Compressor HVAC: Service and Repair

REMOVAL

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 compressor clutch, clutch coil, engine, engine cylinder head or the generator.




1. Recover the refrigerant from the refrigerant system.
2. Disconnect and isolate the negative battery cable.
3. Remove the accessory drive belt.
4. Remove the nuts (4) that secure the A/C suction line (5) and the A/C discharge line (9) to the A/C compressor (6).
5. Disconnect the refrigerant lines from the A/C compressor and remove and discard the seals.
6. Install plugs in, or tape over all of the opened refrigerant line fittings and the compressor ports.




7. Loosen the bolt (5) that secures the bracket (7) to the accessory mounting bracket (4).
8. Remove the three bolts (1, 6 and 3) that secure the A/C compressor (2) to the accessory mounting bracket.
9. 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. See Refrigerant Oil Level for the procedures. Refrigerant Oil. Use only refrigerant oil of the type recommended for the compressor in the vehicle.




1. Position the A/C compressor (2) onto the accessory mounting bracket (4).
2. Install and tighten the bolts in the following sequence:
- Install bolt (3) and hand tighten.
- Install bolt (6) and hand tighten.
- Install bolt (1) and hand tighten.
- Tightened bolt (3) to 40 N.m (30 ft. lbs.).
- Tightened bolt (6) to 55 N.m (41 ft. lbs.).
- Tightened bolt (1) to 55 N.m (41 ft. lbs.).
- Tightened bolt (5) to 55 N.m (41 ft. lbs.).




3. Remove the tape or plugs from the opened refrigerant line fittings and the compressor ports.
4. Lubricate new seals with clean refrigerant oil and install them onto the refrigerant line fittings. Use only the specified seals 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. Install the A/C suction line (5) and the A/C discharge line (9) onto the A/C compressor (6).
6. Install the nuts (4) that secure the refrigerant lines to the A/C compressor. Tighten the nuts to 20 N.m (15 ft. lbs.).
7. Install the accessory drive belt.
8. Reconnect the negative battery cable.
9. Evacuate the refrigerant system.
10. Charge the refrigerant system.