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 system contamination from a failed A/C compressor or damage to the suction accumulator.

1. With the vehicle in NEUTRAL, position it on a hoist.
2. Recover the A/C refrigerant.
3. Remove the accessory drive belt.
4. Disconnect the A/C compressor electrical connector.
5. Disconnect the suction accumulator to compressor line.
- Remove the suction accumulator to compressor line bolt.
- To install, tighten to 20 Nm (15 lb-ft).

6. Disconnect the compressor to condenser discharge line.
- Remove the compressor to condenser discharge line bolt.
- To install, tighten to 20 Nm (15 lb-ft).

7. Remove and discard the O-rings.
8. Remove the 3 bolts and the A/C compressor.
- To install, tighten to 25 Nm (18 lb-ft).

9. NOTE: New O-ring seals lubricated with clean mineral oil must be installed before connecting any A/C fitting which has been disconnected.

To install, reverse the removal procedure.
- If not filtering the A/C system, lubricate the refrigerant system with the correct amount of clean PAG oil.
- Evacuate, leak test, and charge the refrigerant system.