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 To Clutch Slave Cylinder Using Special Tools (13 3 010)

Courtesy of BMW OF NORTH AMERICA, INC.

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

Installation note: 

Replace self-locking nuts (and screws).

Tightening torque 21 52 5AZ .

Fig 2: Locating Clutch Slave Cylinder Nuts

Courtesy of BMW OF NORTH AMERICA, INC.

Unlock spring clamp (1).

Disconnect hydraulic line (2).

Fig 3: Identifying Hydraulic Line And Spring Clamp

Courtesy of BMW OF NORTH AMERICA, INC.

Press cylinder together by hand.

Connect hydraulic line with cylinder pressed.

Fig 4: Pressing Cylinder

Courtesy 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

Courtesy 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: Esso UNIREX S2, part number 83 23 9 416 138 (40 g tube).

Fig 6: Installing Clutch Slave Cylinder

Courtesy of BMW OF NORTH AMERICA, INC.