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Home >> BMW >> 2015 >> Z4 sDrive28i, Automatic Trans >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 20 (Clutch - Repair (N54) -- Z4_E89) >> Clutch Master Cylinder And Slave Cylinder >> 21 52 510 Removing and installing/replacing clutch slave cylinder (plastic)

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 repair work, BLEED CLUTCH HYDRAULIC SYSTEM .

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)
G04725969Courtesy 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
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
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: Esso UNIREX S2, part number 83 23 9 416 138 (40 g tube).

Fig 6: Installing Clutch Slave Cylinder
G04725974Courtesy of BMW OF NORTH AMERICA, INC.