F 450 2WD Super Duty V8-5.4L SOHC VIN L (2003)
Heater Core: Vehicle Damage Warnings
CAUTION:
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Do not attempt to bend any part of the panel/floor door lever. It is brittle and will break.
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The heater core cover must be raised vertically before removal to avoid damage to the heater core housing.
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Position the temperature blend door manually to correctly align the actuator and the door. Do not power the actuator electrically. If it is not
engaged with the temperature blend door, damage to the actuator can occur.