Compressor HVAC: Service and Repair
REMOVALWARNING: 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 resonator from the engine.
4. Remove the serpentine drive belt.
5. Disconnect the wire harness connector from the A/C compressor clutch coil.
6. Remove the nuts (1) that secure the A/C suction line (2) and A/C discharge line (3) to the A/C compressor (4).
7. Disconnect the A/C suction and discharge lines from the A/C compressor and remove and discard the O-ring seals and gaskets.
8. Install plugs in, or tape over all of the opened refrigerant line fittings and the compressor ports.
9. Loosen the bolt (5) that secures the bracket (7) to the accessory mounting bracket (4).
10. Remove the bolts (1, 6 and 3) that secure the A/C compressor (2) to the accessory mounting bracket.
11. Remove the A/C compressor from the engine compartment.
INSTALLATION
NOTE: Be certain to check the refrigerant oil level if the A/C compressor is being replaced. See Refrigerant Oil Level in this group for the procedures. Use only refrigerant oil of the type recommended for the A/C 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.
- Tighten bolt (3) to 40 N.m (30 ft. lbs.).
- Tighten bolt (6) to 55 N.m (41 ft. lbs.).
- Tighten bolt (1) to 55 N.m (41 ft. lbs.).
- Tighten bolt (5) to 55 N.m (41 ft. lbs.).
3. Remove the tape or plugs from the opened A/C suction line (2) and the A/C discharge line (3) and the A/C compressor (4).
4. Lubricate new rubber O-ring seals with clean refrigerant oil and install them and new gaskets onto the suction and the discharge 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 onto the A/C compressor.
6. Install the nuts (1) that secure the A/C suction and discharge lines to the A/C compressor. Tighten the nuts to 23 N.m (17 ft. lbs.).
7. Connect the wire harness connector to the A/C compressor clutch coil.
8. Install the serpentine drive belt.
9. Install the resonator onto the engine.
10. Reconnect the negative battery cable.
11. Evacuate the refrigerant system.
12. Charge the refrigerant system.