BMW 34311113656 Brake Master Cylinder

You can Select Your Vehicle to check if 34311113656 fits your vehicle.

Obtain a repair kit specifically for the brake master cylinder fitted to your car. With the brake master cylinder removed, brush and clean away all external dirt. If equipped with remote type servo units, withdraw the flexible bellows and push rod before extracting the circlip from its groove in the end of the cylinder body. Extract the internal components and keep them in strict sequence for refitting, noting that the design will vary according to the type of brake master cylinder. Wash all parts in hydraulic fluid or methylated spirit and examine the piston and cylinder bore surfaces for scratches, scoring, or bright wear areas; if any are observed, renew the brake master cylinder completely. If the components are in good order, discard the old seals and fit new ones from the repair kit, using fingers only to manipulate them into position. Dip the internal components in clean hydraulic fluid before installing them.

Disconnect the supply hoses from the cylinder, except on North American versions with integral reservoirs.

The primary piston and components can be extracted after releasing the special screw. If any difficulty arises, apply air from a pump to one of the fluid outlet holes while sealing the others with plugs.

The first step is to syphon the fluid from the reservoir and disconnect the supply hose to the master cylinder.