Evaporator Temperature Sensor / Switch: Service and Repair

NOTE: This procedure applies to the removal and installation of the Electronic Thermostat, Evaporator Core and the Expansion Valve. Therefore, depending on which component you are servicing, some steps may not be applicable.





Electronic Thermostat, Evaporator Core and/or Expansion Valve

Removal
1. Disconnect the battery ground cable.
2. Discharge and recover refrigerant. Service and Repair
3. Remove evaporator assembly.
4. Pull the sensor from the evaporator assembly.
5. Remove attaching screw.
6. Remove upper case.
7. Remove lower case.




- Slit the case parting face with a knife since the lining is separated when removing the evaporator.




- Lift to remove the upper case.




8. Remove evaporator core.
9. Remove expansion valve.
- Tear off the insulator carefully.
- Use a back-up wrench when disconnecting all refrigerant pipes.

Installation
To install, follow the removal steps in the reverse order, noting the following points:
1. The sensor is installed on the core with the clip.
2. The sensor must not interfere with the evaporator core.




3. When installing the new evaporator core, install the thermo sensor (2) to the evaporator core (1) specified position with the clip in the image.
4. O-rings cannot be reused. Always replace with new ones.
5. Be sure to apply new compressor oil to the O-rings when connecting lines.
6. Be sure to install the sensor and the insulator on the place where they were before.
7. To install a new evaporator core, add 50 cc (1.7 fl oz) of new compressor oil to the new core.
8. Tighten the refrigerant lines to the specified torque. Mechanical Specifications
9. Apply an adhesive to the parting face of the lining when assembling the evaporator assembly.