21 52 510 Removing and installing/replacing clutch slave cylinder (plastic)

Special tools required: 

• 13 3 010

Seal hydraulic line to clutch slave cylinder with special tool 13 3 010.

Fig 1: Sealing Hydraulic Line With Special Tool (13 3 010)

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Release nuts and remove clutch slave cylinder (1) with holder (2).

Installation: 

Replace self-locking nuts.

For tightening torque refer to 21 52 5AZ in 21 52 CLUTCH OPERATION (HYDRAULIC) .

Fig 2: Identifying Clutch Slave Cylinder, Mounting Nuts And Holder

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Unlock spring retainer (1).

Disconnect hydraulic line (2).

Fig 3: Identifying Clutch Slave Cylinder Spring Retainer And Hydraulic Line

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Press cylinder together by hand.

Connect hydraulic line with cylinder pressed.

Fig 4: Identifying Pressed Cylinder

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Remove special tool 13 3 010.

Hold cylinder piston vertically downwards.

Press piston 5 times into cylinder.

Fig 5: Pressing Piston Into Cylinder 5 Times

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Press in piston until it engages.

Install clutch slave cylinder.

Bleed Clutch Hydraulics .

Installation: 

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

Lightly grease thrust member (1) on contact face (2).

Grease, refer to BMW Service Operating Fluids .

Fig 6: Identifying Cylinder Piston Thrust Member And Contact Face Of Release Lever

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