Housing Assembly HVAC: Service and Repair

Heater Core And Evaporator Core Housing













Removal and Installation

NOTICE: Motorcraft(R) Electric A/C Compressor Oil only must be used as a refrigerant system lubricant for hybrid vehicles. Addition of any oil other than Motorcraft(R) Electric A/C Compressor Oil to the hybrid vehicle refrigerant system will damage the electric Air Conditioning (A/C) compressor and contaminate the refrigerant system.

NOTICE: Use only the Air Conditioning (A/C) refrigerant compressor oil specified for this vehicle configuration. Use of any A/C refrigerant compressor oil other than what is specified will contaminate and damage the A/C system.

3.5L vehicles

1. Remove the lower cowl panel grille.

All vehicles

2. Recover the refrigerant. Service and Repair

3. Drain the engine coolant. For additional information, refer to Cooling System &/or Engine Block Heater. Service and Repair

4. Remove the instrument panel. For additional information, refer to Instrument Cluster / Carrier &/or Interior Moulding / Trim. Service and Repair

5. Disconnect the A/C pressure transducer electrical connector and detach the wire harness from the Thermostatic Expansion Valve (TXV) stud.





6. Remove the TXV fitting nut and disconnect the fitting.
- Discard the gasket seals.

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

7. Release the 2 heater hoses clamps and disconnect the hoses from the heater core.

8. Remove the 6 heater core and evaporator core housing nuts.
- To install, tighten to 9 Nm (80 lb-in).

9. Remove the heater core and evaporator core housing.

10. NOTICE: Motorcraft(R) Electric A/C Compressor Oil only must be used as a refrigerant system lubricant for hybrid vehicles. Addition of any oil other than Motorcraft(R) Electric A/C Compressor Oil to the hybrid vehicle refrigerant system will damage the electric Air Conditioning (A/C) compressor and contaminate the refrigerant system.

To install, reverse the removal procedure.
- Install new gasket seals.

- Add the correct amount of clean PAG oil (non-hybrid) or electric A/C compressor oil (hybrid) to the refrigerant system. Refrigerant Oil

11. Fill the engine coolant level. For additional information, refer to Cooling System &/or Engine Block Heater. Service and Repair

12. Evacuate, leak test and charge the refrigerant system. Service and Repair