To service and repair the rear brake shoes of an 11-inch system, first raise and support the vehicle, then remove the wheel and tire assembly. Next, take off the clip nuts that secure the brake drum to the wheel studs and remove the drum. If the drum is difficult to remove, access the rear plug in the support plate, back off the self-adjusting mechanism using a thin screwdriver to push the lever away from the adjuster screw star wheel, and retract the brake shoes with an adjuster tool. Vacuum the brake components to eliminate brake lining dust, then use a brake spring plier tool to remove the shoe return springs. Detach the adjuster cable by sliding the cable eye off the anchor pin and unhooking it from the adjuster lever. Remove the cable guide from the secondary shoe and the anchor plate from the anchor pin, followed by the adjuster lever, which can be disengaged from the spring by sliding it forward to clear the pivot. Next, take off the adjuster lever spring from the pivot, disengage and remove the shoe-to-shoe spring from the brake shoes, and remove the adjuster screw assembly. Take out the brake shoe retainers and springs, then remove the secondary brake shoe from the support plate, followed by the strut and spring. Detach the parking brake lever retaining clip from the secondary shoe and remove the lever, then take off the primary shoe from the support plate and disengage the parking brake lever from the parking brake cable before removing the parking brake cable guide spring. For installation, clean and inspect the individual brake components, lubricate the anchor pin and brake shoe contact pads on the support plate with high-temperature grease or Lubriplate, and also lubricate the adjuster screw socket, nut, button, and screw thread surfaces. Attach the parking brake lever to the secondary shoe and secure it with the retaining clip, then install the primary shoe on the support plate using new spring retainers and pin. Place the spring on the parking brake strut and engage it in the primary shoe, followed by installing the secondary shoe on the support plate, inserting the strut in the shoe, and guiding the shoe onto the anchor pin, temporarily securing it with a retaining pin. Install the anchor plate and adjuster cable eyelet on the support plate anchor pin, position the cable guide in the secondary shoe, and assemble the adjuster screw between the brake shoes, ensuring the adjuster screws are correctly installed, marked L (left) and R (right). Attach the adjuster lever and spring, connect the adjuster cable to the lever, and install the secondary shoe retainers and spring. Connect the shoe-to-shoe spring from the secondary shoe to the primary shoe, verify the adjuster operation by pulling the adjuster cable upward to ensure the lever lifts and rotates the star wheel, and confirm the adjuster lever properly engages the star wheel teeth. Finally, install the parking brake cable into the guide spring and insert it into the backing plate, adjust the brake shoes to the drum with a brake gauge, install the wheel and tire assembly, remove the support, and lower the vehicle.