Expansion Valve: Service and Repair

1. Disconnect battery ground cable and discharge system refrigerant.
2. Disconnect refrigerant lines at evaporator, capping all openings.
3. Remove grommets from inlet and outlet fittings.
4. Remove glovebox and reinforcement.
5. Disconnect electrical connectors at A/C switch and blower resistor.
6. Remove cooling unit.
7. Remove idling stabilizer amplifier.
8. Remove A/C wiring harness from cooling unit.
9. Remove thermistor attaching screw and the thermistor.
10. Remove clamps and screws, then the lower case.
11. Remove upper case.
12. Remove heat insulator and clamp from outlet tube.
13. Disconnect liquid line tube from expansion valve inlet fitting.
14. Disconnect expansion valve from inlet fitting of evaporator.
15. Reverse procedure to install, then evacuate and recharge system and check for leaks. If evaporator is replaced, add .8 to 1 oz. of new refrigerant oil to compressor.