Ingersoll-Rand EL 24V Series, Maintenance Information, Page: 5 / 8

Form 16575318-Edition 1 5
Troubleshooting Guide
1. Screwdriver fails to rotate
(forward or reverse)
Is there power to the tool?
Yes
1. Defective Power Cord Assembly.
Replace the Power Cord Assembly if necessary.
2. No power from the controller.
Repair or replace (see Controller Service manual).
No
Does the Trigger Switch click
when the Trigger is depressed?
Defective Trigger Switch.
Replace the Trigger Switch.
No
Can the bit be turned by hand
when the tool is unplugged?
1. Planetary gearing defective.
Replace the Planet Gears, Spindle Assembly and Gear Head Assembly.
2. Clutch defective.
Repair or replace the clutch.
No
Yes
Does the tool operate properly
when bumped and jiggled?
1. Defective power cord.
Replace the Power Cord Assembly.
2. Forward/Reverse Switch defective.
Repair the Forward/Reverse Switch.
3. Defective solder connection.
Check all solder connections; resolder where necessary.
4. Defective Armature.
Replace the Motor Assembly.
5. Brush contact defective.
Replace the Brush Assembly.
No
Yes
Yes
Does brush wear appear
normal?
No
1. Worn or defective Brushes.
Replace the Brush Assemblies.
2. Defective Commutator.
Replace the Armature.
Yes
Does motor appear to be in
good condition?
No
Carbon buildup or dirt on Armature.
Clean the Armature using a good electrical contact cleaner and blow dry.
Yes
Does the Trigger Switch turn on
power to the Motor?
Trigger pad worn.
Replace the Trigger.
No
2. Screwdriver runs in one
direction but not the other.
Are wire leads in good condition
and properly soldered?
Yes
Defective solder connections.
Resolder and rewire if necessary.
No
Does Reverse Switch operate
properly?
Defective Reverse Switch. Replace it.
No
When gears are removed, will
the motor rotate?
No
Is planetary gearing smooth
when bit is rotated by hand?
1. Armature is in contact with the magnets.
Replace the motor.
2. Foreign material in the motor.
Clean the motor.
1. Bearing has failed.
Replace the Spindle Assembly.
2. Gears are worn or damaged.
Replace any defective gearing.
Clutch Assembly is worn.
Replace damaged or worn parts.
No
Yes
3. Bit does not rotate but
motor hums.
Yes
Yes