Brake Booster, Removing And Installing, Vacuum Brake Booster: Removing

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-- Switch off the ignition.

-- Reduce the vacuum in the brake booster by pressing the brake pedal repeatedly.

-- Remove the plenum chamber bulkhead. Refer to PLENUM CHAMBER BULKHEAD, REMOVING AND INSTALLING .

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

-- Disconnect the connector -1- for the Vacuum Sensor -G608- and connector -4- for the Brake Lamp Switch -F-.

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-- Remove the Vacuum Sensor -G608- -item 2-.

-- Pull the vacuum hose off of the brake booster and remove it; do not damage it while doing so.

-- To protect against escaping brake fluid, place enough lint-free cloths in the area below the brake booster.

-- Remove the union bolts -3- for the brake lines, then remove the brake lines from the brake master cylinder and move them slightly to the side.

-- Immediately seal the open connection points with clean plugs from the : VAS6122 .

-- Remove the windshield wiper arms. Refer to WINDSHIELD WIPER ARMS, REMOVING AND INSTALLING .

-- Remove the bolts -arrows-.

Courtesy of AUDI OF AMERICA, LLC

-- Hold the refrigerant line -1- upward.

-- Carefully pull the brake booster with the brake master cylinder forward and out of the plenum chamber, and then pivot it upward and out.

Make sure that the actuator pin for the brake lamp and the pushrod do not fall into the brake booster.