Allied Construction Products, LLC. www.alliedcp.com
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TM103337_HP1600_18feb
11.0 Troubleshooting Guide
This Troubleshooting guide identifies several
commonly encountered conditions along with the
recommended corrective action. For conditions other
than these, contact the Allied Technical Service
Department.
CAUTION
When working with the Allied equipment all
procedures and operations must be performed
correctly so that unsafe situations may be avoided.
Do not attempt any repairs unless you have proper
training, skills and tools. Understand all procedures
before doing work. Do not proceed beyond
instructions or warnings that you do not fully
understand.
Fault
Possible Cause
Corrective Action
No operation
Insufficient oil pressure or flow
Check hydraulic supply system. Correct
as required
Failed bearings
Inspect and replace bearings
Failed motor
Inspect and replace worn parts
Erratic operation
Erratic oil pressure or flow
Check hydraulic supply system. Correct
as required
Failed spring mount
Inspect and replace failed mount
Operation with excessive
noise or vibration
Failed bearing
Inspect and replace bearings
Imperfect bearing lubrication
Check oil level, quality & type
Loose bolts or mounting
hardware
Inspect and tighten bolts
Operation stalls under load
Pressure relief too low
Check hydraulic supply system. Correct
as required
Failed bearing.
Inspect and replace bearings
Motor internal bypass failed
seals or worn gears
Inspect and replace motor
Operation smooth, but at
reduced speed
Insufficient oil flow
Check carrier output
If motor or flow regulator valve was
replaced, check that the motor and valve
are properly matched
Oil discharge from pressure
relief vent
Oil level too high
Check oil level
This Allied work tool is not self-powered. Its
performance level will be impaired by a hydraulic
system that is not operating to specification.
If the carrier machine is equipped with an adjustable
work mode switch, verify its proper setting for Ho-Pac
operation.
Use a flow meter to measure oil delivery and to verify
the cracking pressure of the relief valve.
When troubleshooting, include all associated parts of
the attachment circuit to exclude any possibility of a
collapsed hose or other fault or malfunction.
Tools required for testing include a flow meter and
pressure gages. Test procedures, along with a form
to record the results of the flow test, can be found in
the Technical Data section of this manual.