Expansion Block/Orifice Tube: Service and Repair

Air Conditioning Evaporator Thermal Expansion Valve Replacement

Special Tools

J 39400-A Halogen Leak Detector

Removal Procedure

1. Remove the HVAC module. Refer to Air Conditioning and Heater Module Assembly Removal and Installation (Service and Repair).




2. Remove the insulation (1) from the thermal expansion valve (TXV). Discard the used insulation.




3. Remove the HVAC line clamp screw.




4. Remove the HVAC line clamp.




5. Remove the bolts (1) that secure the TXV to the evaporator.




6. Remove the TXV line bracket.




7. Remove the TXV from the evaporator core.
8. Separate the TXV from the A/C lines by pulling straight out.
9. Remove the TXV.

Installation Procedure

1. Lubricate the O-rings. Refer to Air Conditioning O-Ring Seal Replacement (Service and Repair).
2. Install the A/C lines into the TXV.




3. Carefully slide the TXV onto the evaporator core until seated.




4. Install the TXV line bracket.





Caution: Refer to Fastener Caution (Fastener Caution).

5. Install the bolts (1) that secure the TXV to the evaporator and tighten to 3.5 Nm (31 lb in).




6. Install the HVAC line clamp.




7. Install the HVAC line clamp screw and tighten to 1 Nm (8 lb in).
8. Install the HVAC module. Refer to Air Conditioning and Heater Module Assembly Removal and Installation (Service and Repair).




9. Install new insulation (1) onto the lines and TXV.