Compressor HVAC: Service and Repair
TOOLS REQUIREDJ 39400-A Halogen Leak Detector
REMOVAL PROCEDURE
1. Recover the refrigerant. Refer to Refrigerant Recovery and Recharging.
2. Remove the drive belt.
3. Raise and support vehicle. Refer to Lifting and Jacking the Vehicle in General Information.
4. Remove the right front tire and wheel assembly.
5. Remove the front air deflector. Refer to Air Deflector Replacement - Front in Body Front End.
6. Remove the washer bottle. Refer to Washer Solvent Container Replacement in Wipers/Washer Systems.
7. Disconnect the brake line retaining clips from frame in order to allow the brake lines to move during removal of the A/C compressor.
IMPORTANT: Seal the A/C compressor suction and discharge ports after the hoses are removed in order to keep the A/C compressor oil from draining out of the compressor during removal.
All A/C lines, hoses and components should be sealed after removal in order to avoid excessive moisture contamination to the A/C system during servicing.
8. Disconnect the suction hose fitting from the compressor.
9. Disconnect the discharge hose fitting from the compressor.
10. Disconnect the compressor electrical connector.
11. Remove the rear compressor mounting fasteners (3, 4).
12. Remove the lower generator mounting bolt.
13. Remove the front compressor mounting fasteners (1,2).
14. Remove the A/C compressor mounting stud (1).
15. Rotate the compressor, in order to allow the A/C compressor to exit through the wheelhouse opening.
16. Remove the compressor from the vehicle.
INSTALLATION PROCEDURE
IMPORTANT: When replacing the compressor it is necessary to drain and measure the old compressor oil (be sure to rotate the shaft to ensure a complete draining). Drain the oil from the new compressor and add the amount taken from the old compressor. Refer to Refrigerant System Capacities.
1. Install the A/C compressor through the wheelhouse opening.
2. Position the A/C compressor (2) on the mounting surface.
NOTE: Refer to Fastener Notice in Service Precautions.
3. Install the A/C compressor mounting stud (1) through the appropriate compressor mounting ear.
Tighten
Tighten the A/C compressor mounting stud to 25 N.m (18 lb ft).
4. Install the A/C compressor mounting fasteners (1, 2, 3, 4) and hand tighten.
Tighten
^ Tighten the A/C compressor mounting nut (1) to 50 N.m (37 lb ft).
^ Tighten the A/C compressor mounting bolts (2, 3) to 50 N.m (37 lb ft).
^ Tighten the A/C compressor mounting bolt (4) to 25 N.m (18 lb ft).
5. Install the generator mounting bolt.
Tighten
Tighten the bolt to 25 N.m (18 lb ft).
6. Connect the compressor electrical connector.
IMPORTANT: Inspect the seal washers for damage before reinstalling the A/C lines and hoses.
If any damage is noted during inspection, the suspect seal must be replaced.
Flat washer type seals do not require lubrication.
7. Connect the discharge hose fitting to compressor.
Tighten
Tighten the discharge hose nut to 20 N.m (15 lb ft).
8. Connect the suction hose nut to the compressor
Tighten
Tighten the suction hose fitting to the compressor to 20 N.m (15 lb ft).
9. Connect the brake line retaining clips onto the frame.
10. Install the belt.
11. Install the washer bottle. Refer to Washer Solvent Container Replacement in Wipers/Washer Systems.
12. Install the front air deflector. Refer to Air Deflector Replacement - Front in Body Front End.
13. Reinstall the right front tire and wheel assembly.
14. Lower the vehicle.
15. Recharge the A/C system. Refer to Refrigerant Recovery and Recharging.
16. Leak test the fittings of the component using the J 39400-A.