Evaporator Case: Service and Repair

1. Remove instrument panel. Service and Repair
2. Discharge refrigerant from A/C system at service access gauge port valve located on the suction line.
3. Disconnect liquid line and accumulator dryer inlet tube from the evaporator core at dash panel.
4. Cap refrigerant lines and evaporator core tubes to prevent dirt and moisture from entering the system.
5. Remove high and low pressure hoses and cap openings to prevent dirt and moisture from entering the system.
6. Disconnect heater hoses from heater core tubes and plug the hoses. Cap heater core tubes to prevent coolant loss from heater core during removal of evaporator case.

Fig. 19 Evaporator core & heater housing assembly:

7. Remove the screw attaching air inlet duct and blower housing assembly support brace to cowl top panel, Fig. 19.
8. Disconnect vacuum supply hose from the in-line vacuum check valve in engine compartment.
9. Disconnect blower motor wires from wire harness, then wire harness from blower motor resistor.
10. Working under the hood, remove two nuts retaining evaporator case to dash panel.
11. Remove two screws attaching evaporator case support brackets to cowl top panel.
12. Remove one screw or nut retaining the bracket below evaporator case to dash panel.
13. Pull evaporator case carefully away from dash panel and remove evaporator case assembly from vehicle.
14. Reverse procedure to install.