Section 7: Service; Troubleshooting - Grizzly T32003 Owner's Manual

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. Power supply circuit breaker tripped or fuse
start, or power
blown.
supply fuse/breaker
2. Wiring broken, disconnected, or corroded.
trips immediately
after startup.
3. Motor brushes at fault.
4. Circuit board at fault.
5. Motor at fault.
Machine stalls or is 1. Machine undersized for task.
underpowered.
2. Buffing wheel too large/wide or exceeds
recommended wheel rating.
3. Motor brushes at fault.
4. Motor overheated.
5. Circuit board at fault.
6. Motor or motor bearings at fault.
Machine has 1. Buffing wheel loose or worn.
vibration or noisy
2. Tapered spindle sleeves dislodged.
operation.
3. Machine incorrectly mounted to workbench.
4. Motor or component loose.
5. Motor shaft bent.
6. Motor or motor bearings at fault.
Operation
Symptom Possible Cause
achine slows when 1. Operator using too much pressure.
M
operating.
2. RPM too low.
Poor results from 1. Workpiece contains residue or
buffing/polishing
contaminants.
operation.
2. Contaminated buffing compounds on
wheel.
3. Wrong buffing compound for material.
4. Workpiece not held firmly.
5. Incorrect stroke for buffing compound/
wheel/material.
6. Incorrect type of buffing wheel.
Model T32003 (Mfd. Since 02/20)

Troubleshooting

Possible Solution
1. Ensure circuit is sized correctly and free of shorts.
Reset circuit breaker or replace fuse.
2. Fix broken or disconnected/corroded wires
(Page 10).
3. Remove/replace brushes (Page 24).
4. Replace.
5. Test/repair/replace.
1. Use new buffing wheel; reduce feed rate.
2. Replace with smaller wheel or reduce wheel width.
3. Remove/replace brushes (Page 24).
4. Clean motor, let cool, and reduce workload.
5. Test/repair/replace.
6. Test/repair/replace.
1. Replace buffing wheel (Page 20).
2. Reattach spindle sleeves (Page 14).
3. Adjust feet, shim, or tighten mounting hardware.
4. Replace damaged bolts/nuts or tighten if loose.
5. Test with dial indicator and replace motor.
6. Test by rotating shaft; rotational grinding/loose shaft
requires bearing replacement.
Possible Solution
1. Use less pressure when buffing.
2. Increase buffing wheel RPM.
1. Dirt, oil, rust, paint, or other film must be removed
chemically or with water. Dry parts before buffing.
2. DO NOT mix different compounds on same wheel.
Use separate wheel for each compound. Remove
compound with buffing wheel rake (Page 22).
3. Use correct buffing compound (Page 19).
4. Use a holding device to firmly secure workpiece.
5. Use upward stroke with heavy pressure for cutting;
use downward stroke with light pressure for
polishing.
6. Use correct buffing wheel (Page 18).
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