Removal and installation the clutch slave cylinder (BMW 3 Series E46)

Since the hydraulic clutch system operates on brake fluid, read the relevant instructions in Chapter Bleeding the brake system.

Brake fluid is poisonous. Never suck out brake fluid by mouth or through a hose. Store the fluid in a container that cannot be accessed accidentally.

Removal

If the clutch slave cylinder is not being replaced, the hose should not be disconnected. It should also be noted that when the slave cylinder is removed, the clutch pedal must not be pressed, otherwise the piston rod will be pressed out. If the piston is accidentally pressed out, the cylinder must be removed and assembled at a service station. After installing the clutch drive in place, it is necessary to bleed the air from it.

The piston in the clutch slave cylinder may only be lubricated with ATE brake cylinder paste.

1. Only if the hose was disconnected: Clamp the brake hose at the reservoir with pliers, for example HAZET-4590-2.

The operation of lifting and installing the vehicle on stands is associated with danger! Therefore, before carrying out the operation, read the Section Jacking and towing

2. Raise and support the vehicle. Remove the lower engine compartment cover, refer to Section Removal and installation the lower engine compartment cover.



3. If necessary, unscrew the hose fastening nut "1". Wipe off the leaked liquid with a rag.



4. Unscrew the nuts securing the working cylinder "2" and "3" to the manual transmission. Nut "2" simultaneously secures the hose holder. Mark the position of the holder for its subsequent correct installation.

Installation

1. Clean the tip of the rod (arrow on the illustration) and the adjacent surface to the clutch release lever and lightly lubricate with grease "ESSO UNREX S2".

2. Install the slave cylinder on the manual transmission and secure it with a torque of 22 Nm. At the same time, secure the hose holder with nut "2"

3. Tighten the hose to the cylinder with a torque of 17 Nm.

4. Remove the clamp from the brake hose going to the slave cylinder.

5. If the hose has been disconnected, bleed the clutch drive, refer to the appropriate section.

6. Install the lower engine compartment cover, refer to Section Removal and installation the lower engine compartment cover.