HVAC Housing Assembly

Unit Housing Reconditioning

Heater-A/C unit housing must be removed from vehicle before performing this operation.

The heater a/c unit housing need not be disassembled to remove the heater core. Refer to: Heating and Air Conditioning, Heater Core, Service and Repair, Service and Repair


ASSEMBLE

1. Install vent door actuating arm to lower housing.

2. Install defrost door link to defrost door.






3. Install door and link into A/C housing.






4. Install defrost door actuating arm and retaining screw at housing.

5. Install defrost door link to actuating arm.






6. Line up the slots to the pegs on the mode door cam. Install the mode door cam.

7. Turn housing over and snap in the vent door to the vent door arm.






8. Install blend-air door in the housing.

9. Install evaporator into the lower housing.

10. Install upper housing onto lower housing.






11. Install screws to retain the upper housing to the lower housing.

12. Install evaporator and vent door seals onto the A/C housing.






13. Install evaporator probe assembly into the housing. Insert probe needle into evaporator.

14. Position the evaporator probe assembly at the housing face. Twist assembly clockwise to lock tab into slot on housing face.

15. Install wiring at evaporator temperature probe.

16. Install blower motor resistor.






17. Install blower motor into housing. Install blower motor mounting screws.






18. Thread the blower motor wiring through the blower motor cover. Install the blower motor cover.






19. Seat blower motor wiring grommet at blower motor cover.

20. Install blower motor wiring to the blower motor resistor.






21. Position recirculation housing to A/C housing. Install retaining screws and clip.






22. Install blend-air door actuator.






23. Install mode door actuator.






24. Install lower distribution housing.











25. Install recirculation door actuator and wiring.











26. Install heater core into A/C housing. Retain core with screws.