Thermostatic Expansion Valve

THERMOSTATIC EXPANSION VALVE







Removal and Installation

CAUTION: Refrigerant Compressor Oil (mineral oil) F73Z-19577-AA (Motorcraft YN-9-A) should be used to lubricate R-134a refrigerant system O-ring seals only and should not be added to the R-134a refrigerant system as an A/C compressor lubricant. PAG Refrigerant Compressor Oil F7AZ-19D589-DA (Motorcraft YN-12-C) or equivalent meeting Ford specification WSH-M1C231-B only should be used as an A/C compressor lubricant.

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.
- New O-ring seals, lubricated in clean mineral oil, must be installed before reconnecting any A/C fitting which has been disconnected.

1. Recover the refrigerant.
2. Disconnect the thermostatic expansion valve (TXV) harness electrical connector.
3. Remove the 2 A/C line fittings.
- Discard the O-ring seals.

4. Remove the TXV manifold bolt.
5. Remove the thermostatic expansion valve.
- Discard the O-ring seals.

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

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