Air Conditioning Compressor Replacement L36

Tools Required

J 39400-A Halogen Leak Detector

1. Recover the refrigerant. Refer to Refrigerant Recovery and Recharging .
2. Disconnect the negative battery cable. Refer to Battery Negative Cable Disconnection and Connection in Engine Electrical.
3. Remove the accessory drive belt. Refer to Drive Belt Replacement in Engine Mechanical - 3.8L.
4. Remove the right wheelhouse extension. Refer to Front Wheelhouse Liner Replacement in Body Front End.
5. Remove the lower air deflector. Refer to Front Air Deflector Replacement in Body Front End.
6. Disconnect the electrical connector from the compressor.



7. Disconnect the electrical connector from the air conditioning (A/C) pressure sensor.



8. Remove the retaining bolt from the wiring harness bracket.



9. Remove the compressor hose nut from the compressor.
10. Remove the compressor hose from the compressor.
11. Remove and discard the sealing washers.



12. Remove the front compressor mounting nuts.
13. Remove the rear compressor mounting bolt.
14. Remove the compressor.
15. If replacing the compressor, balance the oil. Refer to Compressor Oil Balancing .

Important: The replacement compressor is shipped without polyalkylene glycol (PAG) oil.

1. Add the proper amount of PAG oil to the compressor. Refer to Refrigerant System Capacities for compressor oil capacity.



2. Install the compressor.

Notice: Use the correct fastener in the correct location. Replacement fasteners must be the correct part number for that application. Fasteners requiring replacement or fasteners requiring the use of thread locking compound or sealant are identified in the service procedure. Do not use paints, lubricants, or corrosion inhibitors on fasteners or fastener joint surfaces unless specified. These coatings affect fastener torque and joint clamping force and may damage the fastener. Use the correct tightening sequence and specifications when installing fasteners in order to avoid damage to parts and systems.

3. Install the front mounting nuts to the compressor.

Tighten
Tighten the nuts to 50 N·m (37 lb ft).

4. Install the rear bolt to the compressor.

Tighten
Tighten the bolt to 50 N·m (37 lb ft).




5. Install new sealing washers to the compressor hose. Refer to Sealing Washer Replacement .
6. Install the compressor hose to the compressor.
7. Install the compressor hose nut to the compressor.

Tighten
Tighten the nut to 39 N·m (31 lb ft).

8. Connect the electrical connector to the compressor.



9. Connect the electrical connector to the A/C pressure sensor.



10. Install the retaining bolt to the wiring harness bracket.

Tighten
Tighten the bolt to 12 N·m (9 lb ft).

11. Install the accessory drive belt. Refer to Drive Belt Replacement in Engine Mechanical - 3.8L.
12. Connect the negative battery cable. Refer to Battery Negative Cable Disconnection and Connection in Engine Electrical.
13. Evacuate and recharge the A/C system. Refer to Refrigerant Recovery and Recharging .
14. Leak test the fittings of the component using the J 39400-A .
15. Install the lower air deflector. Refer to Front Air Deflector Replacement in Body Front End.
16. Install the right wheelhouse extension. Refer to Front Wheelhouse Liner Replacement in Body Front End.

Air Conditioning Compressor Replacement LD8

Tools Required

J 39400-A Halogen Leak Detector

1. Recover the refrigerant. Refer to Refrigerant Recovery and Recharging .
2. Remove the drive belt. Refer to Drive Belt Replacement in Engine Mechanical - 4.6L.
3. Raise and support the vehicle. Refer to Lifting and Jacking the Vehicle in General Information.
4. Remove the right fascia extension. Refer to Front Bumper Fascia Extension Replacement in Body Front End.
5. Remove the lower air deflector. Refer to Front Air Deflector Replacement in Body Front End.



6. Disconnect the compressor electrical connector.
7. Disconnect the high pressure cut out switch electrical connector.

Important: Seal the compressor suction and discharge ports and the hoses, after the hoses are removed in order to keep contaminants from entering the air conditioning (A/C) system and oil from draining out of the compressor during removal.




