Compressor HVAC: Service and Repair

Air Conditioning (A/C) Compressor - 4.6L













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 evaporator core orifice and auxiliary Thermostatic Expansion Valve (TXV) (if equipped), as directed by the A/C flushing or filtering procedure.
- Install a new suction accumulator as directed by the A/C flushing or filtering procedure.


NOTE: A new A/C compressor may come equipped with an A/C clutch disc and hub, A/C compressor pulley and A/C clutch field coil already installed. If these components are not pre-installed, it will be necessary to transfer these parts from the old A/C compressor to the new compressor prior to installation of the A/C compressor if suitable for reuse.

NOTE: Installation of a new suction accumulator is not required when repairing the A/C system except when there is physical evidence of system contamination from a failed A/C compressor or damage to the suction accumulator.

1. With the vehicle in NEUTRAL, position it on a hoist. For additional information, refer to Vehicle Jacking and Lifting.

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

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

4. Remove the RH front wheel and tire. For additional information, refer to Wheels and Tires.

5. Remove the front portion of the RH fender splash shield.

6. Remove the 2 A/C compressor fitting nuts and disconnect the compressor suction fitting.
- Discard the O-ring seal and gasket seal.

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

7. Disconnect the field coil electrical connector and detach the wire harness from the A/C compressor stud.

8. Remove the compressor-to-condenser discharge line bracket nut and detach the bracket.
- To install, tighten to 9 Nm (80 lb-in).

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

10. Remove the lower rear A/C compressor nut.
- To install, tighten to 25 Nm (18 lb-ft).

11. Remove the lower rear A/C compressor stud.
- To install, tighten to 14 Nm (124 lb-in).

12. Remove the upper A/C compressor nut.
- To install, tighten to 25 Nm (18 lb-ft).

13. Remove the upper A/C compressor stud.
- To install, tighten to 14 Nm (124 lb-in).

14. NOTE: The A/C compressor can be removed through the opening at the RH wheel well.

Disconnect the A/C compressor discharge fitting and remove the A/C compressor.

- Discard the O-ring seal and gasket seal.

15. To install, reverse the removal procedure.
- If a new A/C compressor is to be installed, the clutch assembly may need to be transferred from the old unit to the new unit. For additional information, refer to Clutch and Clutch Field Coil Service and Repair.

- Install new O-ring seals and gasket seals.

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

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