Compressor HVAC: Service and Repair

AIR CONDITIONING (A/C) COMPRESSOR

REMOVAL

CAUTION:
- If installing a new air conditioning compressor due to an internal failure of the old unit, you must carry out the following procedures to remove contamination from the air conditioning system.
- If A/C flushing equipment is available, carry out flushing of the air conditioning system prior to installing a new air conditioning compressor.
- If A/C flushing equipment is not available, carry out filtering of the air conditioning system after a new air conditioning compressor has been installed.
- Install a new evaporator core orifice 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.

- Refrigerant Compressor Oil (Mineral Oil) F73Z-19577-AA (Motorcraft YN-9-A) should be used to lubricate R-134a refrigerant system O-ring seals only and should not be added to R-134a refrigerant systems as an AC compressor lubricant. PAG Refrigerant Compressor Oil F7AZ-19589-DA (Motorcraft YN-12-C) or equivalent meeting Ford specification WSH-M1C231-B only should be used as an A/C compressor lubricant.

NOTE: Installation of a new suction accumulator is not required when repairing the air conditioning 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.
2. If flushing of the air conditioning system has not been carried out, recover the refrigerant.
3. Remove the accessory drive belt from the A/C compressor pulley.







4. NOTE: Access the compressor manifold and tube assembly bolt from the RH front fender well, between the frame and body.

Loosen the bolt and detach the compressor manifold and tube assembly from the A/C compressor.

5. Remove the splash shield.







6. Disconnect and detach the crankshaft position sensor electrical connector and position the wire harness aside.







7. Detach the wire harness from the bracket.







8. Disconnect the A/C compressor clutch field coil electrical connector.







9. Remove the A/C compressor mounting bolt.







10. Remove the bolts and the A/C compressor.
- Discard the O-ring seals.

INSTALLATION
1. To install, reverse the removal procedure.
- Install new O-ring seals lubricated in clean mineral oil.
- If filtering of the refrigerant system is not to be carried out, lubricate the refrigerant system with the correct amount of clean PAG oil.

2. If filtering of the refrigerant system is not to be carried out, evacuate, leak test and charge the refrigerant system.