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.
- If A/C flushing equipment is available, carry out flushing of the air conditioning system prior to installing a new air conditioning compressor.
- If A/C flushing equipment is not available, carry out filtering of the air conditioning system after a new air conditioning compressor has been installed.
- Install a new evaporator core orifice.
- Install a new suction accumulator.

NOTE:
- Installation of a new suction accumulator is not required when repairing the A/C system, except when there is physical evidence of contamination from a failed A/C compressor or damage to the suction accumulator.
- 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 drive belt form the A/C compressor pulley.
4. Loosen the compressor manifold bolt and detach the compressor manifold and tube assembly.
- Discard the O-ring seals.
- To install, tighten to 21 Nm (15 lb-ft).

5. Remove the 3 splash shield pin-type retainers and the compressor splash shield.
6. Disconnect the crankshaft position sensor electrical connector.
7. Detach the wire harness bracket.
8. Disconnect the clutch field coil electrical connector.
9. Remove the 3 A/C compressor bolts and the A/C compressor.
- To install, tighten to 25 Nm (18 lb-ft).

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

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