21 52 510 Removing and installing or replacing clutch slave cylinder

WARNING: This page is about a different car, the 2010 BMW 550i, 2009 BMW 550i, and 2008 BMW 550i. However, it is still accessible from the selected car via links, so may be relevant.

Special tools required:

13 3 010 . See FUEL SYSTEM - SPECIAL TOOLS .

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. (Does not apply to 550i).
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 CLUTCH - TIGHTENING TORQUE .

Fig 2: Identifying Union Screw And Nut On Hydraulic Line

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NOTE: Illustration similar.
Version with throttle valve, tightening torque 21 52 12AZ. See CLUTCH - TIGHTENING TORQUE .

Release nut and remove clutch slave cylinder.

Installation:

Tightening torque 21 52 5AZ. See CLUTCH - TIGHTENING TORQUE .

Fig 3: Locating Clutch Slave Cylinder Nut

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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.

Installation:

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

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

Fig 4: Identifying Thrust Member (1) And Contact Face (3) On Release Lever

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

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

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