Expansion Valve: Service and Repair

THERMAL EXPANSION VALVE REPLACEMENT - AUXILIARY

TOOLS REQUIRED
J 39400-A Halogen Leak Detector

REMOVAL PROCEDURE
1. Remove the evaporator core.




2. Gently remove the sealer packed around the thermostatic expansion valve (TXV).
3. Remove the clip that retains the capillary tube to the evaporator core.

IMPORTANT: Note the mounting location and the orientation of the capillary tube on the evaporator core.

4. Remove the nuts that retain the TXV to the evaporator core.
5. Remove the TXV from the core.

INSTALLATION PROCEDURE
1. Install the TXV to the core.




2. Install the nuts that retain the TXV to the evaporator core.

NOTE: Refer to Fastener Notice in Service Precautions.

Tighten
Tighten the nuts that retain the TXV to the evaporator core to 5 N.m (44 lb in).

3. Install the capillary tube and the retaining clip to the evaporator core.

IMPORTANT: Install the retaining clip and the capillary tube in the location and the orientation that was noted during disassembly.

4. Pack the sealer around the TXV as found during disassembly.
5. Install the evaporator core.