Removing and installing wheel brake cylinder

• Remove the brake drum.

• Pull the upper brake shoes apart far enough that the wheel cylinder is free and the automatic adjuster locks the shoes in this position.

• Loosen the union nut of the brake line, do not unscrew it.

  Clean the line connection beforehand.

• Unscrew the 2 mounting bolts for the rear wheel cylinder from the backing plate - upper arrows -.

• Place a rag under the backing plate.

• Unscrew the brake line nut and immediately screw it hand-tight into the new wheel cylinder. This ensures that only a small amount of brake fluid escapes.

• Screw in the bolts for the wheel cylinder and tighten them to 10 N·m.

• Tighten the brake line union nut to 15 N·m, that is, not too tight.

• Reset the brake shoes and install the brake drum.

• Bleed the brake system. As a rule, it is sufficient to bleed only the wheel cylinder whose line was opened. If the brake pressure feels spongy after bleeding, bleed the entire brake system.

• Press the foot brake firmly several times. This adjusts the rear wheel brake.

• Are the brake lines tightened?

• Is the brake line in the bracket?

• Are the bleeder screws tightened?

• Is there enough brake fluid in the reservoir?

• With the engine running, carry out a leak check.

  To do this, press the brake pedal with 200 to 300 N (equivalent to 20 to 30 kg) for about 10 seconds. The brake pedal must not sink. Check all connections for leaks.

• Then carry out several braking tests on a road with light traffic.

Note: Brake fluid must be disposed of as hazardous waste.