1. Disconnect the cable from the negative battery terminal.
2. Carefully drain the refrigerant.
3. Disconnect the line and hose from the evaporator joints on the firewall in the engine compartment. Hold the joints with a second wrench. Immediately cover the joints to prevent dirt from entering.
4. Remove the glove box and frame.
5. On the evaporator, loosen and remove the two sealing strips.
6. Disconnect the thermostat wire.
7. Remove the drain hose. Unscrew the lock nuts and remove the evaporator.
8. Remove the evaporator sensor from the fins.
9. Loosen the screws and remove the clips holding the casing.
10. Carefully separate the casing halves and remove the covers.
11. Remove the expansion valve if necessary.
To install:
12. Assemble the housing components as needed. Install the capillary tube in its original location. Assemble the upper and lower halves of the housing, making sure there are no gaps in the housing.
13. Install the evaporator assembly and tighten the lock nuts. Don't forget to attach the evaporator drain hose and route it outside the vehicle.
14. Connect the thermostat wire.
15. Install sealing strips.
16. Install the glove box and frame.
17. Connect the receiver line and the suction pipe. Use new O-rings before assembly. Tighten the receiver-drier line to 17 Nm and the suction line to 32 Nm.
18. Fill the coolant and bleed the system. Start the system and check for leaks.