21 52 500 Removing and installing/replacing clutch master cylinder

WARNING: This page does not describe the selected car, but rather 24 other vehicles, including the 2018 BMW 320i xDrive, 2018 BMW 320i, 2017 BMW 320i xDrive, 2017 BMW 320i, and 2016 BMW 335i xDrive. However, it is still accessible from the selected car via links, so may be relevant.

NOTE: After completing repair work, bleed CLUTCH HYDRAULIC SYSTEM .

Necessary preliminary tasks:

Remove TRIM PANEL for pedal mechanism.

Turn locks (1) 90° counterclockwise.

Unlock latch mechanism (2).

Remove cover (3).

Fig 1: Identifying Clutch Master Cylinder Cover And Latch Mechanism

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Draw off brake fluid up to supply hose of clutch hydraulic system (1).

For this purpose, use only a vacuum pipe that is exclusively used for removing brake fluid.

Detach supply hose (1) from expansion tank.

NOTE: Graphic similar.

Fig 2: Identifying Expansion Tank Supply Hose

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Remove retainer (1).

Installation note:

Check retainer (1), replace if necessary.

Both shanks of retainer (1) must rest in groove of bolts (2) and engage audibly.

Slide out bolt (2).

Installation note:

Lightly grease bolt (2).

Remove over-center helper spring.

Fig 3: Identifying Retainer And Bolts

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Release screws (1) on clutch master cylinder (2).

Tightening torque: 21 52 2AZ .

Fig 4: Identifying Screws On Clutch Master Cylinder

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Disconnect return spring (1).

Detach retaining clip (3) and pull clutch pedal with clutch master cylinder off bearing support.

Press bolt ends (2) together and remove pin.

Installation note:

Replace retaining clip and bolt.

The retaining clip must be seated with both shanks in the pin groove.

Fig 5: Identifying Return Spring And Retaining Clip

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Detach clamp (1) with a screwdriver (2).

IMPORTANT: Protect the carpet with suitable agents from contamination with brake fluid.

Detach hydraulic line from clutch master cylinder (3).

Fig 6: Detaching Clamp With Screwdriver

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Detach supply hose (1) from clutch master cylinder.

IMPORTANT: Do not pull supply hose completely into interior.

Fig 7: Identifying Supply Hose And Clutch Master Cylinder

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Lever clutch switch (1) out of clutch master cylinder (2) with a screwdriver.

Release plug connection (3) and disconnect connector (4) from clutch switch (1).

Fig 8: Removing Clutch Switch Of Master Cylinder

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Installation note:

The clutch switch is protected from incorrect installation.

The clutch switch must snap audibly into place.

Fig 9: Identifying Clutch Switch

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