Get the wheel cylinder rebuild kits before the start of the procedure. First, the
Brake Shoes need to be taken out, second the brake line fitting need to be disconnected from the back end of the wheel cylinder and then the brake line needs to be capped to avoid contamination. Inserting curved needle-nose pliers remove the wheel cylinder retaining clip at the rear of the wheel cylinder. Otherwise, jam two awls into the access slots between the cylinder pilot and the retainer locking tabs and the latter will be bent away both at the same time. After this, detach the clip and then, remove the cylinder and put it on the cleaned working table. Special Tools for this procedure may include: Bleeder valve removal tool, Clamp to lock the bleeder valve during removal Rear access tool Piston removal tool Boots, pistons and seals removal tool Compressor to apply pressure Seal Installation tool Seal puller tool Spring compressor tool Front bearing retainer hold Remove the bleeder valve, the seals, pistons, boots, and the Spring assembly from the cylinder body. Clean the wheel cylinder using brake fluid, denatureal alcohol or brake system cleaner but do not use oils, greases, lacquers or petroleum-based solvents. Finally, use a pressurised air to expel as much liquid as possible and clear the passages. Check the condition of the cylinder bore as to corrosion and scores; Light scoring or rusting can be polished out with crocus paper but if the defects are deep or the bore is scored, replace the cylinder. Clean brake fluid should be applied to the new seals and the brake cylinder should then be assembled with the boots correctly positioned. Place the wheel cylinder on the backing plate as before and fasten it with the help of the new retaining clip. Begin the brake line fitting into the threads of the wheel cylinder and then with pressing the retaining clip to the wheel cylinder use the screwed handle between the wheel cylinder and the axle flange. Make sure that the clip and the cylinder are well seated, now remove the screwdriver and tighten the brake line fitting. Last of all, bleed the brake system.