Heater Core: Service and Repair

REMOVAL

NOTE: If a heater core leak is suspected, the heater core must be leak-tested before it is removed from the vehicle. Testing and Inspection

1. Disconnect the battery.
2. Drain the cooling system.
3. Remove the instrument panel. Refer to: Body and Frame, Interior Trim, Dashboard/Instrument Panel, Service and Repair, Removal and Installation, Removal and Installation







4. Compress the holding tabs and disconnect the heater water hoses at the heater core.







5. Remove the A/C plenum demister adapter.
1 Remove the screw.
2 Remove the A/C plenum demister adapter.







6. Disconnect the vacuum line.







7. Remove the heater core bracket.
1 Remove the screws.
2 Remove the bracket.







8. Remove the plenum chamber top.
1 Remove the 13 screws.
2 Remove the plenum chamber top.
9. Remove the blend door assembly from the case.







10. Remove the heater core.

INSTALLATION
1. To install, reverse the removal procedure.
^ Lubricate the coolant hoses with MERPOL(R) meeting Ford specification ESE-M99B144-B or plain water only, if needed.