Tools Required

J 39400-A Halogen Leak Detector

1. Recover the refrigerant. Refer to Refrigerant Recovery and Recharging .
2. Remove the cooling fan and shroud. Refer to Cooling Fan and Shroud Replacement in Engine Cooling.
3. Remove the air conditioning (A/C) drive belt. Refer to Air Conditioning Compressor Belt Replacement in Engine Mechanical - 4.8L, 5.3L, and 6.0L.
4. Remove the nut from the compressor hose assembly at the compressor.
5. Remove the compressor hose assembly from the A/C compressor.
6. Discard the sealing washers. Cap all of the openings.
7. Remove the lower coolant hose. Refer to Radiator Outlet Hose Replacement in Engine Cooling.
8. Remove the nut retaining the compressor hose to the condensor.
9. Remove the compressor hose from the condensor.
10. Disconnect the electrical connections.
11. Remove the nut retaining the compressor hose to the accumulator.
12. Remove the compressor hose from the accumulator.
13. Reposition the heater pipe clamps at the water pump.
14. Remove the heater pipes from the water pump.
15. Remove the upper A/C compressor mounting bracket bolts.
16. Remove the lower A/C compressor mounting bracket bolts. The accessory drive belt tensioner will be removed with one of the bolts.
17. Remove the A/C compressor from the bracket.
18. 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 Refrigerant System Capacities .
2. Install the A/C compressor to the bracket.
3. Install the accessory drive belt tensioner to the compressor mounting bracket
4. Install the compressor.
5. Install the lower A/C compressor mounting bracket bolts.

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.

6. Install the A/C compressor mounting bolts.

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

7. Connect the electrical connector to the A/C compressor.
8. Install the upper A/C compressor mounting bracket bolts.

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

9. Install the heater pipes to the water pump.
10. Reposition the clamps.
11. Install the compressor hose to the accumulator using new sealing washers.
12. Install the retaining nut to the accumulator.

Tighten
Tighten the nut to 30 N·m (22 lb ft).

13. Install the compressor hose to the condensor using new sealing washers.

Tighten
Tighten the nut to 30 N·m (22 lb ft).

14. Install the lower coolant hose. Refer to low hose.
15. Install the A/C drive belt. Refer to Air Conditioning Compressor Belt Replacement in Engine Mechanical - 4.8L, 5.3L, and 6.0L.
16. Install the engine drive belt. Refer to Drive Belt Replacement in Engine Mechanical - 4.8L, 5.3L, and 6.0L.
17. Install the compressor hose to the compressor.
18. Install the retaining nut the the compressor.

Tighten
Tighten the nut to 30 N·m (22 lb ft).

19. Install the fan and shroud. Refer to Cooling Fan and Shroud Replacement in Engine Cooling.
20. Fill the cooling system. Refer to Cooling System Draining and Filling In Engine Cooling.
21. Evacuate and recharge the A/C system. Refer to Refrigerant Recovery and Recharging .
22. Leak test the fittings of the component using the J 39400-A .