F 350 4WD Pickup V8-351 5.8L VIN H EFI (1997)
3. Remove the push nut sleeve from the attaching hole.
4. Disengage the heater outlet floor duct from the heater air plenum chamber.
INSTALLATION
1. Position heater outlet floor duct on the heater air plenum chamber and engage the lugs inside the heater outlet floor duct with their mating slots in
the heater air plenum chamber. Tilt the heater outlet floor duct into place. Then, push it in to secure engagement.
2. Start the plastic screw into the pushnut sleeve. Then, install them both through the heater outlet floor duct flange and into the attaching hole in the
heater air plenum chamber. Make sure the attachment is secure.
3. Install vacuum hose harness into stowage slot in heater outlet floor duct.
4. Test system for proper operation.
