Compressor HVAC: Service and Repair

REMOVAL

CAUTION: If installing a new air conditioning compressor due to an internal failure of the old unit, carry out the following procedures to remove contamination from the air conditioning system.
- If A/C flushing equipment is available, carry out air conditioning system flushing prior to installing a new air conditioning compressor.
- If A/C flushing equipment is not available, carry out air conditioning system filtering 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.

NOTE: 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 air conditioning system flushing has not been carried out, recover the refrigerant.
2. Remove the accessory drive belt from the A/C compressor pulley.







3. Disconnect the field coil electrical connector.







4. Remove the nut.







5. Completely loosen the mounting stud.

NOTE: The upper mounting stud must be removed with the A/C compressor.







6. Loosen the bolt and detach the compressor manifold and tube from the A/C compressor.
7. Raise the vehicle.







8. Remove the nut and detach the bracket.







9. Detach the wiring harness clip from the compressor mounting stud.







10. Remove the nut.







11. Remove the stud.







12. Remove the stud.
13. Lower the vehicle.







14. Remove the A/C compressor and the remaining mounting stud.
- Discard the O-ring seals.

INSTALLATION
1. To install, reverse the removal procedure.
- If a new A/C compressor is to be installed, the A/C clutch must be transferred from the old unit.
- If refrigerant system filtering is not to be carried out, lubricate the refrigerant system with the correct amount of clean PAG oil or equivalent.
- Install new O-rings lubricated in PAG oil or equivalent.

2. If refrigerant system filtering is not to be carried out, evacuate, leak test, and charge the refrigerant system.