64 51 591 Removing and installing/replacing 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!

Necessary preliminary tasks:

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).

Fig 1: Removing Microfilter Cover

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

Fig 2: Removing Microfilter From Filter Housing

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

Fig 3: Identifying Distributor Housing Lower Section And Screws

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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 shutoff valve (4).

Fig 4: Identifying Airbag Control Unit, Filter Housing Upper Section, Shutoff Valve And Screw

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

Fig 5: Removing Evaporator From Distributor Housing

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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.

Fig 6: Identifying Expansion Valve, Flange And Screws

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