROUBLESHOOTING GUIDE
USER-MAINTENANCE INSTRUCTIONS
Air Motor Lubrication
Air tool oil
Male plug
Air inlet port
C
To maintain the maximum performance of the air tool, it must be lubricated
each time it is used. Dust, dirt, rust and oil residue will build up inside the tool
and reduce the performance. An in-line oiler is recommended for proper
automatic tool lubrication (see Figure A). If an in-line oiler is not available, the
tool can be lubricated manually through the inlet port (see Figure C).
1. Disconnect the air tool from the air supply.
2. Turn the tool upside down and while depressing the trigger, add 4-6
drops of air tool oil or SAE10 nondetergent oil into the air inlet.
NOTE:
Depressing the trigger helps circulate oil in the air motor.
3. Reconnect the tool to the air supply, cover the exhaust port end with a towel
and run in forward and reverse directions for approximately 30 seconds to remove excess oil.
NOTE: If the tool remains sluggish after it has been lubricated, the internal components may need to
be cleaned.
To Clean:
Disconnect the air tool from the air supply and pour or spray a generous amount of WD-40® into the air inlet
with the trigger depressed. Connect the tool to the air supply, cover the exhaust port end with a towel and run in
forward and reverse directions for approximately 30 seconds. Follow the air motor lubrication instructions above
after cleaning is completed to re-lubricate the tool.
After oiling or cleaning, cover the exhaust port with a towel and operate the tool for a
few seconds to safely remove the excess oil. Clean the handle and surface of the tool of any oil residue.
Failure to cover the exhaust port and clean the tool can result in serious injury.
Note: Keep the towel away
from moving parts!
Lubricate Impact Mechanism
Periodically, the impact mechanism and the front bearing needs to be
Oil port holes
D
lubricated. (Lubricate 3-4 times a year for general tool usage and more
frequently with heavier tool usage).
1. Disconnect the air tool from the air supply.
2. Remove the allen socket screws from the oil port holes (see Figure D).
3. Add 1 tablespoon of air tool oil or SAE10 nondetergent oil into the oil
port holes. Replace the allen socket screws (see Figure D).
4. Reconnect the tool to the air supply and run for approximately 30 seconds,
rotating the tool sideways and upside down to lubricate all internal parts.
5. Disconnect the air tool from the air supply and remove the allen socket screw. Hold the oil port hole over a
suitable container to allow excess oil to drain.
6. Repeat the procedure above until the oil comes out clear. Any remaining oil inside the tool will properly
lubricate the tool.
7. Remember to replace the allen socket screw when lubrication is completed.
NOTES:
This lubrication procedure will help reduce moisture, dust and dirt that gradually increases inside the
impact wrench during use and reduces performance levels.
SYMPTOM
POSSIBLE CAUSE(S)
CORRECTIVE ACTION
Tool will not run or runs
slowly
Grit in tool; tool gummed up
Clean the air motor inside the tool with
WD-40® (see “user maintenance” section).
No oil in tool
Add 4-6 drops of air tool oil into the air inlet of
the tool (see “user maintenance” section).
Low air pressure
Adjust compressor regulator to 90 PSI.
Torque regulator at low setting.
Adjust torque regulator knob to a higher setting.
Air hose leaks
Tighten and seal hose fittings with Teflon® tape
if leaks are found.
