OEM 2007 Toyota Highlander Brake Booster

2007 Toyota Highlander Parts Questions & Experts Answers

• Q: How to service and repair the vacuum brake booster on 2007 Toyota Highlander?

  A: The repair process of vacuum brake boosters starts by unwiring the front suspension brace subassembly upper center followed by disconnecting the air cleaner assembly for 2AZ-FE or the air cleaner caps sub-assembly and filter element sub-assembly with the case for 1MZ-FE. The service and repair of the vacuum brake booster begins with draining brake fluid before using a suitable cleaner to dissolve adhering fluid from painted surfaces. The brake master cylinder subassembly must then come off followed by removal of the lower instrument panel finish panel subassembly. Unlock the brake pedal return spring first then detach the brake master cylinder push rod clevis through the steps of removing the clip and push rod pin while loosening the push rod lock nut for removal of the clevis. Use Special Service Tool: 09023-00101 to release the two claw fittings that fasten the clamp on the brake tubes while avoiding any tube damage. Extract the brake booster assembly by first unfastening the clip before removing the vacuum hose from the check valve assembly and after that remove the 4 nuts then carefully pull out the assembly maintaining the brake tubes and wire harness. You must take out the brake booster gasket along with the brake vacuum check valve assembly together with its grommet. The installation process begins with brake vacuum check valve assembly installation before applying a new brake booster gasket. The brake booster assembly requires installation using 4 nuts that should be torqued to 13 Nm (130 kgf-cm, 9 ft. lbs.) before vacuum hose connection. Secure the 2 clamps of the brake tube onto the body without causing any damage. Installation requires attaching the brake master cylinder push rod clevis followed by installing the lock nut and compressing it to 26 Nm (265 kgf-cm, 19 ft. lbs.). Apply lithium soap base glycol grease to the clevis pin before adding the push rod pin and its clip. Reinstall the brake pedal return spring followed by an inspection of the brake booster push rod adjustment steps before reinstalling the brake master cylinder subassembly. You need to fill the brake fluid reservoir before performing the bleeding process on the master cylinder as well as the brake line and brake actuator assembly. Check the fluid level in the reservoir while conducting leak inspections and performing brake pedal height adjustments. The service process ends by reinstalling the lower instrument panel finish panel subassembly and the air cleaner assembly for 2AZ-FE along with air cleaner case and filter element subassembly and cap for 1MZ-FE and front suspension brace subassembly upper center.