Loosen the wheel lug nuts, raise the rear of the vehicle, and support it securely on jackstands 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 only one brake assembly at a time to avoid mixing parts. Follow the illustrations for the brake shoe replacement procedure, which includes removing the adjuster lever spring, disconnecting the upper return spring, and removing the shoes. Attach the upper return spring to the trailing shoe, install the shoes and hold-down springs, and clean and lube the adjuster threads before reinstalling the adjuster wheel. 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 and other damage; 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, and adjust the star wheel until the shoes rub on the drum, then back off slightly. Install the wheel and lug nuts, lower the vehicle, and tighten the lug nuts to the specified torque. Make several forward and reverse stops and operate the parking brake to adjust the brakes for satisfactory pedal action, then carefully check the operation of the brakes before driving.