Chevrolet 21990465 Shoe Kit,Rear Brake

You can Select Your Vehicle to check if 21990465 fits your vehicle.

To remove the rear brake shoes, start by loosening the wheel lug nuts and raising the rear of the vehicle, supporting it securely on jackstands. Release the parking brake and remove the wheel. Then, remove the adjuster lever and the star-wheel assembly. Depress the front shoe retainer and turn it to remove it, followed by removing the front brake shoe. Remove the rear shoe retainer and allow the shoe to come free. Pry open the clip to disconnect the parking brake lever from the rear shoe. For installation, begin by lubricating the backing plate contact points after thoroughly cleaning it. Crimp the clip to attach the new rear shoe to the parking brake lever and install the pin through the backing plate and the rear shoe. Install the spring and the retainer to the pin, using a special tool to compress the spring and engage the retainer. Repeat the same procedure for the front brake shoe. Clean the star-wheel adjuster and lightly lubricate it before installing the star-wheel assembly with the star to the front. Install the adjuster lever and the upper spring, hooking it into the adjuster. Install the lower spring and adjust the star wheel to give a very light drag when the brake drum is turned. Before reinstalling the drum, it should be checked for cracks, score marks, deep scratches, and hard spots. If any of these conditions exist, the drum must be taken to have it resurfaced.

To remove the rear brake discs, start by measuring the thickness of the lining material on the shoes. If it is 1mm or less, the shoes should be replaced. Inspect the drum portion of the disc for any scoring, grooves, or cracks caused by heat. If any of these conditions exist or if there is significant wear to the drum, the disc must be replaced. Wash off the brake parts with brake system cleaner. Turn the star wheel adjuster until it is at its shortest setting, with the threads disappearing into the adjuster. Remove the adjuster springs, adjuster, and return spring. Then, remove the rear shoe hold-down retainer, spring, pin, and shoe, followed by the forward shoe hold-down retainer, spring, pin, and shoe. Thoroughly clean the backing plate and lubricate the brake shoe contact areas with high-temperature grease. Clean and lubricate the adjuster. To install the brakes, place the forward shoe in position and install the hold-down retainer, spring, and pin. Repeat this step for the rear shoe. Install the return spring, adjuster, and adjuster spring. Install the brake disc and secure it against the hub using two lug nuts with washers. Adjust the rear parking brake shoes. Install the caliper bracket and brake caliper, ensuring that the bolts are tightened to the specified torque. Finally, install the wheel and tighten the lug nuts to the specified torque. Check the parking brake for proper operation and readjust if necessary.

Loosen the wheel lug nuts, raise the rear of the vehicle, and support it securely on jack stands while blocking the front wheels to prevent rolling. Release the parking brake and remove the wheel, ensuring that all four rear brake shoes are replaced simultaneously, but work on one brake assembly at a time to avoid mixing parts. Clean the brake assembly with brake cleaner and allow it to drip dry, avoiding the use of compressed air. Unhook the lower spring, remove the upper spring from the adjuster lever, and take out the adjuster lever and star-wheel assembly. Depress the front shoe retainer to remove the front brake shoe, then remove the rear shoe retainer and disconnect the parking brake lever from the rear shoe. After cleaning the backing plate, lubricate the contact points, crimp the clip to attach the new rear shoe to the parking brake lever, and install the pin through the backing plate and rear shoe. Use a special tool to compress the spring and engage the retainer, then repeat the procedure for the front brake shoe. Clean and lightly lubricate the star-wheel adjuster, install the star-wheel assembly with the star facing front, and install the adjuster lever, upper spring, and lower spring. Adjust the star-wheel for a very light drag when the brake drum is turned. If the brake drum cannot be easily removed, ensure the parking brake is fully released and retract the brake shoes if necessary. Before reinstalling the drum, check for cracks, score marks, deep scratches, and hard spots; if any issues are found, take the drum to an automotive machine shop for resurfacing. Install the brake drum on the axle flange, pump the brake pedal a few times, and adjust the star wheel until the shoes stop rubbing. Finally, install the wheel and lug nuts, lower the vehicle, tighten the lug nuts to the specified torque, make several forward and reverse stops, operate the parking brake to adjust the brakes, and carefully check the operation of the brakes before driving.