6
Form 16575318-Edition 1
Troubleshooting Guide (Continued)
Does the speed of the Bit exceed rated
speed by more than 100 rpm?
Yes
Motor magnet is demagnetized.
Replace the motor.
4.
Shutoff brake malfunctions more
than one index of the Clutch.
No
Is Brake Switch functioning? (Does it
click when button is depressed and
does it test correctly with an
ohmmeter?
No
Defective Brake Switch.
Replace the Brake Switch.
Yes
Does Pushrod function properly?
No
Bent or worn Pushrod. Replace it.
Yes
Does Cam function properly?
No
Cam is worn and not providing adequate lift.
Replace the Cam.
Yes
Cam is worn and not providing adequate lift.
Replace the Cam.
Controller malfunctioning or defective.
Repair or replace. See Controller Service manual.
5.
Tool makes abnormal sounds
when the motor is running.
No
Is there looseness at the assembly
points?
Yes
1.
Screws are loose.
Tighten all Screws.
2.
Clutch Housing is loose.
Tighten the Clutch Housing to the proper torque.
After removing the gear train does
motor sound normal when running?
No
1.
Armature (31) is in contact with the Magnet.
Replace the motor
2.
Foreign material has gotten into the motor.
Clean or replace the motor.
3.
Ball Bearings are defective.
Replace the motor.
4.
Armature is defective.
Replace the motor.
Yes
Is the gear train properly lubricate?
No
No grease on the gear train.
Apply a thin film of the recommended grease to the gear train.
1.
Spindle Bearing has failed.
Replace the Spindle Assembly.
2.
Gears are worn or dirty.
Clean or replace the gears.
6.
Tool generates abnormal heat
when operating.
Yes
After removing the gear train, does tool
cool down and motor run normally?
No
Motor is defective.
Replace the motor.
Planetary gears and the Clutch require lubrication. Lubricate the Clutch and
gear train with the recommended grease.
NOTICE
Do not apply too much or too little grease.
Yes