Compressor HVAC: Service and Repair
AIR CONDITIONING (A/C) COMPRESSORREMOVAL
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 air conditioning system after a new air conditioning 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 air conditioning system except when there is physical evidence of contamination from a failed A/C compressor or damage to the receiver/drier.
4x4 vehicles
1. Remove the cooling fan and shroud.
All vehicles
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.
4. Loosen the bolt and detach the compressor manifold and tube assembly.
- Discard the O-ring seals.
5. Disconnect the field coil electrical connector.
6. Raise the vehicle.
7. Disconnect the crankshaft position sensor electrical connector and detach the wiring harness.
8. Remove the bolts and the stud.
4x2 vehicles
9. Remove the A/C compressor.
4x4 vehicles
10. Lower the vehicle and remove the A/C compressor.
INSTALLATION
All vehicles
1. To install, reverse the removal procedure.
- Install new O-ring seals lubricated in clean PAG oil.
- If filtering of the refrigerant system is not to be carried out, lubricate the refrigerant system with the correct amount of clean PAG oil.
2. If filtering of the refrigerant system is not to be carried out, evacuate, charge and leak test the refrigerant system.