Brake Master Cylinder, Removing And Installing, With Vacuum Brake Master Cylinder: Installing

WARNING: This page is about a different car, the 2024 Audi S6 and 2024 Audi A6 Quattro. However, it is still accessible from the selected car via links, so may be relevant.

Install in the reverse order of removal while noting the following:

Do not let any brake fluid run into the brake booster.
The actuator pin for the brake lamp switch must be inserted in the brake master cylinder.

-- When inserting the brake master cylinder -1-, make sure that the pressure rod -3- is seated correctly in the brake booster -2-.

Courtesy of AUDI OF AMERICA, LLC

-- If necessary, have a second technician press the brake pedal slightly. This allows the brake master cylinder to be guided into pressure rod more easily.

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

-- Remove all cloths from the vehicle that were previously placed down.

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

CAUTION:

Faulty brakes increase the risk of an accident.

- Make sure the brakes are working correctly before driving the vehicle for the first time.