F 350 2WD Super Duty V8-7.3L DSL Turbo VIN F (1999)
7. Remove the screws and remove the evaporator core housing support bracket.
8. Disconnect the heater hoses from the heater core. See: Heater Hose/Service and Repair
9. Remove the 11 screws, release the 3 retaining tabs and remove the evaporator core cover.
10. Remove the evaporator core.
INSTALLATION