Lexus 46590-33020 Shoe Assy, Parking Brake, LH NO.2

Whenever one replaces brake shoes, it is important to replace the return and hold-down springs because they tend to lose tension over time which may make the shoes to drag on the drum and wear out prematurely. Firstly, loosen wheel lug nuts and raise rear of vehicle securing it with jackstands while blocking front wheels to prevent rolling. After that release the parking brake and remove the wheel. All four rear brake shoes should be replaced at once when working on one brake assembly avoiding part mix-up. Please follow this procedure of replacing a brake shoe, ensuring proper cleaning of the assembly without using compressed air and removing such parts as return spring, hold-down spring among others as directed in Figure 6-29. Then remember to ensure that parking brake is completely released when pulling off the brake drum; if you still cannot pull it off then retract the brake shoes with adjuster star wheel and screwdrivers. Once that is done, check for cracks, score marks, scratches or hard spots on the drum and where necessary resurface or replace if worn beyond resurfacing limits. Next install the brake drum, wheel, lug nuts again lower vehicle down to ground level and tighten lug nuts. Finally adjust brakes by making forward stop reverse stop operations with parking brake until good pedal action is achieved. Before taking your vehicle for a drive make sure you test thoroughly the operation of your brakes.

To replace the brake shoes, begin by removing the brake rotor and look at the shoe lining material thickness. If the thickness is worn down to 1/32-inch or less, then change the shoes. Remove the hub and bearing assembly and clean up the brake parts with a can of brake system cleaner. Use the illustrations provided for guidance in replacing your brake shoes; these will show you how to remove different springs, struts, pins, apply high temperature grease at contact surfaces as well as ensure that all components are properly engaged. Then install temporarily lug nuts securing it with lug nuts.Then, fix the hole plug on its place after backing off adjuster star wheel by eight notches. After that tighten bolts of torque plate and caliper to specified torque.Put back on wheel and tighten lug nuts to proper torque specifications.If there is a parking brake lever, check how many clicks it makes between 5-8 clicks and make adjustments as necessary.Finally, bed in shoes against drum by driving vehicle at approximately 30 mph while applying parking brakes allowing them to cool between applications perform procedure two or three times over.

With the assembly done, install the brake disc and use three wheel lug nuts to secure it. Remove the hole plug from the disc and adjust the parking brake shoe clearance using a tool or screwdriver until shoe-disc contact prevents disc turning. Back off the adjuster by eight notches, then replace the hole plug, ensuring the shoes don't drag on the disc. Install the caliper mounting bracket, followed by the brake caliper, and ensure that the bolts are properly tightened.

Built-in wear indicators emit high-pitched squealing or scraping noises when the brake pads wear down to a certain point. This noise serves as a warning, indicating the need for immediate pad replacement to prevent damage to the brake discs.