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PROBLEM
Knocking Noise
CAUSE
Possible defect in safety
valve.
Defective check valve.
Loose pulley.
Loose flywheel.
Compressor mounting
screws loose.
Loose belt.
Carbon build-up in pump.
Belt to tight.
Excessive belt Loose belt.
wear
Tight belt.
Loose pulley.
Pulley misalignment.
Squealing Compressor pump has
sound no oil.
Loose belt.
CORRECTION
Operate safety valve manually by
pulling on ring. If valve still leaks, it
should be replaced.
Remove and clean, or replace.
Tighten pulley set screw, see Parts
manual for torque specifications.
Tighten flywheel screw, see Parts
manual for torque specifications.
Tighten mounting screws,see Parts
manual for torque specifications.
Check belt tension, see "Adjusting
Belt Tension" in the Maintenance
section.
Have checked by a Trained Service
Technician.
Check belt tension, see "Adjusting
Belt Tension" in the Maintenance
section.
Check belt tension, see "Adjusting
Belt Tension" in the Maintenance
section.
Check belt tension, see "Adjusting
Belt Tension" in the Maintenance
section.
Have checked by a Trained Service
Technician.
See "Motor Pulley/Flywheel
Alignment" paragraph in the
Maintenance section.
See "Oil-Checking" paragraph in the
Maintenance section.
Check belt tension, see "Adjusting
Belt Tension" in the Maintenance
section.
N004035 24-ENG
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