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When the triggered is pulled nothing happens.
If the impact wrench does nothing when the trigger is pulled, first check to see if you have a dead battery. Remove the battery from the bottom of the tool, then attach a known charged battery.
If you are certain the battery has charge, then check to see if the contacts on the bottom of the tool are dirty or corroded. If so, clean them with a brush and contact cleaner.
Over time, the brushes in the tool will become worn and dirty to the point that the tool will cease to function. In this case, the brush assembly will need to be replaced.
If the battery and contacts are good, and the brush assembly is clean and functioning, then the culprit may be the switch assembly. Replace the switch assembly.
If the battery contacts, brushes, and the switch assembly are all working properly, then you need to replace the motor.
The wrench stops working a few minutes in to use, and the body above the motor is hot to the touch.
If the motor is getting very hot to the touch, you may have dirty or worn brushes. Replace the brush assembly.
When the battery is placed on the charger, the charging LEDs do not illuminate.
Check the contacts on both the battery and the bottom of the tool. If they are dirty or corroded, clean them with a brush and contact cleaner.
If you have charged the battery, and the wrench is not working, test the battery with a volt meter. Place the positive lead of your volt meter on the positive contact of your battery and the negative lead on the negative contact. If you do not see approximately 20 volts on the display of the volt meter, then chances are your battery is not good. Replace the battery with a new one.
If you put a battery on the charger and it does not charge the battery, but a different charger will charge the battery, your charger may be faulty. Replace the charger.
When the tool is in use, but the LEDs are not illuminating.
Open the tool and check the wire connection that goes from the motor assembly to the switch assembly. If the connection is loose or disconnected, reconnect it. If the wires are damaged, replace the wires.
Disconnect the switch, remove it, and replace it with a new one.
With lots of use tools can get dirt and debris in-between parts.
Remove the forward reverse button and check for any possible dirt or debris. Remove any dirt or debris from the drill and then reinstall the forward reverse button.
Remove forward reverse selector and replace with a new forward reverse selector.
The bit will not stay secure in the chuck, when the tool is used, bits slip.
Remove the bit and inspect the chuck for any possible damage. If no damage is found, reinstall the bit and properly secure it in the chuck.
Remove the chuck from the drill and replace with a new chuck.
