Section 12-02: Heating and Defrosting | 1996 F-150, F-250, F-350, F-Super Duty and Bronco, F-Super Duty Motorhome Chassis Workshop Manual |
The damper doors inside the heater air plenum chamber (18471) cannot be replaced. As a result, if there is a problem in the mix or the panel/defrost door, the heater air plenum chamber, including these doors, must be replaced. The heater air plenum chamber must also be replaced if there is damage to the mounting studs that cannot be repaired.