Air Conditioning Compressor Replacement (Heavy Duty Cooling)

Compressor Replacement (LH2 - Heavy Duty Cooling)


Tools Required
* J 39400-A Halogen Leak Detector
* J 41240-5A Fan Clutch Wrench



Removal Procedure





1. Recover the refrigerant. Refer to Refrigerant Recovery and Recharging (Refrigerant Recovery and Recharging) .
2. Remove the air cleaner outlet duct. Refer to Air Cleaner Outlet Duct Replacement (Service and Repair) .
3. Remove the drive belt tensioner. Refer to Drive Belt Tensioner Replacement - Air Conditioning, Power Steering, and Water Pump (Drive Belt Tensioner Replacement - Air Conditioning, Power Steering, and Water Pump) .
4. Raise and support the vehicle. Refer to Lifting and Jacking the Vehicle (Service and Repair) .
5. Remove the LH front wheel. Refer to Tire and Wheel Removal and Installation (Service and Repair) .
6. Remove the LH front splash shield retainers.
7. Remove the LH front splash shield (1).




8. Remove the front air deflector retainers.
9. Remove the front air deflector.




10. Remove the suction line bolt from the A/C compressor.
11. Disconnect the suction line from the A/C compressor.
12. Remove and discard the O-ring.




13. Remove the discharge line bolt from the A/C compressor.
14. Disconnect the discharge line from the A/C compressor.
15. Remove and discard the O-ring.
16. Disconnect the A/C compressor electrical connector.
17. Remove the engine oil filter. Refer to Engine Oil and Oil Filter Replacement (Service and Repair) .
18. Remove the A/C compressor mounting bolts.
19. Lower the vehicle.




20. Loosen the fan nut from the crank adapter shaft using J 41240-5A .

Important: Do not attempt to remove the fan from the vehicle. The fan should be gently repositioned aside to allow for adequate clearance during the A/C compressor replacement.


21. Disconnect the fan from the crank adapter shaft and gently reposition the fan aside.
22. Remove the A/C compressor.
23. Replace the desiccant bag if the following conditions exist. Refer to Air Conditioning Refrigerant Desiccant Replacement (Service and Repair) .

* Color of PAG oil is brown or black
* Presence of foreign substances


Important: Replacement A/C compressors are charged with PAG oil. Refer to Refrigerant System Capacities ([1][2]Capacity Specifications) .


24. If replacing the A/C compressor, balance the compressor. Refer to Compressor Oil Balancing (Service and Repair) .



Installation Procedure

1. Install the A/C compressor.

Notice: Refer to Fastener Notice (Fastener Notice) .

2. Connect the fan from the crank adapter shaft.




3. Tighten the fan nut to the crank adapter shaft using J 41240-5A .

Tighten the nut to 100 N.m (74 lb ft).

4. Raise the vehicle.

Important: Do not tighten the A/C compressor mounting bolts until all bolts are thoroughly started.


5. Install the A/C compressor mounting bolts.

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

6. Install the engine oil filter. Refer to Engine Oil and Oil Filter Replacement (Service and Repair) .
7. Connect the A/C compressor electrical connector.




8. Install a new O-ring to the discharge line. Refer to O-Ring Replacement (Service and Repair) .
9. Connect the discharge line to the A/C compressor.
10. Install the discharge line bolt to the A/C compressor.

Tighten the bolt to 9 N.m (80 lb in).

11. Install a new O-ring to the suction line. Refer to O-Ring Replacement (Service and Repair) .




12. Connect the suction line to the A/C compressor.
13. Install the suction line bolt to the A/C compressor.

Tighten the bolt to 9 N.m (80 lb in).





14. Install the front air deflector.
15. Install the front air deflector retainers.
16. Install the LH front splash shield (1).
17. Install the LH front splash shield retainers.
18. Install the LH front wheel. Refer to Tire and Wheel Removal and Installation (Service and Repair) .
19. Lower the vehicle.
20. Install the drive tensioner. Refer to Drive Belt Tensioner Replacement - Air Conditioning, Power Steering, and Water Pump (Drive Belt Tensioner Replacement - Air Conditioning, Power Steering, and Water Pump) .




21. Install the air cleaner outlet duct. Refer to Air Cleaner Outlet Duct Replacement (Service and Repair) .
22. Evacuate and recharge the A/C system. Refer to Refrigerant Recovery and Recharging (Refrigerant Recovery and Recharging) .
23. Leak test the fittings of the component using the J 39400-A .