Heater-A/C Housing Disassembly and Assembly

Fig 50 Evaporator Sensor Wiring:

NOTES:
- The Heater A/C housing must be removed from the vehicle to recondition.
- Remove the Heater Core assembly from the housing. Refer to: "Heater Core : Service and Repair" Service and Repair

DISASSEMBLY
1. Remove the wiring at the evaporator sensing probe.

Fig 51 Weather-strip Seals:

2. Remove heater outlet weather-strip seals at duct openings.

Fig 52 Cowl Air Intake:

3. Remove weather-strip seal at cowl air intake.

Fig 53 A/C Heater Housing Retaining Screws:

Fig 54 A/C Heater Housing Retaining Clips:

4. Remove screws and clips retaining upper housing to lower.

Fig 55 A/C Heater Housing Halves:

5. Separate housing halves.

Fig 56 Evaporator Sensing Probe:

Fig 57 Evaporator Sensor:

6. Remove evaporator sensing probe from the center of the evaporator and remove probe from housing.

Fig 58 Evaporator Removal:

7. Remove evaporator from housing.
8. Turn lower housing over.

Fig 59 Vacuum Actuator Cover:

9. Remove the vacuum actuator cover.

Fig 60 Door Identification:

10. Mark the vent actuator bracket and the vent door shaft for assembly identification. The vent door and the Heat/Defrost door look similar but are different.

Fig 61 Vent Door Actuator Lever:

Fig 62 Heat/Defrost Door Actuator Lever:

11. Remove the screws retaining the actuator levers to the doors.

Fig 63 Vent Door Actuator:

12. Remove the vent door actuator.

Fig 64 Heat/Defrost Door Actuator:

13. Remove the heat/defrost door actuator.

Fig 65 Vent Door:

14. Remove the vent door from the housing.

Fig 66 Heat/Defrost Door:

15. Remove the heat/defrost door from the housing.

Fig 67 Thermostatic Expansion Valve:

SUBASSEMBLY RECONDITION

NOTE: The thermostatic expansion valve (TXV) is located at the evaporator inlet.

Fig 68 Insulation Removal:

REMOVAL
1. Cut away and remove insulation around TXV capillary tube.

Fig 69 Capillary Tube:

2. Remove capillary tube from clip at the evaporator outlet.

Fig 70 Evaporator Inlet Line:

3. Remove evaporator inlet line from TXV.

Fig 71 TXV Outlet:

4. Remove flange nut at TXV outlet.

ASSEMBLY
To assemble the Heater A/C housing reverse the above procedures. The heater core tubes are offset and must be installed in the proper manner.

The Heat/Defrost door and the Vent door are not identical. These doors must be installed properly