2. Remove the filler cap of the master cylinder reservoir, fill the reservoir completely. Clamp the flexible pipe of the brake system line between the rear axle and the housing.
3. Loosen the brake line coupling at the rear of the wheel cylinder.
4. Unscrew the brake cylinder mounting bolts.
5. Unscrew the brake line coupling, remove the cylinder from the shield. Plug the end of the hydraulic pipe if necessary.
6. Clean the outside of the cylinder.
7. Remove the rubber boots from the ends of the cylinder, take out the two pistons and the spring between them.
8. Inspect the cylinder bore, pistons and seals. If the cylinder is in good condition, use only the repair kit; otherwise the cylinder must be replaced. Clean all metal parts using methylated spirits if necessary, never use petrol or similar solvents. Air dry the parts, or wipe them with a lint-free cloth.
9. Lubricate the seals with paste and install them so that the larger diameter end faces the end of the piston.
10. Lubricate the pistons and cylinder bore with paste. Install the piston at one end of the cylinder, then the spring and another piston at the other end.
11. Install the rubber casings on the pistons and in the cylinder grooves.
12. Installation is carried out in the reverse order, bleed the hydraulic system as described in Chapter 17.
Information obtained from this resource: Audimanual.ru