Compressor Fitting HVAC: Service and Repair

NOTE: Two different O-ring seals are used on the A/C manifold and tube and they are not interchangeable. One is black and is used with aluminum manifolds. The other O-ring seal is red and is used with brazed steel manifolds. Either O-ring seal must be replaced with one of the same color.

REMOVAL
1. Recover refrigerant from system. Observe all safety precautions. Refrigerant Recovery
2. Remove manifold attaching bolt.
3. Disconnect pressure cutoff switch connector.
4. Remove A/C tube lock coupling clips at the condenser tube and at the suction accumulator/drier. Disconnect spring lock coupling at these two locations.
5. Remove the A/C manifold and tube.

INSTALLATION
1. Position the A/C manifold and tube.
2. Connect the spring lock couplings.
3. Connect the pressure cutoff switch connector.
4. Lubricate new O-ring seals with clean refrigerant oil and position them in O-ring seal grooves of manifold. Use only the O-ring seals specified for the type of manifold being used.
5. Apply Pipe Sealant with Teflon D8AZ-19554-A or equivalent meeting Ford specifications WSK-M2G350-A2 and ESR-M18P7-A to threads of manifold retaining bolt.
6. Position manifold with O-ring seals to A/C compressor. Install retaining bolt and tighten to 17-23 Nm (12.5-17.0 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 to new A/C compressor. DO NOT USE THE SHIPPING CAP BOLTS.

7. Leak test, evacuate, and charge system following recommended procedures. Observe all safety precautions. Service and Repair