64 51 590 Removing and installing/replacing evaporator

WARNING: This page is about a different car, the 2010 BMW X3, 2009 BMW X3, 2008 BMW X3, and 2007 BMW X3. However, it is still accessible from the selected car via links, so may be relevant.

Necessary preliminary tasks:

Remove 64 11 208 Replacing heater core .
Remove 64 11 227 Replacing output stage/switch for heater - A/C system blower

Fig 1: Temperature Sensor, Connection, Linkage

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Withdraw temperature sensor (1).

NOTE: Disconnect plug connection (2).

Unclip linkage (3) at actuator drive.

Fig 2: Actuator Drive, Screw, Unlock Plate and Tabs

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Unlock and remove actuator drive (1) and disconnect plug connection.

Release screw (2).

Unlock plate (3) (see detail) and remove.

NOTE: Installation: First insert tabs (4).

Unclip wiring harness.

Fig 3: Cam Disc, Microswitch

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Twist cam disc (1) until microswitch (2) is unclipped and can be pulled off.

Release screws on blower housing.

Fig 4: Blower Housing, Double Pipe

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Lift off blower housing (1) and feed out double pipe (2).

NOTE: Installation: Ensure correct cable routing.

Fig 5: Clamps, Lower Housing Section

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Unclip clamps (1) and remove lower housing section (2).

Fig 6: Evaporator, Expansion valve

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Remove evaporator (1).

Only replace: Remove expansion valve (2).

IMPORTANT: Do not bend radiator fins.

If necessary, clean or straighten radiator fins with slat comb.