OEM 2008 Toyota Highlander Brake Booster

2008 Toyota Highlander Brake Booster Parts Q&A

• Q: How to install the brake booster and related components on 2008 Toyota Highlander?

  A: Begin installation of the brake booster by applying a new brake booster gasket to the brake booster assembly. Fasten the brake booster assembly onto the body by using 4 nuts at first but keep them loose until both brake master cylinder push rod clevis and push rod clevis lock nut are installed. Then tighten all 4 nuts completely while being careful to not damage the brake lines. Secure the 2 clamps to join the brake lines onto the body while paying attention to avoid part damage with replacements for any harmed sections. The engine wire needs installation to the body through a bolt while torquing it up to 8.4 Nm (86 kgf-cm, 74 in-lbf). Users who install a security horn need to connect the alarm horn connector before installing the engine wire to the body with a bolt while maintaining 8.4 Nm (86 kgf-cm, 74 in-lbf) torque. The brake booster assembly needs a new check valve grommet after which you can install the vacuum check valve assembly. Apply the vacuum hose to the vacuum check valve then fasten it with a clip. Install the brake booster assembly to the body with four nuts while tightening them to 13 Nm (132 kgf-cm, 10 ft-lbf) after temporary lock nut tightening of the push rod clevis lock nut and brake master cylinder push rod clevis assembly on the brake booster assembly. After connecting the brake master cylinder push rod clevis use the brake pedal return spring and inspect all brake pedal measurements. The brake line joins with the No. 1 reservoir tube before installing the air cleaner cap sub-assembly followed by installation of the outer cowl top panel sub-assembly. The service technician should install the windshield wiper motor combined with link as well as the cowl top ventilator louver sub-assembly and both front wiper arm and blade assemblies (RH and LH). The installation process ends with filling the brake fluid reservoir before performing a brake master cylinder bleed along with brake line and brake actuator bleeds. Inspect for brake fluid leaks while checking the fluid level.