Disassembly
1. Remove the protective cover (Fig. 15.51).
Fig. 15.51. Working brake cylinder: 1 - dust cover: 2 - piston assembly; 3 - piston; 4 - piston cuff; 5 - spring; 6 - bleed nipple, 7 Nm; 7 - body of the working brake cylinder
2. Remove the pistons as an assembly.
3. Remove the seals from the pistons.
4. Remove the spring.
5. Unscrew the bleed nipple.
Examination
Check the walls of the working brake cylinder and piston for damage or rust. If any abnormalities are found, replace the working brake cylinder assembly.
Original version of the article on the website: mitsubishiman
Installation
1. Installation is carried out in the reverse order of removal, taking into account the following.
2. Before assembly, wash the piston and cylinder with alcohol or the brake fluid used.
3. Lubricate the piston seals and special mandrel with brake fluid.
Brake fluid: DOT3 or DOT4
4. Place the piston cuff on a special mandrel so that the sharp edge is directed upwards, then, lowering it down the mandrel, install it in the piston groove. In order to avoid twisting or skewing the piston cuff during installation, lower it slowly and carefully, in one motion without stopping (Fig. 15.52). The sharp edge of the piston cuff should be located on top.
Fig. 15.52. Using a mandrel to install a cuff on the piston of the working brake cylinder