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Home >> Mercury >> 2009 >> Milan AWD V6-3.0L >> Repair and Diagnosis >> Heating and Air Conditioning >> Housing Assembly HVAC >> Service and Repair
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Housing Assembly HVAC: Service and Repair





Heater Core And Evaporator Core Housing













Removal and Installation

3.0L or 3.5L vehicles

1. Remove the lower cowl panel grille.

All vehicles

2. Recover the refrigerant. Service and Repair

3. Drain the engine coolant. Service and Repair

4. Remove the instrument panel. 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 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. To install, reverse the removal procedure.
- Install new gasket seals.

- Lubricate the refrigerant system with the correct amount of clean PAG oil.

11. Fill the engine coolant level. Service and Repair

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