A/C - Compressor Knocking Noise at Idle
HEATING & AIR CONDITIONINGAC003-97
May 23, 1997
Title:
A/C COMPRESSOR KNOCKING NOISE
Models:
'94 - '96 Camry L4
Introduction
An improved Alternator Belt Adjusting Bar and A/C Compressor Magnetic Clutch Rotor Sub-assembly are being made available to eliminate Compressor Knocking Noise at idle.
Affected Vehicles
^ 1994 through 1996 Model Year 4 Cylinder Camrys built from August 1993 to July 1996.
Part Number Information
Repair Ensure that the A/C system high & low side refrigerant pressures are normal before Procedure proceeding with the following repair procedure.
NOTE:
For abnormal system pressures, use the diagnostic procedure given in the Repair Manual to determine the problem.
1. Remove the A/C Compressor.
2. Replace the Alternator Adjusting Bar with the new part number.
3. Replace the Magnetic Clutch Rotor with the new part number.
4. Adjust the clearance between the pressure plate and rotor from 0.35 to 0.60 mm (from 0.014 to 0.024 inch).
NOTE:
Use shims to adjust the clearance according to Repair Manual.
5. Install the A/C Compressor.
6. Adjust the drive belt tension to 121 ft. lbs. otherwise the condition may persist.