Air Conditioning Compressor Replacement LL8

Tools Required

J 39400-A Halogen Leak Detector

1. Recover the refrigerant. Refer to Refrigerant Recovery and Recharging .
2. Remove the generator. Refer to Generator Replacement .
3. Remove the idler pulley. Refer to Drive Belt Idler Pulley Replacement .
4. Disconnect the compressor electrical connectors.

Important: Some system pressure may still exist in the A/C compressor crankcase after you evacuate the system.

5. Remove the compressor hose assembly bolt from the compressor.
6. Remove the compressor hose assembly block from the compressor.



7. Remove the compressor mounting bolts from the compressor (1).
8. Remove the compressor .
9. Drain and measure the compressor oil. Refer to Air Conditioning Compressor Oil Balancing .

1. Add the proper amount of oil to the replacement compressor. Refer to Air Conditioning Compressor Oil Balancing .
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 compressor mounting bolts to the compressor (1).

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

4. Install the compressor hose assembly block to the compressor.



5. Install the compressor hose assembly bolt to the compressor (1).

Tighten
Tighten the bolt to 33 N·m (24 lb ft).

6. Connect the compressor electrical connectors.
7. Install the idler pulley. Refer to Drive Belt Idler Pulley Replacement .
8. Install the generator. Refer to Generator Replacement .
9. Evacuate and recharge the A/C system. Refer to Refrigerant Recovery and Recharging .
10. Leak test the fittings of the components using the J 39400-A .

Air Conditioning Compressor Replacement LM4

Tools Required

J 39400-A Halogen Leak Detector

1. Recover the refrigerant. Refer to Refrigerant Recovery and Recharging .
2. Remove the washer solvent container. Refer to Windshield Washer Solvent Container Replacement in Wipers/Washer System.
3. Remove the air cleaner resonator outlet duct. Refer to Air Cleaner Resonator Outlet Duct Replacement in Engine Controls.
4. Remove the cooling fan and shroud. Refer to Cooling Fan and Shroud Replacement in Engine Cooling.
5. Release the tension on the air conditioning drive belt.
6. Reposition the air conditioning drive belt from the compressor pulley.
7. Remove the compressor hose assembly nut from the compressor.
8. Remove the compressor hose assembly from the compressor.



9. Remove the upper A/C compressor mounting bracket bolts.
10. Remove the lower coolant hose. Refer to Radiator Inlet Hose Replacement in Engine Cooling.
11. Raise the vehicle. Refer to Lifting and Jacking the Vehicle in General Information.
12. Disconnect the electrical connection from the compressor.
13. Turn the right tire to gain access to the remaining compressor mounting bolts.
14. Remove the lower A/C compressor mounting bracket bolts (3).
15. Lower the vehicle.
16. Reposition the compressor and mounting bracket to access the remaining compressor to bracket bolts.
17. Remove the upper A/C compressor mounting bolts (4).
18. Remove the A/C compressor.
19. Remove the A/C compressor bracket.
20. If replacing the A/C compressor. Refer to Compressor Oil Balancing .

1. Add the proper amount of PAG oil to the compressor crankcase. Refer to Compressor Oil Balancing .
2. Position the A/C compressor mounting bracket partially into the vehicle.
3. Position the A/C compressor partially into the vehicle.

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.

4. Install the upper compressor mounting bolts into the compressor mounting bracket.

Tighten
Tighten the upper rear bolts to 50 N·m (37 lb ft).




5. Install the upper compressor mounting bolts (4) into the compressor and bracket assembly.
6. Position the compressor and bracket assembly into the correct location on the engine.
7. Tighten the upper compressor mounting bolts (4).

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

8. Raise the vehicle
9. Start the lower compressor mounting bolts (3).

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

10. Connect the electrical connector to the A/C compressor.
11. Raise the vehicle.
12. Install the lower coolant hose. Refer to Radiator Inlet Hose Replacement in Engine Cooling.
13. Install the compressor hose assembly to the compressor.
14. Install the compressor hose assembly nut to the compressor.

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

15. Install the accessory drive belt to the tensioner.
16. Install the cooling fan and shroud. Refer to Cooling Fan and Shroud Replacement in Engine Cooling.
17. Install the air cleaner resonator outlet duct. Refer to Air Cleaner Resonator Outlet Duct Replacement in Engine Controls.
18. Install the washer solvent container. Refer to Windshield Washer Solvent Container Replacement in Wipers/Washer System.
19. Fill the cooling system. Refer to Cooling System Draining and Filling In Engine Cooling.
20. Evacuate and recharge the A/C system. Refer to Refrigerant Recovery and Recharging .
21. Leak test the fittings of the component using the J 39400-A .