OEM 2000 Toyota Sienna Brake Booster

2000 Toyota Sienna Parts Questions & Experts Answers

• Q: How to service and repair the vacuum brake booster on 2000 Toyota Sienna?

  A: The process to service and repair the vacuum brake booster starts with removing the 2 cowl top ventilator louvers, the outer front cowl top panel and the master cylinder as well as ABS actuator assembly. Start the repair of the vacuum brake booster by disconnecting its vacuum hose and removing lower finish panel and insert No. 1 safety pad. To remove the pedal return spring together with its clip and clevis pin you must first uninstall the cruise control ECU and the pedal return spring before you can retrieve the clip and clevis pin. First detach the brake booster through removal of its 4 nuts and clevis before extracting the brake booster and gasket. The installer should start by mounting the brake booster using a new gasket before attaching the clevis to the operating rod and torquing booster installation nuts to 13 Nm (130 kgf-cm, 9 ft. lbs.). After inserting the clevis pin into both the clevis and brake pedal you should keep it secured by using the clip before installing the pedal return spring followed by the cruise control ECU while torquing it at 5.0 Nm (51 kgf-cm, 41 inch lbs.). View the following procedure for adjusting the booster push rod length by installing the gasket on the master cylinder and using Special Service Tool: 09737-00010 to position its platform against the gasket followed by lowering the pin until it makes a slight contact with the piston. Set the gasket and ABS actuator bracket on the booster and slightly tighten its screws to secure the bracket before placing Special Service Tool: 09737-00010 upside down for positioning on the booster. Before adjusting the booster push rod length measure the space between the rod and pin head to reach 0.35 mm (0.014 inch) then adjust the rod to make a slight contact with the pin's head by depressing the brake pedal. Proceed to reinstall the ABS actuator assembly followed by the master cylinder then attach the vacuum hose to the brake booster. People should replace the front cowl top panel along with the 2 ventilator louvers before filling brake fluid into the reservoir and bleeding the brake system. After leak inspection verify brake pedal operation while you tighten the clevis lock nut to 25 Nm (260 kgf-cm, 19 ft. lbs.). Finally, perform an operational check.