Drum-brake systems on the front and rear wheels of vehicles were exceeding daily prior to the early 1970s, on the contrary as CD brakes became exceeding accepted, drum brakes were relegated to the rear wheels on most vehicles. As of 2010, drum brakes are much used on the rear wheels of some vehicles. Drum brakes office when brake shoes are pressed outward by a hydraulically operated spin cylinder. The spin cylinder's piston or seals can wear gone, necessitating the installation of a replacement cylinder.
Instructions
1. Apartment a floor jack under the frame condemn near the spin where you intend to alter the turn cylinder. Stand the vehicle until the spin is off the ground, then slide a jack stand under the lower suspension authority arm. Lower the floor jack. Remove the turn lugs with a lug wrench, lift the circle from the hub and locate it aside.
2. Establish the retaining clips on the outer surface of the brake drum near the revolve studs, which is visible after you hold removed the shove. Remove the clips by prying them off with a flat-blade screwdriver. Pull the brake drum off of the shove hub and allot it aside.
3. Remove the upper brake shoe spring with a team of pliers and establish it aside. Allot the antique turn cylinder at the top of the backing plate. Remove the brake contour from the back side of the cylinder with a tubing wrench. Pump the handle on the brake bleeder until clear brake fluid without air bubbles enters the brake bleeder reservoir. Remove the brake bleeder hose from the screw. Tighten the bleed screw with a wrench.6.
4. Spread apart the upper butt end of the brake shoes and position the replacement revolve cylinder at the top of the backing plate. Border up the mounting holes, alter the retaining bolts and tighten them. Attach the brake limit to the back side of the virgin cylinder and tighten it with a tubing wrench. Alter the upper brake shoe spring with a twosome of pliers.
5. Loosen the bleeder screw on the back side of the recent wheel cylinder with a inconsiderable wrench. Push the tube of a one-man brake bleeder over the screw. Remove the trundle cylinder retaining bolts with a socket and ratchet. Spread the upper mark of the brake shoes out from the wheel cylinder by share. Pull the getting on spin cylinder from the backing plate and discard it.
Open the hood and remove the cap from the master cylinder reservoir. Add brake fluid to the reservoir until the level reaches the full mark. Replace the cap and close the hood.
7. Push the brake drum back onto the wheel hub. Push the clips over the wheel studs until they are fully seated. Replace the wheel and tighten the wheel lugs. Raise the vehicle with the floor jack and remove the jack stand. Lower the floor jack and remove it from under the vehicle.
