Tools Required

J 39400-A Halogen Leak Detector

Important: The A/C Refrigerant Filter, ACDelco P/N 151697 must be installed to the A/C evaporator tube between the condenser and evaporator. The installation of the A/C Refrigerant Filter eliminates the need for flushing.

1. Recover the refrigerant from the A/C system. Refer to Refrigerant Recovery and Recharging .
2. Remove the front evaporator tube. Refer to Air Conditioning Evaporator Front Tube Replacement steps 1-9.




Important: Measure from the condenser end of the evaporator tube. Cut the tube with a tubing cutter.

3. Measure 420 mm (16.5 in). Cut the plastic insulation and remove enough insulation to install the A/C refrigerant filter.
4. Measure 400  mm (15.7 in) and mark the evaporator tube.
5. Measure 450 mm (17.7 in) and mark the evaporator tube.

Important: Do not allow metal shavings to enter the evaporator tube during cutting or when removing the burrs.

6. Cut the evaporator tube at each marking.
7. Remove any burrs from the cut ends of the evaporator tube.

Important: You must first remove the O-rings from the filter before you seat the ferrules to the evaporator tube.

8. Remove the O-rings from the A/C refrigerant filter.
9. Install one flare nut and one ferrule to the evaporator tube with the tapered end of the ferrule facing the flare nut.

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.

Important: Fully seat the A/C refrigerant filter onto the evaporator tube.

10. Install the A/C refrigerant filter to the evaporator tube with the arrow pointing toward the evaporator.

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

11. Install one flare nut and one ferrule to the other half of the evaporator tube with the tapered end of the ferrule facing the flare nut.
12. Install the A/C refrigerant filter to the evaporator tube.

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

13. Loosen the flare nuts and remove the A/C refrigerant filter from the evaporator tube.
14. Lubricate and install the O-rings to each end of the evaporator tube. Refer to O-Ring Replacement .

Important: Fully seat the filter to the ferrules in order to ensure that the O-rings seat inside of the filter housing.

15. Install the A/C refrigerant filter to the evaporator tube with the arrow pointing toward the evaporator.

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

16. Install the front evaporator tube. Refer to Air Conditioning Evaporator Front Tube Replacement .
17. Evacuate and recharge the A/C system. Refer to Refrigerant Recovery and Recharging .
18. Leak test the fittings of the component using J 39400-A .