Removal & Installation (Sienna)

Remove 2 cowl top vent louvers and outer front cowl top panel. See Fig 1. Remove master cylinder. See MASTER CYLINDER .
On models without VSC, remove ABS actuator assembly. On models with VSC, disconnect brake lines and vacuum hose from power brake unit. Remove lower instrument panel finish panels to access brake pedal arm. Remove pedal return spring, clip and clevis pin.
Remove 4 nuts and clevis, and remove power brake unit.
Install power brake unit. Attach clevis pin, clip and return spring. Adjust push rod length. See POWER BRAKE UNIT PUSH ROD under ADJUSTMENTS.
Install ABS actuator assembly on models without VSC. Install master cylinder with NEW gasket. Connect vacuum hose. Fill master cylinder. Bleed system and check for leads. Adjust brake pedal, if necessary. Install cowl panel and vent louvers.

Fig 1: Exploded View Of Power Brake Unit & Cowl Components (Sienna)