Compressor HVAC: Service and Repair
AIR CONDITIONING (A/C) COMPRESSORRemoval and Installation
CAUTION: If installing a new air conditioning (A/C) compressor due to an internal failure of the old unit, you must carry out the following procedures to remove contamination from the air conditioning system:
- If A/C flushing equipment is available, carry out flushing of the air conditioning system.
- 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:
- 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
- Installation of a new receiver/drier is not required when repairing the air conditioning system except when there is physical evidence of contamination from a failed A/C compressor or damage to the receiver/drier.
All vehicles
1. With the vehicle in NEUTRAL, position it on a hoist.
2. If flushing of the air conditioning system has not been carried out, recover the refrigerant.
3. Remove the drive belt from the A/C compressor pulley.
4x4 vehicles
4. Remove screws and the lower cooling fan shroud.
All vehicles
5. Loosen the bolt and detach the compressor manifold and tube assembly.
- Discard the O-ring seals.
6. Remove the nut and detach the line bracket.
7. Position the wire harness aside.
1 Disconnect the field coil electrical connector.
2 Disconnect the crankshaft position sensor electrical connector.
3 Remove the nut and position the wire harness aside.
8. Remove the bolts and the stud.
9. Remove the A/C compressor.
10. 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 O-ring seals.
- If filtering of the refrigerant system is not to be carried out, lubricate the refrigerant system with the correct amount of clean PAG oil.
11. If filtering of the refrigerant system is not to be carried out, evacuate, charge and leak test the refrigerant system.