21 52 500 Removing and installing/replacing clutch master cylinder

Necessary preliminary tasks: 

• Remove trim panel for pedal assembly, see 21 00 006 Bleeding clutch hydraulic system .

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.

Fig 1: Supply Hose Of Clutch Hydraulic System

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Press pin (1) out of clutch pedal with a short screwdriver.

Fig 2: Pressing Pin Out Of Clutch Pedal

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Installation: 

The pin is coded by a straight surface (1).

The coding points upwards.

Screw pin with coding upwards. Turn slightly until coding snaps into place. Press in pin until engaged (2).

Fig 3: Straight Surface Of Pin

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Unfasten screws.

Tightening torque: 2AZ, see 21 52 CLUTCH OPERATION (HYDRAULIC) .

Fig 4: Screws

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

Detach hydraulic line from clutch master cylinder.

Fig 5: Retainer

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Detach supply hose (1) from clutch master cylinder and remove clutch master cylinder.

Fig 6: Supply Hose

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Lever out shift element (1) from clutch master cylinder (2) with screwdriver.

Release plug connection (3) and disconnect plug (4) from shift element (1).

Fig 7: Plug Connection

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Installation: 

Shift element is secured against incorrect installation.

Shift element must snap audibly into place.

Fig 8: Shift Element

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