When you remove a wheel brake cylinder, brake fluid usually always leaks from the brake system hydraulic drive. You can prevent leakage of fluid if, before work, you unscrew the bleed nipple of the corresponding brake cylinder a few turns and put a transparent hose on it to remove air. Lower the other free end of the hose into a clean container and press the brake pedal several times until it stops. As soon as the hose is filled with brake fluid, secure the brake pedal in the pressed position (with a wooden block or brick). This will close the return flow holes in the main brake cylinder and the brake fluid will not leak.
SEQUENCE OF WORKS
1. Remove the brake drums and brake shoes.
2. Unscrew the brake pipe on the rear brake guard. To prevent dirt from getting in and brake fluid from leaking out, close the hole with a suitable plug.
3. Unscrew the wheel brake cylinder mounting bolts and remove the cylinder.
4. Installation of a new brake cylinder is carried out in the reverse order of removal.
5. Remove air from the hydraulic brake system.