Disassembly brake mechanism of a forward wheel carry out in a following order:
Pic. 317. Details of the brake mechanism: 1 - rubber protective cap; 2 - guide pin, 25 Nm; 3 - rubber sleeve; 4 - dust cap; 5 - fitting for bleeding the brake drive; 6 - brake cylinder assembly with caliper; 7 - bracket (shoe guide); 8 - spring clamp; 9 - sealing ring of the cylinder; 10 - piston; 11 - dust ring
- clamp cylinder 6 (pic. 317) in a vice;
- using a screwdriver, remove the dust protection ring 11 from the piston;
Pic. 318. Pushing air piston out of the brake cylinder
- install a wooden pad under the piston (pic. 318), so as not to damage the piston on the surface of the caliper when it is pushed out;
- by gently blowing compressed air through the fluid inlet (pic. 318, shown by arrow), push the piston out of the cylinder;
Pic. 319. Removing the sealing ring of the brake cylinder
- carefully with a screwdriver (pic. 319) remove sealing ring 9 (pic. 317) from the brake cylinder. Be careful not to damage the cylinder bore;
- clean all parts thoroughly and if the cylinder and piston are in good condition, use a repair kit when reassembling. O-ring 9 recommended (pic. 317) cylinder and dust protection ring 11 to be replaced with new ones. Be sure to check that the repair kit matches the year of manufacture.
Assembly the brake mechanism of the front wheel, carry out in the reverse order of disassembly, while:
- install a new sealing ring 9, having previously lubricated it with brake fluid, and apply graphite grease or grease to the piston surface «ditor»;
- put the dustproof ring 11 with the outer working edge on the piston;
Pic. 320. Installing the dust ring
- slowly pressing the piston into the cylinder, using a screwdriver, carefully insert the inner working edge of the dust ring into the groove (pic. 320) cylinder (the cylinder must be clamped in a vice);
Pic. 321. Pressing the piston into the brake cylinder with a clamp
- using a clamp, slowly press the piston into the brake cylinder (pic. 321). In this case, the outer working edge of the dustproof ring will enter the piston groove as soon as it is opposite it;
- bleed the air from the brake cylinder. To do this, put a hose on the bleeder fitting, and put its end on a syringe filled with brake fluid. Fill the cylinder with brake fluid until it comes out through the brake hose connection;
- after assembling and installing the brake mechanism, restore the fluid level in the tank and bleed the hydraulic drive system.
Visitor comments