Air Conditioning Evaporator Thermal Expansion Valve Replacement

Air Conditioning Evaporator Thermal Expansion Valve Replacement

Special Tools

J 39400-A - Halogen Leak Detector

Removal Procedure

1. Recover the refrigerant from the A/C system. Refer to Refrigerant Recovery and Recharging Refrigerant Recovery and Recharging.





2. Remove the evaporator tube to thermal expansion valve (TXV) nut (1).

3. Disconnect the evaporator outlet and inlet tube from the TXV.

4. Remove and discard the sealing washers.

Note:
Cap or tape the open evaporator inlet and outlet tubes immediately to prevent contamination of the refrigerant system.

5. Cap off the evaporator inlet and outlet tube.





6. Remove the TXV to evaporator bolts.

7. Remove the TXV from the evaporator core.

8. Remove and discard the sealing washers.

Installation Procedure

1. Install the new sealing washers onto the evaporator core. Refer to Air Conditioning System Seal Replacement Air Conditioning System Seal Replacement.





2. Install the TXV to the evaporator core.

Caution:
Refer to Fastener Caution Fastener Caution.

3. Install the TXV to evaporator bolts and tighten to 7 Nm (62 lb in).

4. Remove the cap or tape from the evaporator inlet and outlet tubes.

5. Install the new sealing washers onto the evaporator inlet and outlet tubes. Refer to Air Conditioning System Seal Replacement Air Conditioning System Seal Replacement.

6. Install the evaporator outlet and inlet tube to the TXV.





7. Install the evaporator tube nut (1) and tighten to 17 Nm (13 lb ft).

8. Evacuate and recharge the A/C system. Refer to Refrigerant Recovery and Recharging Refrigerant Recovery and Recharging.

9. Leak test the fittings of the component using J 39400-A - Halogen Leak Detector.