21 52 510 Removing and installing or replacing clutch slave cylinder

WARNING: This page is about a different car, the 2010 BMW M3, 2009 BMW M3, and 2008 BMW M3. However, it is still accessible from the selected car via links, so may be relevant.

Special tools required:

13 3 010

See .

NOTE: After completing work bleed clutch hydraulic system.

IMPORTANT: From 08.06 a plastic clutch slave cylinder is installed in the E81, E87 and E9X.
Important notes on installation are described in this work step.

Seal supply hose to clutch master cylinder with special tool 13 3 010 .

NOTE: Illustration shows E46.

Fig 1: Identifying Special Tool (13 3 010)

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Remove transmission underbody protection if necessary.

Release union screw (1) on hydraulic line.

Release nut (2) and remove hydraulic line (3) with bracket.

Installation:

Tightening torque 21 52 1AZ , see 21 52 CLUTCH OPERATION (HYDRAULIC) .

NOTE: Illustration similar.
Version with throttle valve, tightening torque 21 52 12AZ , see 21 52 CLUTCH OPERATION (HYDRAULIC) .

Release nut and remove clutch slave cylinder.

Fig 2: Hydraulic Line With Bracket

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Installation:

Tightening torque 21 52 5AZ , see 21 52 CLUTCH OPERATION (HYDRAULIC) .

IMPORTANT: N47 with H-transmission only
Clutch slave cylinder must not rest at the side on the transmission.
Failure to comply with this instruction may result in leaks at the clutch slave cylinder.

Fig 3: Locating Clutch Slave Cylinder

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Installation:

Clean thrust member (1) and contact face on release lever (2).

Lightly grease thrust member (1) on contact face (3).

Grease, refer to CLUTCH - OPERATING FLUIDS .

Fig 4: Grease Thrust Member On Contact Face

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IMPORTANT: Spacer between fuel line and pressure hose of clutch slave cylinder must be correctly fitted.

Fig 5: Connecting Spacer Between Fuel Line And Pressure Hose Of Clutch Slave Cylinder

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