To replace a wheel cylinder, it is important to always replace both of them at the same time. Start by removing the brake drum and brake shoes. Then, unscrew the brake line fitting from the rear of the wheel cylinder using a flare-nut wrench to avoid rounding off the corners. Be careful not to pull the metal line out of the wheel cylinder. Next, remove the two bolts securing the wheel cylinder to the brake backing plate and remove the wheel cylinder. Plug the end of the brake line to prevent fluid loss and dirt entry. For installation, attach the brake line to the wheel cylinder before installing the mounting bolts and tighten the line fitting after tightening the mounting bolts. Use a flare-nut wrench if available. Finally, install the
Brake Shoe Set and brake drum, bleed the brakes, and thoroughly test the brake operation before driving the vehicle in traffic.