Removal and Replacement

64 51 591 Removing And Installing/Renewing Evaporator

Special tools required:







NOTE:
Non-coated evaporators were installed in connection with ozone generator on vehicles built before 09/2010.
A coated evaporators without an ozone generator is installed on vehicles built after 09/2010.
The evaporators must not be confused.
Refer to EPC for part number.







Necessary preliminary work:
- Remove heating and air-conditioning unit
- Remove heat exchanger







Release screws (1) on filter housing (2).
Remove microfilter cover (3) in direction of arrow.

Installation note:
Microfilter cover (3) must be correctly engaged in guides on filter housing (2).







Remove microfilter (1) at tabs in direction of arrow from filter housing (2).







Release screws (1) and remove distributor housing lower section (2).







Release screw (1) on airbag control unit (2).
Remove airbag control unit (2).
Release all screws on filter housing upper section (2) and remove towards top.

Installation note:
In case of equipment specification with rear air conditioner, ensure correct cable routing of shut-off valve (4).







Remove evaporator (1) in direction of arrow from distributor housing (2) and set down securely.







Replacement:
Release screws (1) and remove flange (2) with expansion valve (3).
Tightening torque 64 53 2AZ.

Installation note:
Ensure that seals are correctly seated.
Replace sealing rings.
Use special tool 00 9 030 to mount sealing rings without damaging them.