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

WARNING: This page is about a different variant/trim than selected.

Special tools required:

NOTE: After completing work bleed Clutch Hydraulic System clutch hydraulic system.

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

Fig 1: Sealing Hydraulic Line With Special Tool (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.

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

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

Courtesy of BMW OF NORTH AMERICA, INC.

Unlock spring retainer (1).

Disconnect hydraulic line (2).

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

Courtesy of BMW OF NORTH AMERICA, INC.

Press cylinder together by hand.

Connect hydraulic line with cylinder pressed.

Fig 4: Identifying Pressed 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 5 Times

Courtesy of BMW OF NORTH AMERICA, INC.

Press in piston until it engages.

Install clutch 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 Cylinder Piston Thrust Member And Contact Face Of Release Lever

Courtesy of BMW OF NORTH AMERICA, INC.