Toyota 47200-08071
Brake Booster

The process for vacuum brake booster removal starts with verifying the brake booster push rod adjustment status and maintaining the diameter converting unit and brake coupling stability. Particles from the booster vacuum should be released through repeated braking pedal presses before you disconnect the brake master cylinder from the brake booster. Start your brake booster removal by taking off the front wheel followed by draining brake fluid before washing all fluids that touch painted areas. Disconnect the battery and remove the front door scuff plate LH before removing the cowl side trim board LH by unfastening its nut and cowl trim board plate LH. Unscrew all 2 bolts that secure the instrument panel finish panel sub-assembly lower LH before you detach the instrument panel safety pad insert sub-assembly No. 1 by removing its 4 bolts. Unfasten the cowl top panel sub-assembly outer front and then detach the air cleaner assembly with corresponding hose. Use Special Service Tool: 09023-00101 to detach the brake actuator assembly from cars without VSC functionality and to take off the ABS & traction actuator assembly from vehicles with VSC. The brake line detachment requires removal of components including front brake tubings numbered 1, 2, 3, and 4 and the rear brake tubings numbered 1 and 2. The first step includes removing the push rod pin from the brake booster push rod followed by detaching the brake master cylinder assembly with a clip which breaks the connection of the brake master cylinder reservoir hose from the brake master cylinder union and the vacuum hose from the brake vacuum check valve assembly. The brake booster with master cylinder can be extracted by first removing the 4 nuts and clevis. Beginning by removing the brake booster gasket attached to the brake booster with master cylinder requires extraction of both the brake vacuum check valve assembly and its corresponding check valve grommet from the brake booster assembly.

Start with the brake vacuum check valve assembly and check valve grommet, followed by a new brake booster gasket.

Remove the instrument panel finish panel sub-assembly lower LH by unscrewing the 2 bolts.

Remove the front door scuff plate LH, cowl side trim board LH, and the instrument panel finish panel sub-assembly lower LH by removing the respective nuts and bolts.