Expansion Valve: Service and Repair

THERMOSTATIC EXPANSION VALVE







Removal and Installation

NOTE:
- Installation of a new receiver/drier desiccant bag is not required when repairing the A/C system, except when there is physical evidence of contamination from a failed A/C compressor or damage to the receiver/drier desiccant bag. Damage to the receiver/drier desiccant bag includes physical damage to the receiver/drier desiccant bag or moisture contamination. Moisture contamination results only from a complete loss of refrigerant and equalization of the refrigerant system pressure with atmospheric pressure for a period longer than one hour. If even a slight amount of positive refrigerant pressure is present in the system before repairs are carried out, the receiver/drier desiccant bag should not be replaced.
- The O-ring seals used on this vehicle are not interchangeable with all similarly sized O-ring seals used on other Ford products. Use only the O-ring seals specified for this vehicle in the Ford master parts catalog.

1. Recover the refrigerant.
2. Remove the thermostatic expansion valve (TXV) fitting nut and disconnect the fitting.
- Discard the O-ring seals.
- To install, tighten to 8 Nm (71 lb-in).

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

5. To install, reverse the removal procedure.
- Install new O-ring seals lubricated in clean PAG oil.
- Lubricate the refrigerant system with the correct amount of clean PAG oil.

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