Compressor HVAC: Service and Repair

REMOVAL

WARNING: REVIEW SAFETY PRECAUTIONS AND WARNINGS BEFORE PERFORMING THIS PROCEDURE. FAILURE TO FOLLOW THE WARNINGS AND CAUTIONS COULD RESULT IN POSSIBLE PERSONAL INJURY OR DEATH.

1. Disconnect and isolate the negative battery cable.
2. Recover the refrigerant from the refrigerant system.
3. Remove the accessory drive belt.
4. Raise and support the vehicle.

A/C Compressor Refrigerant - Typical:

5. Remove the bolts that secure the A/C suction and discharge lines to the A/C compressor.
6. Disconnect the A/C suction and discharge lines from the A/C compressor and remove and discard the O-ring seals.
7. Install plugs in, or tape over the opened refrigerant line fittings and compressor ports.

A/C Compressor - Typical:

8. Disconnect the engine wire harness connectors from the compressor clutch coil connector and the high pressure cut out switch.
9. Support the A/C compressor and remove the four A/C compressor mounting bolts.
10. Remove the A/C compressor from the engine compartment.

INSTALLATION

NOTE: If a replacement A/C compressor is being installed, be certain to check the refrigerant oil level (refer to Refrigerant Oil). Use only refrigerant oil of the type recommended for the A/C compressor in the vehicle.

1. Position the A/C compressor into the engine compartment.
2. Install the four bolts that secure the A/C compressor to the mounting bracket. Tighten the bolts to 28 N.m (21 ft.lbs.).
3. Remove the tape or plugs from the A/C compressor ports and refrigerant line fittings.
4. Lubricate new rubber O-ring seals with clean refrigerant oil and install them onto the refrigerant line fittings. Use only the specified O-rings as they are made of a special material for the R-134a system. Use only refrigerant oil of the type recommended for the A/C compressor in the vehicle.
5. Connect the A/C suction and discharge lines to the A/C compressor.
6. Install the bolts that secures the A/C suction and discharge lines to the A/C compressor. Tighten the bolts to 12 N.m (106 in.lbs.).
7. Connect the wire harness connectors to the compressor clutch coil and the high pressure cut out switch.
8. Lower the vehicle.
9. Install the accessory drive belt.
10. Reconnect the negative battery cable.
11. Evacuate the refrigerant system.
12. Charge the refrigerant system.