Compressor Fitting HVAC: Service and Repair
COMPRESSOR MANIFOLD AND TUBE ASSEMBLYREMOVAL
CAUTION: 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-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 contamination from a failed A/C compressor or damage to the suction accumulator.
All vehicles
1. With the vehicle in NEUTRAL, position it on a hoist.
2. Recover the refrigerant.
Vehicles equipped with auxiliary climate control
3. Disconnect the auxiliary line fitting.
- Discard the O-ring seal.
All vehicles
4. Disconnect the compressor manifold and tube fitting at the suction accumulator.
- Discard the O-ring seal.
5. Remove the tube clamp.
6. Remove the pin-type retainers and the sight shield.
7. Disconnect the condenser inlet fitting.
- Discard the O-ring seal.
8. Disconnect the pressure cutoff switch electrical connector.
4x2 Excursion, 4x2 F-250 and 4x2 F-350 vehicles
9. Remove the RH fender splash shield.
All vehicles
10. Loosen the bolt and remove the compressor manifold and tube assembly.
- Discard the O-ring seals.
11. Remove the pressure cutoff switch.
- Discard the O-ring seal.
INSTALLATION
1. To install, reverse the removal procedure
- Install new O-ring seals lubricated in clean mineral oil.
- Lubricate the refrigerant system with the correct amount of clean PAG oil.
2. Evacuate, leak test and charge the refrigerant system.