How to overhaul the Parking Brake Shoe on Toyota 4Runner?

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As a first step to overhaul the parking brake assembly the mechanic must remove the rear wheel before disassembling the rear disc brake caliper assembly LH by removing 2 bolts without disconnecting the flexible hose. Remove the parking brake and take out the rear disc while marking both the disc and axle shaft. Adjust the shoe until wheel rotation becomes easy if needing to remove difficult discs. The brake drum gauge should measure the disc's inside diameter to confirm it remains within the specifications of 210 mm and 211 mm. Utilize needle-nose pliers to remove the 2 return tension springs before sliding out the front shoe for compression spring extraction. Proceed to remove the parking brake shoe strut LH and the brake shoe by releasing the cup claw to disconnect the parking brake cable from the shoe lever followed by removing the tension spring and shoe adjuster screw set as well as the pair of shoe hold-down springs and 4 cups and 2 pins. A screwdriver should be used to remove the C-washer along with the parking brake shoe shim and shoe lever. Use a ruler to check if the lining on the shoe meets the required standards of 4.0 mm while being at least 1.0 mm thick; install a new brake shoe when necessary. A thorough inspection requires you to grind the shoe lining with chalk on the disc until they reach proper contact. High-temperature grease needs to be applied on the shoe-attached surface of the backing plate prior to shoe and lever installation and C-washer addition. Use a feeler gauge to check the clearance which must be below 0.25 mm; obtain a new shim if the measurements fail to meet criteria. The adjusting bolt and piece should be lubricated before adding the shoe adjusting screw set and tension spring to both shoes followed by installing the pins and 4 cups and 2 shoe hold-down springs. The first step is connecting the parking brake cable to the shoe lever before moving to install the front and rear parking brake shoe followed by the parking brake shoe strut LH and compression spring with return tension springs where the front side spring should be installed first. Regular inspection of all components must verify complete installation together with no residue of oil or grease located on friction surfaces. Temporarily attach hub nuts to adjust the parking brake shoe clearance by removing the hole plug while expanding the shoes until a disc lock occurs then contracting the adjuster to achieve 8 notched smooth rotation of the disc. Check that the brake system is free of drag before placing the hole plug in position. While finishing the installation of the rear disc brake caliper assembly LH, use two bolts to fasten the components with 105 Nm torque then reinstall the rear wheel applying 112 Nm torque to it before adjusting the parking brake pedal travel to proper setting.

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