- partially pull the piston out of the cylindrical hole and press the protective ring with a small screwdriver, press out the firmly seated piston by inserting a compressed air pipe, while inserting a piece of hard wood into the caliper hole so that the piston does not hit the metal parts;
Fig. 256. Brake mechanism support diagram: 1 — mounting bolts; 2 — caliper holder; 3 - safety clamp; 4 - brake shoe; 5 - protective ring; 6 - cylinder sealing ring; 7 — piston; 8 — cylinder body
- using a flexible pointed object, press out the sealing ring from inside the cylinder hole (when using sharp objects, do not damage the hole), now disassemble the caliper into the parts shown in Fig. 256;
- thoroughly wash the piston and cylinder bores with brake fluid or alcohol; other cleaning agents should not be used for this procedure, as they may destroy the rubber parts of the brake system;
- check all parts for damage, especially the outer sides of the piston and the working surfaces of the cylinder, in no case allow scratches or corroded areas;
- insert a new sealing ring into the cylinder edges and the piston moistened with brake fluid, first carefully insert the closed side into the cylinder bore;
- install the protective ring on the piston and caliper, now the assembled caliper is ready for installation.