Grizzly G0657/G0658 owner manual Service, Troubleshooting

Symptom

Possible Cause

Possible Solution

Machine

does not

1.

Plug/receptacle is at fault or wired incor-

1.

Test for good contacts; correct the wiring.

start or

a breaker

rectly.

trips.

2.

Power supply is at fault/switched OFF.

2.

Ensure hot lines have correct voltage on all legs and

main power supply is switched ON.

3.

Lockout key is at fault.

3.

Install/replace lockout key; replace switch.

4.

Motor ON button or ON/OFF switch is at

4.

Replace faulty ON button or ON/OFF switch.

fault.

5.

Wiring is at fault.

5.

Check for broken wires or disconnected/corroded

connections, and repair/replace as necessary.

6.

Motor brushes are worn.

6.

Replace brushes.

7.

Motor is at fault.

7.

Test/repair/replace.

Machine stalls or is

1.

Too much tool pressure.

1.

Reduce tool pressure.

Overloaded.

2.

Plug/receptacle is at fault.

2.

Test for good contacts; correct the wiring.

3.

Motor bearings are at fault.

3.

Test by rotating shaft; rotational grinding/loose shaft

requires bearing replacement.

4.

Motor brushes are worn.

4.

Replace brushes.

5.

Motor has overheated.

5.

Clean off motor, let cool, and reduce workload.

6.

Motor is at fault.

6.

Test/repair/replace.

Machine

has vibra-

1.

Motor or component is loose.

1.

Inspect/replace stripped or damaged bolts/nuts, and

tion or noisy opera-

re-tighten with thread locking fluid.

tion.

2.

Motor fan is rubbing on fan cover.

2.

Replace dented fan cover; replace loose/damaged

fan.

3.

Workpiece or center/chuck is at fault.

3.

Center workpiece on center/chuck or face plate;

reduce RPM; replace defective center/chuck.

4.

Motor bearings are at fault.

4.

Test by rotating shaft; rotational grinding/loose shaft

requires bearing replacement.

Symptom

Possible Cause

Possible Solution

Vibration noise

1. Belt cover loose.

1. If necessary, install a soft, vibration dampening

while machine

material (between the belt cover and the headstock

is running; noise

casting.

changes when

speed is changed.

-30-

G0657/G0658 Benchtop Lathe