Expansion Valve: Service and Repair

Thermostatic Expansion Valve













Removal and Installation

1. Recover the refrigerant.

2. Remove the Thermostatic Expansion Valve (TXV) fitting nut and disconnect the fitting.
- Discard the gasket seals.

- To install, tighten to 15 Nm (133 lb-in).

3. Remove the 2 TXV bolts and the TXV.
- Discard the O-ring seals.

- To install, tighten to 8 Nm (71 lb-in).

4. To install, reverse the reverse the removal procedure.
- If the TXV stud has become loose during removal, or has been removed for any reason, tighten the TXV stud to 6 Nm (53 lb-in) before the TXV fitting nut is reinstalled.

- Install new O-ring seals and gasket seals.

5. Evacuate, leak test and charge the refrigerant system.