22:10. Repair of a support

Models with a mobile support and one piston

Arrangement of details at installation of the piston in a support
1 – piston;

2 – sealing ring of the piston;

3 – dustproof cover of the piston

1. Being careful, clear a support of brake dust and dirt.
2. Take the piston from a support for what it is possible to use air under the low pressure given to the brake cylinder through an opening for connection of a brake hose. At the same time instead of brake shoes establish wooden whetstone.
3. Using the small screw-driver, take a sealing ring from a flute in a support opening.
4. Wash out all details in methyl alcohol or pure brake fluid and wipe them. For a clearing of tubes and openings use compressed air.
5. Check a condition of all details of a support and replace the worn-out or damaged details. Check a condition of the directing fingers.
6. Pay special attention to the cylinder and the piston. In the presence of scratches, рисок, wear or pointed corrosion it is necessary to replace the piston and the cylinder, and it means that it is necessary to replace a support assembled.
7. Irrespective of a state, replace all rubber consolidations.
8. At repair of a support check that all details were pure and dry.
9. Dip the piston and a new sealing ring of the piston into brake fluid and apply a thin film of brake fluid on an opening for the piston in a support.
10. Establish a sealing ring in a flute in a support opening.
11. Install a dustproof cover on the piston so that the internal diameter of a cover was included into a piston flute. Being careful, and at the same time turning, insert the piston into a support and at the same time insert an external edge of a dustproof cover into a support before its fixing (see the drawing).
12. At installation of new guides of fingers grease their surface with special lubricant and establish protective covers of the directing fingers in flutes of fingers. Implant the directing fingers in the holder of a support and at the same time enter protective covers into flutes of the holder of a support.