OEM 2005 Toyota Sienna Parking Brake Shoe

2005 Toyota Sienna Parts Questions & Experts Answers

• Q: How to overhaul the Parking Brake Shoe on 2005 Toyota Sienna?

  A: The first task in parking brake assembly overhaul requires wheel removal followed by separate caliper assembly removal without hose disconnection. The rear disc will disengage after releasing the parking brake while maintaining matchmarks between the disc and axle hub; adjusting the shoe may help with difficult removal before freeing the wheel to rotate. Use a brake drum gauge to check the brake disc inside diameter. The standard measurement must fall between 190 mm (7.480 inch) to 191 mm (7.520 inch). The parking brake shoe assembly LH No.1 can be removed by using needle-nose pliers to detach its two shoe return tension springs before disconnecting the tension spring and sliding out the assembly with the shoe hold-down compression spring and two cups and shoe hold-down compression spring Pin No.1. During the sequence of parking brake shoe assembly removal the technician must begin with the parking brake shoe adjusting screw set and parking brake shoe strut LH and continue with the parking brake shoe assembly LH No.2 process that requires disconnecting the return spring followed by sliding out the assembly then removing the shoe hold-down compression spring and both cups along with shoe hold-down compression spring pin No.2 while also disconnecting parking brake cable No.3. You should check the thickness of parking brake shoe linings using a ruler which must be at least 2.5 mm (0.098 inch) or higher and should be 1.0 mm (0.039 inch) as the minimum measurement. The disc's inside engagement with shoe lining can be checked through disc inside chalk application followed by necessary shoe lining grinding if contact seems improper. The parking brake shoe lever LH needs its C-washer, shim, and shoe lever removed to apply high-temperature grease on the attachment surface. Installation of the shoe lever and shim should use a new C-washer followed by clearance measurement using a feeler gauge which must be below 0.35 mm (0.0138 inch); the shim requires replacement at this point if clearance exceeds 0.35 mm (0.0138 inch). For the parking brake shoe assembly LH No.2 installation fit the parking brake cable No.3 then fasten it with shoe hold-down compression spring pin No.2, shoe hold-down compression spring and two cups. Before installing the parking brake shoe adjusting screw set LH apply high-temperature grease to the adjusting bolt. Then add the parking brake shoe strut LH and the parking brake shoe assembly LH No.1 with its components including shoe hold-down compression spring pin No.1, shoe hold-down compression spring, and two cups as well as tension spring and two shoe return tension springs. All components must be correctly installed with the condition that friction surfaces remain free of oil and grease residue. Install the rear disc first then adjust the parking brake shoe clearance while temporarily securing the hub nuts, extracting the hole plug to rotate the adjuster until disc locking occurs and finally rotate the adjuster backward until the disc rotates smoothly while returning eight notches. The mechanic should check brake disc rotation before fitting the hole plug and should reconnect the rear disc brake caliper assembly LH, followed by rear wheel installation with a torque of 103 Nm (1,050 kgf-cm, 76 ft. lbs.). The inspection of parking brake pedal travel requires follow-up adjustments whenever needed.