Ninety-Eight FWD V6-260 4.3L DSL (1985)
Compressor Clutch: All Technical Service Bulletins
A/C - Noise From Compressor Clutch Cover
SUBJECT
AIR CONDITIONING NOISE
NUMBER: 85-T-5
DATE:
Sept.. 17, 1984
MODELS/YEARS
1985 NINETY-EIGHT
SECTION:
1D
CONDITION
A moan type noise may be experienced on some early production cars at off idle engine speeds with the air conditioning compressor engaged. The noise
disappears when the air conditioning is turned off.
CAUSE
The noise is caused by resonance of the compressor clutch cover due to one of two reasons:
1.
Improper torque of the three (3) dust cover screws.
2.
Clutch drive plate spring rattle.
CORRECTION
Tighten the compressor clutch cover screws to 4-5 N-m (30-40 in.lbs.). If noise remains, install kit no. 2724325. This kit contains a torque dampened
clutch hub and drive plate assembly and dust cover. If after installing the kit the moan is not corrected, it will be necessary to follow normal compressor
diagnosis to correct the condition.
