Heater Core: Service and Repair
REMOVAL1. Remove the instrument panel.
2. Drain the coolant from the radiator so that the coolant level is below the heater core.
3. Loosen the screw and disconnect the electrical connector from the Powertrain Control Module (PCM).
4. Disconnect the heater water hoses from the heater core.
5. Remove the screws and the metal cover.
6. Remove the A/C electronic blend door actuator.
- Disconnect the wire harness connector.
- Remove the screws and remove the A/C electronic blend door actuator.
7. Remove the A/C air intake flue damper assist spring.
8. Depress the locking ramp and remove the A/C damper door shaft from the air temperature control door shaft.
CAUTION: Do not attempt to bend any part of the A/C damper door shaft. It is brittle and will break.
9. Remove the A/C evaporator case outlet door shaft.
CAUTION: Do not attempt to bend any part of the lever. It is brittle and will break.
10. Remove the screws and the heater core cover.
11. Remove the heater core cover seal.
12. Remove the heater core.
INSTALLATION
1. Follow the removal procedure in reverse order.
- Lubricate the heater water hoses with Rubber Suspension Insulator Lube E25Y-19553-A or equivalent meeting Ford specification ESF-M99B112-A.