Diagnosis - Isuzu 1999 RODEO Workshop Manual

1A–66 HEATING, VENTILATION AND AIR CONDITIONING (HVAC)

Diagnosis

Condition
Noise from compression
Noise from magnetic clutch
Insufficient cooling
Not rotating
Oil and/or gas leakage
Possible cause
Defective rotor/piston
Defective shaft
Defective bearing
Defective clutch
Clearance between drive plate and
pulley not standard
Defective gasket
Defective rotor/reed valve
Defective trigger valve/suction valve
Defective rotor/piston
Defective shaft
Rotating parts seized
insufficient oil
Defective seal
Defective O-ring
Correction
Replace compressor/cylinder and
shaft assembly
Replace compressor/cylinder and
shaft assembly
Replace magnetic clutch
Replace magnetic clutch
Adjust the clearance or replace
magnetic clutch
Replace compressor/gasket
Replace compressor/valve plate
Replace compressor/suction valve
Replace compressor/cylinder and
shaft assembly
Replace compressor/cylinder and
shaft assembly
due to Replace compressor
Replace compressor/shaft seal
Replace