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

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

• Replace the seal in between the brake booster and the bulkhead after dismounting.
• Do not let any brake fluid run into the brake booster.

-- Adjust the actuator rod length with the ball head to the correct dimension. Refer to Figure.

-- Before installing the brake booster thoroughly clean the contact surface on the brake booster and the bulkhead.

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

• After inserting the in the vehicle the brake booster must be flat and completely on the new seal.

-- Insert the brake lines into the brake master cylinder by hand.

-- Tighten the union bolts -arrows- for the brake lines to the required tightening specification.

Courtesy of AUDI

-- Install the Brake System Pressure Reservoir -VX70-. Refer to Brake System Pressure Reservoir -VX70-, REMOVING AND INSTALLING .

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

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

-- Fill the brake fluid reservoir up to the "MIN" mark.

Fig 1: Brake Fluid Reservoir

Courtesy of AUDI

-- Connect the brake pedal to the brake booster. Refer to BRAKE PEDAL, ATTACHING TO BRAKE BOOSTER .

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

-- After replacing the electro-mechanical brake booster, select the "Control module, replacing" program. Refer to DIAGNOSTIC ENTRIES .

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

-- Bleed the brake system. Refer to HYDRAULIC SYSTEM, BLEEDING .