Allied HO-PAC 1000 Series, Technical Manual, Page: 27 / 50

1000 Series Ho-Pac
SECTION 10.0
TROUBLESHOOTING
Listed below are several operating problems and their recommended corrective action.
1. Unit does not run:
a. Insufficient oil pressure or flow. Check hydraulic supply system. Correct as
required.
b. Failed bearings. Inspect and replace bearings.
c. Broken motor shaft or worn splines. Inspect and replace worn parts.
2. Unit runs erratically:
a. Erratic oil pressure or flow. Check hydraulic supply system. Correct as
required.
b. Failed spring mount. Inspect and replace failed mount.
3. Unit runs with excessive noise or vibration:
a. Failed bearing. Inspect and replace bearings.
b. Loose bolts or mounting hardware. Inspect and tighten bolts.
c. Check oil level.
4. Unit runs, but stalls under load:
a. Pressure relief too low. Check hydraulic supply system. Correct as required.
b. Failed bearing. Inspect and replace bearings.
c. Motor worn or motor seals failed. Inspect and replace motor.
5. Unit runs smoothly, but at reduced speed:
a. Flow too low. Check carrier output.
b. Flow too low. If motor or control valve was replaced, check that the motor and
valve are properly matched.
For conditions other than these, contact the Allied Technical Service Department.
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