Compressor HVAC: Service and Repair

Vehicles that have an inoperative A/C compressor due to internal causes should have the refrigerant system cleaned by flushing or filtering. This removes any debris or contaminants that may be present to prevent damage to the replacement A/C compressor.

System flushing is the preferred method of cleaning. However, if flushing equipment is not available, system filtering may be performed as an alternative.

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. Remove A/C manifold and tube.
2. Lower vehicle.
3. Partially drain coolant.
4. Disconnect upper radiator hose from radiator and position hose aside.
5. Disconnect the engine cooling fan wire assembly.
6. Remove the cooling fan retaining screw(s).
7. Disconnect wire harness from fan shroud.
8. Remove A/C compressor.

Installation
1. Service the replacement A/C compressors with the correct amount of clean Motorcraft YN-12b refrigerant oil or equivalent meeting Ford specification WSH-M1C231-B.
2. Position A/C compressor on top of sway bars.
3. Install cooling fan.
4. Install cooling fan retaining screws. Tighten to 5.2-7.2 N.m (46-63 lb-in).
5. Connect wire harness to fan shroud and connect to fan motor.
6. Connect upper radiator hose to radiator.
7. Install A/C manifold and tube.
8. Fill cooling system.
9. Check the system for proper operation.