8.15. Back working brake cylinder

Details of the back working brake cylinder


1. Remove the brake drum.
2. Using a clip, press a brake hose in the place, the closest to the working brake cylinder.
3. Using flat-nose pliers, remove the top returnable spring squeezing brake shoes. Remove the top ends of brake shoes from pistons of the working brake cylinder.
4. Remove dirt around a junction of a brake hose and a back part of the working brake cylinder. Unscrew a connecting nut. Being careful, take a brake pipe from the working brake cylinder and close it a stopper.
5. Unscrew two bolts of fastening of the working brake cylinder to a brake board. Being careful, remove the working brake cylinder.


1. Purify dust and dirt from the working brake cylinder.
2. Remove dustproof covers from each end of the cylinder.
3. Take both pistons with sealing rings from the brake cylinder.
4. Check a condition of pistons and the brake cylinder for wear, corrosion and other defects.
5. Install sealing rings on the piston, grease them with pure brake fluid and install pistons in the brake cylinder.
6. Establish dustproof caps.


1. Wipe a brake board, install the brake pipeline on the brake cylinder and put the connecting clamp on two turns.
2. Screw in bolts of fastening of the working brake cylinder. Finally tighten a nut of fastening of the brake pipeline.
3. Remove a clip from a brake hose.
4. Install brake shoes on pistons of the brake cylinder and establish the top returnable spring.
5. Install the brake drum.
6. Remove air from the brake system.