Compressor HVAC: Service and Repair
COMPRESSOR-A/CREMOVAL
WARNING: REVIEW SAFETY PRECAUTIONS AND WARNINGS BEFORE PERFORMING THIS PROCEDURE AND 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 (7).
4. Raise and support the vehicle.
5. Remove the bolts (2 and 4) that secure the A/C suction line (5) and the A/C discharge line (1) to the A/C compressor (3).
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 the compressor ports (2 and 3).
8. Disconnect the engine wire harness connectors from the compressor clutch coil connector (1) and the A/C high pressure switch (4).
9. Support the A/C compressor (6) and remove the four bolts (5) that secure the compressor to the mounting bracket (7).
10. Remove the A/C compressor from the engine compartment.
INSTALLATION
NOTE:
- If the A/C compressor is being replaced, 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.
- Replacement of the refrigerant line O-ring seals is required anytime a refrigerant line is opened. Failure to replace the rubber O-ring seals could result in a refrigerant system leak.
1. Position the A/C compressor (6) into the engine compartment.
2. Install the four bolts (5) that secure the A/C compressor to the mounting bracket (7). Tighten the bolts to 28 N.m (21 ft. lbs.).
3. Connect the wire harness connectors to the compressor clutch coil connector (1) and the A/C high pressure switch (4).
4. Remove the tape or plugs from the compressor ports (2 and 3) and the refrigerant line fittings.
5. 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.
6. Connect the A/C discharge line (1) and the A/C suction line (5) to the A/C compressor (3).
7. Install the bolts (4 and 2) that secure the A/C suction and discharge lines to the A/C compressor. Tighten the bolts to 12 N.m (106 in. lbs.).
8. Lower the vehicle.
9. Install the accessory drive belt (7).
10. Reconnect the negative battery cable.
11. Evacuate the refrigerant system.
12. Charge the refrigerant system.