8. Remove the discharge hose nut (2) from the compressor.
9. Remove the discharge hose (3) from the compressor. Position the hose away from the compressor.
10. Remove the engine oil cooler hose to cooling fan retainer bolt.
11. Remove the engine oil cooler hose retainer.
12. Remove the suction hose nut (2) from the compressor.



13. Remove the suction hose (1) from the compressor. Position the hose away from the compressor.
14. Remove and discard the sealing washers.
15. Remove the washer solvent container mounting nuts.
16. Position the washer solvent container away from the mounting studs. Complete removal of the container is not necessary.
17. Disconnect the brake line retaining clips from the engine frame in order to allow the brake lines to move during removal of the compressor.



18. Remove the compressor mounting fasteners (1, 2, 3, 4).



19. Remove the compressor (2) mounting stud (1).



20. Rotate the compressor in order to allow the compressor to exit through the wheelhouse opening. The power steering hose will need to be flexed over the compressor studs during removal.

Important: If replacing the compressor, balance the compressor oil. Refer to Compressor Oil Balancing .

21. Remove the compressor from the vehicle.

1. Install the compressor through the wheelhouse opening.



2. Position the compressor (2) on the mounting surface.

Notice: Use the correct fastener in the correct location. Replacement fasteners must be the correct part number for that application. Fasteners requiring replacement or fasteners requiring the use of thread locking compound or sealant are identified in the service procedure. Do not use paints, lubricants, or corrosion inhibitors on fasteners or fastener joint surfaces unless specified. These coatings affect fastener torque and joint clamping force and may damage the fastener. Use the correct tightening sequence and specifications when installing fasteners in order to avoid damage to parts and systems.

3. Install the compressor mounting stud (1) to the engine.

Tighten
Tighten the stud to 25 N·m (18 lb ft).




4. Install all of the compressor mounting fasteners (1, 2, 3, 4) and hand tighten the fasteners.
5. Tighten the fasteners in the following sequence:

Tighten

1. Tighten the compressor mounting stud nut (1) to 50 N·m (37 lb ft).
2. Tighten the upper rear compressor mounting bolt (3) to 50 N·m (37 lb ft).
3. Tighten the front compressor mounting bolt (2) to 50 N·m (37 lb ft).
4. Tighten the last lower rear compressor mounting bolt (4) to 25 N·m (18 lb ft).
6. Position the washer solvent container to the mounting studs.
7. Install the washer solvent container mounting nuts.

Tighten
Tighten the nuts to 6 N·m (53 lb in).

8. Install new sealing washers to the suction hose and discharge hose. Refer to Sealing Washer Replacement .



9. Connect the suction hose (1) to the compressor.
10. Install the suction hose nut (2) to the compressor.

Tighten
Tighten the nut to 16 N·m (12 lb ft).




11. Connect the discharge hose (3) to the compressor.
12. Install the discharge hose nut (2) to the compressor.

Tighten
Tighten the nut to 16 N·m (12 lb ft).

13. Install the engine oil cooler hose retainer.
14. Install the engine oil cooler hose to cooling fan retainer bolt.

Tighten
Tighten the nut to 10 N·m (89 lb in).




15. Connect the compressor electrical connector.
16. Connect the high pressure cut out switch electrical connector.
17. Connect the brake line retaining clips to the frame.
18. Install the drive belt. Refer to Drive Belt Replacement in Engine Mechanical - 4.6L.
19. Install the lower air deflector. Refer to Front Air Deflector Replacement in Body Front End.
20. Install the fascia extension. Refer to Front Bumper Fascia Extension Replacement in Body Front End.
21. Lower the vehicle. Refer to Lifting and Jacking the Vehicle in General Information.
22. Evacuate and recharge the A/C system. Refer to Refrigerant Recovery and Recharging .
23. Leak test the fittings of the component using the J 39400-A .