HVAC Housing Disassembly
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
DISASSEMBLE
1. Place heater-A/C unit assembly on workbench.
2. Pull back on retaining tabs and remove heater core from housing.
3. Remove recirculation door actuator wiring. Remove actuator from recirculation housing.
4. Remove lower distribution housing. Remove mode door actuator.
5. Remove blend air door actuator.
6. Remove recirculation housing screws and clip.
7. Remove blower motor wiring at resistor.
8. Squeeze blower motor wiring grommet and push grommet through blower motor cover.
9. Remove blower motor cover.
10. Remove screws at blower motor mounts. Remove motor.
11. Remove blower motor resistor.
12. Remove wiring at evaporator temperature probe.
13. Using a screwdriver, pry up on tab at evaporator probe. Twist probe counterclockwise and push tab into the housing.
14. Pull the evaporator probe needle out of the evaporator fins. Remove the evaporator probe through the opening at the blower motor housing.
15. Remove vent door seal from housing.
16. Remove evaporator seal from housing.
17. Remove upper housing screws and clips.
18. Separate upper housing from lower housing.
19. Remove evaporator assembly from lower housing.
20. Remove blend air door from lower housing.
21. Using a flat blade screwdriver, pinch in the retaining tab at the base of the vent door. Pull up on door and remove from housing.
22. Remove mode door actuating cam.
23. Remove screw at defrost door actuating arm. Remove defrost door link from arm.
24. Remove defrost door arm from lower housing.
25. Remove link and defrost door from housing.
26. Remove defrost door link from door.
27. Remove vent door actuating arm from lower housing.