PROBLEM

CAUSE

CORRECTION

Knocking Noise.

Possible defect in safety

Operate safety valve manually

 

valve.

by pulling on ring. If valve still

 

 

leaks, it should be replaced.

 

Defective check valve.

Remove and clean, or replace.

 

Loose pulley

Tighten pulley set screw;

 

 

see Parts manual for torque

 

 

specifications.

 

Loose flywheel

Tighten flywheel screw; see

 

 

Parts manual for torque

 

 

specifications.

 

Compressor mounting

Tighten mounting screws;

 

screws loose.

see Parts manual for torque

 

 

specifications.

 

Loose belt.

Loosen wingnut and then

 

tighten wingnut until it contacts

 

 

 

 

the washer, plus one turn.

 

Carbon build-up in pump.

Have checked by a Trained

 

 

Service Technician.

 

Belt to tight.

Loosen wingnut and then

 

 

tighten wingnut until it contacts

 

 

the washer, plus one turn.

 

 

 

Excessive belt

Loose belt.

Loosen wingnut and then

wear.

 

tighten wingnut until it contacts

 

 

the washer, plus one turn.

 

Tight belt.

Loosen wingnut and then

 

 

tighten wingnut until it contacts

 

 

the washer, plus one turn.

 

Loose pulley.

Have checked by a Trained

 

 

Service Technician.

 

Pulley misalignment.

See "Motor Pulley/Flywheel

 

 

Alignment" paragraph in the

 

 

"Maintenance" section.

 

 

 

Squealing

Compressor pump has no

See "Oil-Checking" paragraph

sound.

oil.

in the "Maintenace" section.

 

Loose belt.

Loosen wingnut and then

 

 

tighten wingnut until it contacts

 

 

the washer, plus one turn.

 

 

 

27- ENG

A09713

Page 27
Image 27
Craftsman 919.195411 owner manual Problem Cause Correction