Compressor HVAC: Service and Repair

Air Conditioning (A/C) Compressor - 4.0L SOHC













Removal and Installation

NOTICE: If installing a new Air Conditioning (AC) 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. If flushing of the A/C system has not been carried out, recover the refrigerant.

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

3. Remove the 2 A/C compressor fitting nuts.
- Discard the O-ring seals and gasket seals.

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

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

5. Remove the compressor-to-condenser discharge line bracket nut and detach the bracket.
- To install, tighten to 7 Nm (62 lb-in).

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

7. Remove the 2 A/C compressor studs.
- To install, tighten to 4 Nm (35 lb-in).

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

9. Remove the A/C compressor.

10. 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.

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