Grizzly G0657/G0658 - Manual (Page 32)

-30-
G0657/G0658 Benchtop Lathe
Review the troubleshooting and procedures in this section to fix or adjust your machine if a problem devel-
ops. If you need replacement parts or you are unsure of your repair skills, then feel free to call our Technical
Support at (570) 546-9663.
SECTION 7: SERVICE
Troubleshooting
Motor & Electrical
Symptom Possible Cause Possible Solution
Machine does not
start or a breaker
trips. 1. Plug/receptacle is at fault or wired incor-
rectly.
2. Power supply is at fault/switched OFF.
3. Lockout key is at fault.
4. Motor ON button or ON/OFF switch is at
fault.
5. Wiring is at fault.
6. Motor brushes are worn.
7. Motor is at fault.
1. Test for good contacts; correct the wiring.
2. Ensure hot lines have correct voltage on all legs and
main power supply is switched ON.
3. Install/replace lockout key; replace switch.
4. Replace faulty ON button or ON/OFF switch.
5. Check for broken wires or disconnected/corroded
connections, and repair/replace as necessary.
6. Replace brushes.
7. Test/repair/replace.
Machine stalls or is
Overloaded. 1. Too much tool pressure.
2. Plug/receptacle is at fault.
3. Motor bearings are at fault.
4. Motor brushes are worn.
5. Motor has overheated.
6. Motor is at fault.
1. Reduce tool pressure.
2. Test for good contacts; correct the wiring.
3. Test by rotating shaft; rotational grinding/loose shaft
requires bearing replacement.
4. Replace brushes.
5. Clean off motor, let cool, and reduce workload.
6. Test/repair/replace.
Machine has vibra-
tion or noisy opera-
tion. 1. Motor or component is loose.
2. Motor fan is rubbing on fan cover.
3. Workpiece or center/chuck is at fault.
4. Motor bearings are at fault.
1. Inspect/replace stripped or damaged bolts/nuts, and
re-tighten with thread locking fluid.
2. Replace dented fan cover; replace loose/damaged
fan.
3. Center workpiece on center/chuck or face plate;
reduce RPM; replace defective center/chuck.
4. Test by rotating shaft; rotational grinding/loose shaft
requires bearing replacement.
Symptom Possible Cause Possible Solution
Vibration noise
while machine
is running; noise
changes when
speed is changed. 1. Belt cover loose. 1. If necessary, install a soft, vibration dampening
material (between the belt cover and the headstock
casting.
Wood Lathe Operation