Removal and Replacement

64 51 590 Removing and installing/renewing evaporator







Necessary preliminary work:
- Remove heater
- Remove heating element







Release screws (1).
Remove cover (2) with twin pipes (3) and gasket (4).

Installation note:
Ensure gasket (4) is correctly seated.







Disconnect plug connection from temperature sensor (1).
Release screws (2) and remove cover (3).







Remove evaporator (1).

Replacement:
Remove expansion valve (2).







Installation note:
Observe assembly sequence without fail.

Insert coolant pipes (1) with new sealing rings in heat exchanger (2).
Attach lower shell of retaining clip (3) from rear (air conditioning system side).
Clip in upper shell (4) from front and secure with screw (5).







When correctly installed, the coolant pipes are visible in the two apertures (1) of the upper shell (2).