Compressor Replacement
TOOLS REQUIREDJ 39400-A Halogen Leak Detector
REMOVAL PROCEDURE
1. Recover the refrigerant. Refer to Refrigerant Recovery and Recharging.
2. Release the drive belt tensioner.
3. Remove the drive belt from the A/C compressor.
4. Raise the vehicle refer to Lifting and Jacking the Vehicle.
5. Remove the right front fender liner.
6. Disconnect the electrical connector from the compressor.
7. Remove the Compressor hose assembly bolt from the compressor.
8. Remove the Compressor hose assembly from the compressor.
9. Remove and discard the sealing washers.
10. Remove the compressor mounting bolts.
11. Remove the compressor.
12. If replacing the compressor:
12.1. Drain the oil from both the suction and the discharge ports into a clean container.
12.2. Remove the compressor crankcase oil drain plug and drain the crankcase oil into the same container.
12.3. Measure and record the amount of oil drained from the compressor. This measurement will be used during the compressor installation procedure.
12.4. Properly discard the used PAG oil.
INSTALLATION PROCEDURE
NOTE: Do not mix refrigerant oils. Use of incorrect refrigerant oil will cause compressor failure.
The CVC compressor uses a low viscosity refrigerant oil, GM P/N 12378526 (Canadian 88900060).
IMPORTANT: NEW CVC compressor assemblies are shipped with a full poly-alkylene glycol (PAG) refrigerant oil charge. Use of the incorrect PAG oil can result in compressor failure.
1. Drain the Pag oil from the new compressor into a clean calibrated measuring container. Drain from the crankcase and from the rear head ports. If the amount of old oil drained is less than or equal to 75 ml (2.5 oz), add 75 ml of new oil into the new compressor through the crankcase bolt hole.
If the amount of old oil drained is greater than 75 ml (2.5 oz), add the equivalent amount of new oil into the new compressor through the crankcase bolt hole.
2. Refer to Refrigerant System Capacities (LA1) or Refrigerant System Capacities (L61).
NOTE: Refer to Fastener Notice in Service Precautions.
3. Install the crankcase oil drain plug to the compressor.
Tighten
Tighten the drain plug to 16 N.m (12 lb ft).
4. Rotate the clutch driver 3 times to lubricate the internal swashplate and the piston shoes.
5. Install the bolts and the compressor to the engine.
Tighten
Tighten the top compressor bolts to 22 N.m (16 lb ft).
6. Install NEW sealing washers on the compressor ports.
7. Install the A/C compressor hose assembly to the compressor.
8. Install the A/C compressor hose assembly bolt.
Tighten
Tighten the bolt to 11 N.m (8 lb ft).
9. Connect the compressor electrical connector.
10. Lower the vehicle.
11. Install the drive belt on the A/C compressor
12. Release the drive belt tensioner.
13. Evacuate and charge the refrigerant system. Refer to Refrigerant Recovery and Recharging.
14. Leak test the fittings of the repaired or reinstalled component using the J 39400-A.