Tools Required

J 39400-A Halogen Leak Detector

1. Recover the refrigerant. Refer to Refrigerant Recovery and Recharging .
2. Remove the air cleaner. Refer to Air Cleaner Assembly Replacement in Engine Controls-4.3L.
3. Remove the coolant recovery reservoir. Refer to Coolant Recovery Reservoir Replacement in Engine Cooling.




Important: The nuts (4) and ferrules (3) will remain on the evaporator tube. Do not try to remove.

4. Loosen the nuts (4) from the A/C refrigerant filter (1).



5. Remove the A/C refrigerant filter from the evaporator tube (1).

1. Install the new O-rings (2) to the evaporator tube. Refer to O-Ring Replacement .



2. Install the A/C refrigerant filter to the evaporator tube (1) with the flow arrow pointing toward the evaporator.




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. Tighten the nuts (4) to the A/C refrigerant filter (1).

Tighten
Tighten the nuts to 15 N·m (11 lb ft).

4. Evacuate and recharge the A/C system. Refer to Refrigerant Recovery and Recharging .
5. Leak test the fitting(s) of the repaired or reinstalled component using the J 39400-A .
6. Install the coolant recovery reservoir. Refer to Coolant Recovery Reservoir Replacement in Engine Cooling.
7. Install the air cleaner. Refer to Air Cleaner Assembly Replacement in Engine Controls-4.3L.