Compressor HVAC: Service and Repair

AIR CONDITIONING (A/C) COMPRESSOR

Removal and Installation

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 A/C compressor lubricant. PAG Refrigerant Compressor Oil F7AZ-19D589-DA (Motorcraft YN-12-C) or equivalent meeting Ford specification WSH-M1C231-B only should be used as an A/C compressor lubricant.

NOTE:
- If installing a new A/C compressor, the A/C clutch disc and hub, A/C compressor pulley and A/C clutch field coil must be inspected and transferred from the old unit to the new unit if suitable for reuse.
- 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. If flushing of the air conditioning system has not been performed, recover the refrigerant.
2. Remove the RH and LH cooling fans.







3. Loosen the tensioner and remove the drive belt from the A/C compressor pulley.







4. Disconnect the compressor manifold and tube assembly.
- Discard the O-ring seals.

5. Disconnect the compressor field coil electrical connector.







6. NOTE: The upper LH A/C compressor bolt must be removed with the A/C compressor.

Remove the four A/C compressor mounting bolts.







7. Remove the A/C compressor.
8. To install, reverse the removal procedure.
- If a new A/C compressor is to be installed, the clutch assembly must be transferred from the old unit to the new unit.
- Install new O-ring seals lubricated in clean mineral oil.
- If not filtering the refrigerant system, lubricate the refrigerant system with the correct amount of clean PAG oil.

9. If not filtering the refrigerant system, evacuate, leak test and charge the A/C system.