Expansion Valve: Service and Repair

EVAPORATOR CORE AND / OR EXPANSION VALVE

REMOVAL

Preparation:
Battery ground cable
Discharge and recover refrigerant

1. Evaporator assembly

2. Electronic thermostat
- Remove the sensor fixing clip.
- Pull the grommet and remove the sensor from the evaporator assembly.

3. Clip

4. Attaching screw

5. Upper case

6. 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.





7. Evaporator core

8. Expansion valve
- Tear off the insulator carefully.
- Remove the sensor fixing clip.
- 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 thermosensor to the evaporator core specified position with the clip.
4. 0-rings cannot be reused. Always replace with new ones.
5. Be sure to apply new compressor oil to the 0-rings when connecting lines.
6. Be sure to install the sensor and the insulator in their previous positions.
7. To install a new evaporator core, add 50 cc (1.7 fl.oz.) of new compressor oil to a new core.
8. Tighten the refrigerant lines to the specified torque.
9. Apply an adhesive to parting face of lining when assembling evaporator assembly.