Compressor HVAC: Service and Repair

Air Conditioning (A/C) Compressor - 3.0L, 3.5L





NOTE: 3.0L shown, 3.5L similar.









Removal and Installation

NOTICE: If installing a new Air Conditioning (A/C) compressor due to an internal failure of the old unit, the following procedures must be carried out to remove contamination from the A/C system. Failure to remove contamination from the A/C system, if present, will result in poor A/C performance and/or damage to the new A/C compressor and other components.
- If A/C flushing equipment is available, carry out flushing of the A/C system prior to installing a new A/C compressor.
- If A/C flushing equipment is not available, carry out filtering of the A/C system after a new A/C compressor has been installed.
- Install a new Thermostatic Expansion Valve (TXV) , as directed by the A/C flushing or filtering procedure.
- Install a new receiver/drier cartridge as directed by the A/C flushing or filtering procedure.


NOTICE: Use only the Air Conditioning (A/C) refrigerant compressor oil specified for this vehicle configuration. Use of any A/C refrigerant compressor oil other than what is specified will contaminate and damage the A/C system.

NOTE: Installation of a new receiver/drier cartridge is not required when repairing the A/C system, except when there is physical evidence of contamination from a failed A/C compressor or damage to the receiver/drier cartridge. Damage to the receiver/drier cartridge includes physical damage or moisture contamination. Moisture contamination results only from a complete loss of refrigerant, and equalization of the refrigerant system pressure with atmospheric pressure for a period longer than one hour. If even a slight amount of positive refrigerant pressure is present in the refrigerant system before repairs are carried out, the receiver/drier cartridge does not need to be replaced.

All vehicles

1. If flushing of the A/C system has not been carried out, recover the refrigerant.

2. With the vehicle in NEUTRAL, position it on a hoist.

3. Remove the lower engine splash shield (if equipped).

4. Remove the drive belt from the A/C compressor pulley.

5. Remove the A/C compressor manifold bolt.
- Discard the gasket seals.

- To install, tighten to 15 Nm (133 lb-in).


6. Disconnect the field coil electrical connector.

3.0L vehicles

7. Remove the 3 A/C compressor bolts.
- To install, tighten to 25 Nm (18 lb-ft).


3.5L vehicles

8. Remove the 2 A/C compressor bolts.
- To install, tighten to 25 Nm (18 lb-ft).


9. Remove the A/C compressor stud.
1. Remove the A/C compressor nut.

2. Remove the A/C compressor stud.
- To install, tighten the stud to 9 Nm (80 lb-in).

- To install, tighten the nut to 25 Nm (18 lb-ft).







All vehicles

10. Remove the A/C compressor.

11. To install, reverse the removal procedure.
- Install new gasket seals.

- If filtering of the A/C system is not to be carried out, add the correct amount of clean PAG oil to the refrigerant system.


12. If filtering of the A/C system is not to be carried out, evacuate, leak test and charge the refrigerant system.