NANO

502 BRAKE SYSTEM WHEEL CYLINDER Working of wheel cylinder is as follows: Wheel cylinders in the brake system are meant to push the brake shoes against the brake drum. Each wheel cylinder is provided with pistons, rubber seals, springs and dust covers. The brake line from themaster cylinder is attached to the inlet port and a bleeder screw (with a cover) is provided to bleed air from the system whenever required. Wheel cylinders are mounted on back plate. When the brakes are applied, the fluid under pressure from themaster cylinder enters the inlet port and forces the piston to move outward to push the shoe against the drum. Similarly when the brakes are released the brake shoe retractor springs force the brake fluid out of the wheel cylinder by pushing the piston inward. Inlet port Spring Piston Dust Covers Bleeder port Rubber seal