Expansion Valve: Service and Repair

THERMOSTATIC EXPANSION VALVE







Removal and Installation

NOTE: Installation of a new receiver/drier is not required when repairing the air conditioning system, except when there is physical evidence of contamination from a failed A/C compressor or damage to the receiver/drier.

1. Recover the refrigerant.
2. Remove the thermostatic expansion valve (TXV) fitting nut and disconnect the fitting.
- Discard the gasket seals.

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

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.