Compressor HVAC: Service and Repair
A/C COMPRESSORREMOVAL
WARNING: REFER TO THE APPLICABLE WARNINGS AND CAUTIONS FOR THIS SYSTEM BEFORE PERFORMING THE FOLLOWING OPERATION. FAILURE TO FOLLOW THE WARNINGS AND CAUTIONS COULD RESULT IN POSSIBLE PERSONAL INJURY OR DEATH.
NOTE: The A/C compressor may be removed and repositioned without disconnecting the refrigerant lines or discharging the refrigerant system. Discharging is not necessary if servicing the A/C clutch, clutch field coil or the engine.
1. Disconnect and isolate the negative battery cable.
2. Recover the refrigerant from the refrigerant system.
3. Remove the accessory drive belt.
4. Disconnect the wire harness connector (3) from the A/C pressure transducer (2).
5. Remove the nuts (1) that secure the A/C discharge line (4) and the A/C suction line (6) to the A/C compressor (5).
6. Disconnect the A/C discharge line and the A/C suction line 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.
8. Disconnect the engine wire harness from the clutch field coil connector (6).
9. Remove the three bolts (1, 2 and 3) that secure the A/C compressor (5) to the engine and mounting bracket (4) and remove the compressor.
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 (5) onto the engine and mounting bracket (4).
2. Install and hand tighten the three bolts that secure the A/C compressor to the engine and mounting bracket.
3. Tighten the mounting bolts in the following sequence:
- The rear bolt (1) to 55 N.m (41 ft. lbs.).
- The front inboard bolt (3) to 40 N.m (30 ft. lbs.).
- The front outboard bolt (2) to 55 N.m (41 ft. lbs.).
4. Connect the wire harness connector to the A/C clutch field coil (6).
5. Remove the tape or plugs from the opened refrigerant line fittings and compressor ports.
6. 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.
7. Connect the A/C discharge line (4) and the A/C suction line (6) to the A/C compressor (5).
8. Install the nuts (1) that secure the A/C suction and discharge lines to the A/C compressor. Tighten the nuts to 12 N.m (105 in. lbs.).
9. Connect the wire harness connector (3) to the A/C pressure transducer (2).
10. Install the accessory drive belt.
11. Reconnect the negative battery cable.
12. Evacuate the refrigerant system.
13. Charge the refrigerant system.