Brake Booster, Removing And Installing: Removing

WARNING: This page does not describe the selected car, but rather 9 other vehicles, including the 2018 Audi S6, 2018 Audi A6 Quattro, 2018 Audi A6, 2017 Audi S6, and 2017 Audi A6 Quattro. However, it is still accessible from the selected car via links, so may be relevant.

-- Turn off the engine.

-- Push the brake pedal as many times as necessary until there is no more brake assistance.

The brake pedal >>becomes hard<<.

-- Disconnect the brake pedal from the brake booster. Refer to BRAKE PEDAL, DISCONNECTING FROM BRAKE BOOSTER .

-- Remove the plenum chamber bulkhead. Refer to OVERVIEW - BULKHEAD . .

-- Remove the brake fluid reservoir. Refer to BRAKE FLUID RESERVOIR, REMOVING AND INSTALLING .

-- Disconnect the connector -1- on the Brake Booster Pressure Sensor -G294-.

Courtesy of AUDI OF AMERICA, LLC

CAUTION:

There is a Risk of damaging the vacuum hoses.

Carefully remove the vacuum hoses. A damaged vacuum hose must be replaced.

-- Disconnect and remove the vacuum hose -1- from the brake booster.

-- Place sufficient lint free clothes under the brake booster.

-- Remove the brake lines -2-.

Courtesy of AUDI OF AMERICA, LLC

-- Seal the open lines and connections with plugs from the Assembly Part Set :5Q0698311 .

-- Remove the bolts -1- for the brake booster.

-- Remove the brake booster with the brake master cylinder.