F 250 4WD Super Duty V8-5.4L (2009)
5. Detach the electric auxiliary heater battery cables from the evaporator core cover.
6. Detach the electric auxiliary heater battery cable pin-type retainer from the air inlet duct.
All vehicles
7. Remove the 2 heater tube bracket screws.
8. Remove the 3 air inlet duct screws and position the air inlet duct aside.
9. Remove the 6 evaporator core cover screws and the evaporator core cover.
Vehicles with electric auxiliary heater
10. Remove the 2 heater core cover screws and the heater core cover.
All vehicles
11. Remove the heater core bracket.
12. Remove the heater core.
13. To install, reverse the removal procedure.