Compressor HVAC: Service and Repair

Compressor Remove/Install - 6 Cylinder Engine:

The compressor may be removed and repositioned without disconnecting the refrigerant lines or discharging the refrigerant system. Discharging is not necessary if servicing the compressor clutch or clutch coil, the engine, the cylinder head, or the generator.

WARNING: REVIEW THE WARNINGS AND CAUTIONS BEFORE PERFORMING THE FOLLOWING OPERATION.

REMOVAL
1. Recover the refrigerant from the refrigerant system. See Refrigerant Recovery for the procedures.
2. Disconnect and isolate the battery negative cable.
3. Remove the serpentine drive belt.
4. Unplug the compressor clutch coil wire harness connector.
5. Remove the screws that secure the suction line and discharge line block fittings to the manifold on the compressor. Install plugs in, or tape over all of the opened refrigerant fittings.
6. Remove the screws that secure the compressor.
7. Remove the compressor.

NOTE: It a replacement compressor is being installed, be certain to check the refrigerant oil level. See Compressor Oil for the procedures. Use only refrigerant oil of the type recommended for the compressor in the vehicle.

INSTALLATION
1. Install the compressor. Tighten mounting screws fastening the compressor to the block to 45-65 Nm (35-50 ft. lbs.). Tighten the mounting screws holding the rear brace to the compressor and block to 40-55 Nm (30-40 ft. lbs.).
2. Remove the tape or plugs from all of the opened refrigerant line fittings. Install the suction line and discharge line block fittings to the manifold on the compressor. Tighten the mounting screws to 25.4 Nm (225 in. lbs.).
3. Install the serpentine drive belt.
4. Plug in the compressor clutch coil wire harness connector.
5. Connect the battery negative cable.
6. Evacuate the refrigerant system. See Refrigerant System Evacuate for the procedures.
7. Charge the refrigerant system. See Refrigerant System Charge for the procedures