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. Procedures

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

4. Remove the air cleaner housing. Cylinder Head Removal

5. Remove the alternator. Removal and Replacement

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






7. Disconnect the A/C compressor clutch connector, then remove the mounting bolts and the A/C compressor.






8. If necessary, remove the mounting bolts and the A/C compressor bracket.

9. 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. A/C Refrigerant Oil Replacement (With A/C)

- 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 (SP-10) for HFC-134a KEIHIN spiral 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.

- Charge the system. A/C System Charging (With A/C)

10. Do the battery terminal reconnection procedure. Procedures