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Home >> Audi >> 2022 >> S8 >> Repair and Diagnosis >> Brakes >> Mechanical - Hydraulic >> Hydraulic Components (Brakes) >> 47 Hydraulic Components >> Brake Booster/Brake Master Cylinder >> Brake Booster, Removing And Installing >> Brake Booster, Removing And Installing, Electromechanical Brake Booster >> Removing

Brake Booster, Removing And Installing, Electromechanical Brake Booster: Removing

-- If replacing the electromechanical brake booster, select the "Replace control module" program. Refer to DIAGNOSTIC ENTRIES .

-- Follow the instructions in the Vehicle Diagnostic Tester display.

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

-- Disconnect the connectors -1-.

GWWA47-10168Courtesy of AUDI OF AMERICA, LLC

-- Remove the bolts -2 and 3-.

-- To prevent brake fluid from escaping, place enough lint-free cloths in the area under the brake master cylinder.

CAUTION:

Leaking brake fluid increases the risk of injury.

Risk of skin irritation and injury.

- Wear safety gloves.

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

CAUTION:

Risk of destroying the brake lines by bending.

- Never change the shape of the brake lines.

-- Immediately close open connection points with a clean plug.

RHD vehicles

-- Free up the coolant hoses in the area of the brake booster.

Continuation for all vehicles 

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

-- If required remove the brake master cylinder. Refer to BRAKE MASTER CYLINDER, REMOVING AND INSTALLING, WITH ELECTROMECHANICAL BRAKE MASTER CYLINDER .