Brake Master Cylinder, Removing And Installing: Removing

WARNING: This page does not describe the selected car, but rather 9 other vehicles, including the 2015 Audi S7, 2015 Audi RS 7, 2015 Audi A7 Quattro, 2014 Audi S7, and 2014 Audi RS 7. However, it is still accessible from the selected car via links, so may be relevant.

WARNING:

When working with brake fluid, observe relevant safety precautions and notes. Refer to BRAKE FLUID .

-- Remove the plenum chamber cover. Refer to Body Front .

-- Remove the tower brace -1- at the bolts -2 through 4-.

Fig 1: Identifying Tower Brace & Bolts

Courtesy of AUDI OF AMERICA, LLC

-- Disconnect the connectors from the engine control module and move them to the side.

-- Disconnect the connector from the brake fluid level warning switch.

-- Remove the cap from the brake fluid reservoir.

NOTE:

The cap over the brake fluid reservoir is installed only on certain models.

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

NOTE:

Protect plenum chamber from escaping brake fluid.

Brake fluid reservoir is engage in master brake cylinder on bottom side.

-- Remove brake lines -2- and seal off with plugs from repair set part no. 1H0 698 311 A.

Fig 2: Brake Booster Bolts, Brake Lines & Brake Master Cylinder Bolts

Courtesy of AUDI OF AMERICA, LLC

-- Remove brake master cylinder nuts -3-.

Fig 3: Brake Booster Bolts, Brake Lines & Brake Master Cylinder Bolts

Courtesy of AUDI OF AMERICA, LLC

-- Carefully take brake master cylinder out of brake booster.