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PROBLEM
Knocking Noise.
Excessive belt
wear
Squealing
sound.
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
Loose belt.
Tight belt.
Loose pulley.
Pulley misalignment.
Compressor pump has 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.
Loosen wingnut and then
tighten wingnut until it
contacts the washer, plus one
turn.
Have checked by a Trained
Service Technician.
Loosen wingnut and then
tighten wingnut untilit
contacts the washe£ plus one
turn.
Loosen wingnut and then
tighten wingnut untilit
contacts the washe£ plus one
turn.
Loosen wingnut and then
tighten wingnut untilit
contacts the washe£ plus one
turn.
Have checked by a Trained
Service Technician.
See Motor Pulley/Flywheel
Alignment paragraph in the
Maintenance section.
See Oil-Checking paragraph in
the Maintenace section.
Loosen wingnut and then
tighten wingnut untilit
contacts the washe£ plus one
turn.
27_ ENG D30090
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