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

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Special tools required: 

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

Fig 1: Identifying Clutch Slave Cylinder With Special Tool (13 3 010)
G04725969Courtesy of BMW OF NORTH AMERICA, INC.

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

Installation note: 

Replace self-locking nuts.

Tightening torque 21 52 1AZ .

Fig 2: Locating Clutch Slave Cylinder Nuts And Screws
G09847959Courtesy of BMW OF NORTH AMERICA, INC.

Unlock spring clamp (1).

Disconnect hydraulic line (2).

Fig 3: Identifying Hydraulic Line And Spring Clamp
G04725971Courtesy of BMW OF NORTH AMERICA, INC.

Press cylinder together by hand.

Connect hydraulic line with cylinder pressed.

Fig 4: Pressing Cylinder With Hydraulic Line
G04725972Courtesy of BMW OF NORTH AMERICA, INC.

Remove special tool 13 3 010 .

Hold cylinder piston vertically downwards.

Press piston 5 times into cylinder.

Fig 5: Holding Cylinder Piston
G04725973Courtesy of BMW OF NORTH AMERICA, INC.

Press in piston until it engages.

Install clutch slave cylinder.

Bleed CLUTCH HYDRAULIC SYSTEM .

Installation note: 

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

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

Grease, refer to OPERATING FLUIDS .

Fig 6: Installing Grease Thrust Member On Contact Surface
G04725974Courtesy of BMW OF NORTH AMERICA, INC.