Compressor HVAC: Service and Repair

A/C Compressor Replacement

1. If the A/C compressor is marginally operable, run the engine at idle speed, and let the air conditioning work for a few minutes, then shut the engine off.

2. Do the battery terminal disconnection procedure.

3. Recover the refrigerant with a recovery/recycling/charging station A/C Refrigerant Recovery.

4. Remove the coolant reservoir.

5. Remove the power steering pump Removal and Replacement.

6. Remove the alternator Removal and Replacement.

7. Remove the front grille cover and bulkhead Service and Repair.

8. Remove the A/C compressor clutch connector (A) from the A/C condenser fan shroud (B), then open the wire harness clip. Disconnect the A/C condenser fan connector (C). Remove the upper mounting bolts and the A/C condenser fan shroud. Be careful not to damage the radiator fins when removing the A/C condenser fan shroud.






9. Disconnect the A/C compressor clutch connector (A), remove the nuts, then disconnect the suction line (B) and the discharge line (C) from the A/C compressor. Plug or cap the lines immediately after disconnecting them to avoid moisture and dust contamination.






10. Remove the mounting bolts and the A/C compressor. Be careful not to damage the radiator fins when removing the A/C compressor.






11. Install the A/C compressor in the reverse order of removal, and note these items:

- If you're installing a new A/C compressor, you must calculate the amount of refrigerant oil to be removed from it Service and Repair.
- Replace the O-rings with new ones at each fitting, and apply a thin coat of refrigerant oil before installing them. Be sure to use the correct O-rings for HFC-134a (R-134a) to avoid leakage.
- Use refrigerant oil (DENSO ND-OIL 8) for HFC-134a DENSO piston type A/C compressor only.
- To avoid contamination, do not return the oil to the container once dispensed, and never mix it with other refrigerant oils.
- Immediately after using the oil, reinstall the cap on the container, and seal it to avoid moisture absorption.
- Do not spill the refrigerant oil on the vehicle; it may damage the paint; if the refrigerant oil contacts the paint, wash it off immediately.
- Be careful not to damage the radiator fins when installing the A/C compressor and the A/C condenser fan shroud.
- Charge the system A/C System Charging.

12. Do the battery terminal reconnection procedure.