Evaporator Core: Service and Repair

64 51 591 Removing And Installing/renewing Evaporator

Special tools required:







Necessary preliminary tasks:
- Remove heating unit







Release screw (1).
Tightening torque 64 53 3AZ.
Remove adapter plate (2).
Release screws (4).
Tightening torque 64 11 1AZ.
Remove bulkhead adapter (3).







Release screw (1).

Replacement:
Release screws (2) on expansion valve (3).
Tightening torque 64 53 9AZ.
Remove expansion valve (3).

Installation:
Replace sealing rings.
Use special tool 00 9 310 to mount sealing rings without damaging them.







Release screws (1).
Unclip associated retaining lugs on lower housing section (2).
Remove lower housing section (2) and place to one side.







Pull evaporator (1) in direction of arrow out of upper housing section (2).

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