Compressor HVAC: Service and Repair

AIR CONDITIONING (A/C) COMPRESSOR







Removal and Installation

CAUTION: If installing a new A/C compressor due to an internal failure of the old unit, carry out the following procedures to remove contamination from the A/C system. Failure to remove contamination from the A/C system, if present, will result in poor A/C performance and/or damage to the new A/C compressor and other components.
- If A/C flushing equipment is available, carry out flushing of the A/C system prior to installing a new A/C compressor.
- If A/C flushing equipment is not available, carry out filtering of the A/C system after a new A/C compressor has been installed.
- Install a new thermostatic expansion valve (TXV), as directed by the A/C flushing or filtering procedure.
- Install a new receiver/drier as directed by the A/C flushing or filtering procedure.

NOTE:
- Installation of a new receiver/drier is not required when repairing the A/C system except when there is physical evidence of system contamination from a failed A/C compressor or damage to the receiver/drier.
- If installing a new A/C compressor, the A/C clutch disc and hub, A/C compressor pulley and A/C clutch field coil must be inspected and transferred from the old unit to the new unit if suitable for reuse.

1. With the vehicle in NEUTRAL, position it on a hoist.
2. Recover the refrigerant.
3. Remove the RH lower engine splash shield.







4. Release the tensioner and remove the drive belt from the A/C compressor pulley.







5. Remove the A/C compressor suction and discharge fitting nuts and disconnect the fittings.
- Discard the O-ring seals and gasket seals.
- To install, tighten to 15 Nm (11 lb-ft).

6. Disconnect the A/C clutch field coil electrical connector.
7. Remove the 3 A/C compressor bolts.
- To install, tighten to 25 Nm (18 lb-ft).

8. Remove the A/C compressor.

9. NOTE: If installing a new A/C compressor, transfer the shipping caps from the new A/C compressor to the old A/C compressor after the refrigerant oil has been measured.

To install, reverse the removal procedure.
- If a new A/C compressor is to be installed, the clutch assembly must be transferred from the old unit to the new unit.
- Install new gasket seals and O-ring seals.
- If not filtering the A/C system, lubricate the refrigerant system with the correct amount of clean PAG oil.

10. Evacuate, leak test and charge the refrigerant system.