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PROBLEM
Knocking Noise. Possible defect in safety
Squealing
sound.
Air vent on
dipstick is
blocked.
CAUSE
valve.
Defective check valve.
Compressor mounting
screws loose.
Carbon build-up in pump.
Compressor pump has no
oil.
Air vent clogged with
debris.
Operate safety valve manually
by pulling on ring. If valve still
leaks, it should be replaced.
Remove and clean, or replace.
Refer to the "To Replace or
Clean Check Valve" in the
"Service and Adjustment"
section.
Tighten mounting screws,see
Parts manual for torque
specifications.
Have checked by a Trained
Service Technician.
See "Oil-Checking" paragraph
in the "Maintenace" section.
Clean air vent or replace
dipstick.
23- ENG
CORRECTION
A10055
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