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SECTION 7: SERVICE
Review the troubleshooting procedures in this section if a problem develops with your machine. If you need
replacement parts or additional help with a procedure, call our Technical Support. Note: Please gather the
serial number and manufacture date of your machine before calling.
Motor & Electrical
Symptom
Possible Cause
Machine does not
1. Incorrect power supply voltage or circuit
start, or power
size.
supply breaker
2. Power supply circuit breaker tripped or fuse
immediately trips
blown.
after startup.
3. Wiring broken, disconnected, or corroded.
4. Motor brushes at fault.
5. ON/OFF switch at fault.
6. Circuit board at fault.
7. Motor at fault.
Machine stalls or is
1. Machine undersized for task.
underpowered.
2. Motor brushes at fault.
3. Motor overheated.
4. Circuit board at fault.
5. ON/OFF switch at fault.
6. Motor at fault.
7. Motor bearings at fault.
Machine has
1. Motor or component loose.
vibration or noisy
2. Machine incorrectly mounted to workbench.
operation.
3. Grinding wheel at fault/arbor hole not
round.
4. Motor shaft bent.
5. Motor at fault.
6. Motor bearings at fault.
Model T32002 (Mfd. Since 02/20)
Troubleshooting
Possible Solution
1. Ensure correct power supply voltage and circuit size
(Page 14).
2. Ensure circuit is sized correctly and free of shorts.
Reset circuit breaker or replace fuse.
3. Fix broken wires or disconnected/corroded
connections (Page 31).
4. Remove/replace brushes (Page 30).
5. Replace.
6. Replace.
7. Test/repair/replace.
1. Use new grinding/buffing wheel; reduce feed rate.
2. Remove/replace brushes (Page 30).
3. Clean motor, let cool, and reduce workload.
4. Inspect and replace if at fault.
5. Replace.
6. Test/repair/replace.
7. Test by rotating shaft; rotational grinding/loose shaft
requires bearing replacement.
1. Replace damaged bolts/nuts or tighten if loose.
2. Adjust feet, shim, or tighten mounting hardware
(Page 17).
3. Dress (Page 28)/replace (Page 22) grinding wheel.
4. Test with dial indicator and replace motor.
5. Test/repair/replace.
6. Test by rotating shaft; rotational grinding/loose shaft
requires bearing replacement.
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