Housing Assembly HVAC: Service and Repair

HEATER CORE AND EVAPORATOR CORE HOUSING

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-19589-DA (Motorcraft YN-12-C) or equivalent meeting Ford specification WSH-M1C231-B only should be used as an A/C compressor lubricant.

1. With the vehicle in NEUTRAL, position it on a hoist. Vehicle Lifting
2. Recover the refrigerant. Refrigerant
3. Remove the instrument panel. Refer to: Body and Frame, Interior Moulding/Trim, Dashboard/Instrument Panel, Service and Repair, Service and Repair






4. Clamp off and disconnect the coolant hoses from the heater core.







5. Detach and position aside the power steering reservoir.







6. Disconnect the evaporator inlet and outlet fittings.
- Discard the O-ring seals.







7. Remove the heater core and evaporator core housing nut at the dash panel.







8. Remove the heater core and evaporator core housing nut at the dash panel.







9. Remove the heater core and evaporator core housing nut.







10. Remove the heater core and evaporator core housing nut.
11. Remove the heater core and evaporator core housing.
12. 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. Refrigerant Oil
13. Fill the engine cooling system. Service and Repair
14. Evacuate, leak test and charge the refrigerant system. Refrigerant