21 00 006 Bleeding clutch hydraulic system

WARNING: This page does not describe the selected car, but rather 21 other vehicles, including the 2013 BMW 328xi, 2013 BMW 328i, 2012 BMW 328xi, 2012 BMW 328i, and 2011 BMW 328xi. However, it is still accessible from the selected car via links, so may be relevant.

Special Tools Required:

21 5 030

Necessary preliminary tasks:

Remove transmission underbody protection if necessary.
Remove microfilter housing is necessary.

IMPORTANT: From 08.06 a plastic Clutch Slave Cylinder is installed in the E8X, E9X.

Important notes on installation are described in this work step.

Unfasten nuts and remove clutch slave cylinder (pressure line remains connected).

Fig 1: Clutch Slave Cylinder And Nuts

Courtesy of BMW OF NORTH AMERICA, INC.

Fit special tool 21 5 030 on clutch slave cylinder (1).

Press piston rod (2) with aid of spindle completely into clutch slave cylinder.

Fig 2: Special Tool (21 5 030), Piston Rod And Clutch Slave Cylinder

Courtesy of BMW OF NORTH AMERICA, INC.

Connect bleeder unit to brake fluid expansion tank.

IMPORTANT: Check relevant Operating Instructions for each device.

Charging pressure should not exceed 2 bar.

Connect bleeder hose to bleed valve (1).

Hold clutch slave cylinder in illustrated position (refer to Fig 3) with special tool 21 5 030.

Open bleeder valve (1).

If bubble-free brake fluid emerges, retract piston rod (2) of clutch slave cylinder with aid of spindle a little and press in again.

If no air bubbles escape, close bleeder valve (1), otherwise repeat procedure.

IMPORTANT: Do not under any circumstances remove special tool 21 5 030 from clutch slave cylinder when brake system is pressurized.
Piston with push rod can jump out of clutch slave cylinder.

Switch off bleeder unit or remove from brake fluid expansion tank.

Fig 3: Special Tool (21 5 030), Bleeder Valve, Clutch Slave Cylinder Piston Rod And Removal Directions

Courtesy of BMW OF NORTH AMERICA, INC.

Slowly retract piston rod (2) of clutch slave cylinder (1) with special tool 21 5 030.

Remove special tool 21 5 030 from clutch slave cylinder (1).

Fig 4: Special Tool (21 5 030), Piston Rod And Clutch Slave Cylinder

Courtesy of BMW OF NORTH AMERICA, INC.

Fit clutch slave cylinder to transmission.

Installation:

Replace self-locking nuts.

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

Fig 5: Clutch Slave Cylinder And Nuts

Courtesy of BMW OF NORTH AMERICA, INC.

Correct brake fluid level in expansion tank.