Brake Master Cylinder, Removing And Installing: Installing

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 .

Observe the following during installation:

Before installing brake booster, clean plenum chamber of remaining escaping brake fluid.
When installing together the brake master cylinder and brake booster, make sure that the push rod is correctly located in the brake master cylinder.

-- Install the master brake cylinder.

-- Install and tighten the nuts for the master brake cylinder -3-.

Fig 1: Brake Booster Bolts, Brake Lines & Brake Master Cylinder Bolts

Courtesy of AUDI OF AMERICA, LLC

-- Insert the brake lines -2- into the master brake cylinder first and tighten them loosely.

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

Courtesy of AUDI OF AMERICA, LLC

-- Tighten the brake lines -2-. Refer to 10.

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

-- Slide the securing pin -3- through the brake fluid reservoir and brake master cylinder.

Fig 3: Overview Of Brake Booster/Master Brake Cylinder

Courtesy of AUDI OF AMERICA, LLC

NOTE:

Make sure the securing pin is seated correctly. The angle must sit in the mount on the brake fluid reservoir.

-- Install the cap for the brake fluid reservoir.

NOTE:

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

-- Connect the connector to the engine control module.

-- Install the tower brace -1- with the bolts -2 through 4 -.

Fig 4: Identifying Tower Brace & Bolts

Courtesy of AUDI OF AMERICA, LLC

-- Fill the brake fluid reservoir.

Do not add more brake fluid above the "MAX" mark -1- otherwise it will leak out of the reservoir.

Fig 5: Identifying Brake Fluid Level Marks On Reservoir

Courtesy of AUDI OF AMERICA, LLC

-- Connect the connector to the brake fluid level warning contact.

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

-- Refer to BRAKE SYSTEM, BLEEDING

CAUTION:

Make sure the brakes are working correctly before driving the vehicle.