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PROBLEM
KnockingNoise.
CAUSE
Possible defect in safety
valve.
Defective
check valve.
Compressor
mounting
screws
loose
CORRECTION
Operate safety valve manually
by pulling on ring. If valve still
leaks, it should be replaced.
Remove and clean, or replace.
Tighten mounting screws,see
Parts manual for torque
specifications.
Carbon build-up
in pump
Have checked by a Trained
Service Technician.
Squealing
Compressor
pump has no
See Oil-Checking
paragraph in
sound,
oil.
the Maintenance section.
23- ENG
D24064
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