Air Conditioning (A/C) Compressor — 5.0L and 5.8L

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. For additional information, refer to Section 412-00 .
• 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. For additional information, refer to Section 412-00 .
• Install a new Thermostatic Expansion Valve (TXV), as directed by the A/C flushing or filtering procedure.
• Install a new receiver/drier as directed by the A/C flushing or filtering procedure.

NOTE: Installation of a new receiver/drier 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. Damage to the receiver/drier includes leaks in the receiver/drier, physical damage to the receiver/drier shell or desiccant, 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 system before repairs are carried out, the receiver/drier should not be replaced.

All vehicles

1. Position the vehicle on a hoist with the gear selector in NEUTRAL. For additional information, refer to Section 412-00 .

2. If filtering of the refrigerant system has not been carried out, recover the refrigerant. For additional information, refer to Section 412-00 .

3. Remove the drive belt from the A/C compressor pulley. For additional information, refer to Section 303-05 .

5.8L (4V) vehicles

4. Disconnect the Crankshaft Position (CKP) sensor electrical connector.

All vehicles

5. Remove the 2 A/C compressor fitting nuts and disconnect the fittings.
   • Discard the O-ring seals and gasket seals.
   • To install, tighten to 15 Nm (133 lb-ft).

6. Remove the 3 bolts and lower the underbody shield.
   • To install, tighten to 10 Nm (89 lb-in).

7. Disconnect the A/C clutch field coil electrical connector and detach the wire harness from the A/C compressor studs and the rear of the A/C compressor.

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

9. NOTE: Boss 302 equipped vehicles, lower the vehicle and remove the A/C compressor from the engine compartment.

   Remove the A/C compressor.

10. To install, reverse the removal procedure.
    • If flushing of the A/C system is not to be carried out, add the correct amount of clean PAG oil to the refrigerant system. For additional information, refer to the Refrigerant Oil Adding procedure in Section 412-00 .