Brake Master Cylinder, Removing And Installing: Installing

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

• Replace the seal after removal.
• Do not let any brake fluid run into the brake booster.
• The actuator pin  OVERVIEW - BRAKE BOOSTER/BRAKE MASTER CYLINDER 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

-- 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 tower brace. Refer to TOWER BRACE, REMOVING AND INSTALLING .

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

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

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

Fig 1: Brake Fluid Reservoir

Courtesy of AUDI

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

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