Compressor HVAC: Service and Repair

When A/C compressor is inoperative due to internal causes, clean the refrigerant system by flushing or filtering to remove any debris or contaminants and prevent damage to the replacement A/C compressor.

Replacement of the suction accumulator/drier is necessary when the A/C compressor is replaced.

The A/C evaporator core orifice should be replaced whenever the A/C compressor is replaced for lack of performance or when there is debris in the system.







REMOVAL
1. Disconnect battery ground cable.
2. Discharge A/C system.
3. Disconnect connector and harness from fan assembly.
4. Remove bolt retaining fan assembly and position aside.
5. Raise vehicle.
6. Remove the drive belt from the A/C clutch pulley.
7. Disconnect the A/C compressor-A/C clutch wire at the A/C compressor clutch field coil connector on the A/C compressor.
8. Lower vehicle.
9. Remove A/C manifold and tube. Cap the manifold to prevent dirt and excessive moisture from entering.
10. Remove two bolts and wiring bracket from compressor retaining bolts.
11. Remove three compressor retaining bolts.
12. Remove A/C compressor from vehicle.

INSTALLATION
1. Service the replacement A/C compressor with the correct amount of clean Motorcraft YN-12b Refrigerant Oil or equivalent meeting Ford specification WSH-M1C231-B.

NOTE: A new service replacement A/C compressor is shipped without compressor oil.

2. Position A/C compressor onto engine and install three compressor retaining bolts.
3. Position wiring bracket onto compressor retaining bolts and install two retaining nuts.
4. Lubricate new O-ring seals with clean refrigerant oil and position them in O-ring seal grooves of A/C manifold and tube.
5. Apply Pipe Sealant with Teflon(R) D8AZ-19554-A or equivalent meeting Ford specifications WSK-M2G350-A2 and ESR-M18P7-A to threads of manifold retaining bolt.
6. Position A/C manifold and tube with O-ring seals onto A/C compressor. Install retaining bolt and tighten to 17-23 N.m (13-16 Lb-Ft).

NOTE: When replacing an A/C compressor, use original manifold bolt from removed A/C compressor to attach A/C manifold and tube. Do not use the shipping cap bolt.

7. Connect A/C clutch wire harness connector.
8. Install the drive belt on the A/C clutch pulley and adjust.
9. Install cooling fan assembly.
10. Leak test, evacuate and charge the system. Evacuation
11. Check system for proper operation.