21 52 510 Removing And Installing/Replacing Clutch Slave Cylinder (Plastic)

Special tools required: 

• 13 3 010  . See Fig 1.

Seal hydraulic line to clutch slave cylinder with special tool 13 3 010  . See Fig 1.

Fig 1: Identifying Special Tools (13 3 010)

Courtesy of BMW OF NORTH AMERICA, INC.

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

Installation: 

Replace self-locking nuts.

Tightening torque. See 21 52 5AZ in CLUTCH - TIGHTENING TORQUES .

Fig 2: Identifying Clutch Slave Cylinder And Nut

Courtesy of BMW OF NORTH AMERICA, INC.

Unlock spring retainer (1).

Disconnect hydraulic line (2).

Fig 3: Identifying Hydraulic Line And Spring Retainer

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: Pressing Piston Into Cylinder

Courtesy of BMW OF NORTH AMERICA, INC.

Installation: 

Check pressure hose for traces of abrasion.

If no traces of abrasion by the propeller shaft can be detected on the pressure hose:

The pressure hose must be bent approx. 30 mm away from the propeller shaft.

If traces of abrasion by the propeller shaft can be detected on the pressure hose:

The pressure hose must be replaced.

After replacement, the clutch hydraulics must be bled.

Press in piston until it engages.

Install clutch slave cylinder.

Bleed clutch hydraulics  . See 21 00 006 BLEEDING CLUTCH HYDRAULICS (PLASTIC SLAVE CYLINDER) .

Installation: 

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

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

Fig 6: Identifying Thrust Member

Courtesy of BMW OF NORTH AMERICA, INC.