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Home >> Audi >> 2021 >> A4 Quattro Premium Plus, 2.0L Eng VIN B >> Repair and Diagnosis >> Brakes >> Mechanical - Hydraulic >> Mechanical Components (Brake System) (1 Of 2) >> 46 Mechanical Components >> Front Brakes >> Brake Pads, Removing And Installing >> Brake Pads, Removing And Installing, Steel Brakes 1LA/1LB >> Installing

Brake Pads, Removing And Installing, Steel Brakes 1LA/1LB: Installing

Install in reverse order of removal and note the following:

-- If the brake pads are being replaced, check the brake rotors for wear and damage.

CAUTION:

Health risk due to toxic dust from the brake system.

Irreversible deposit of dust particles in the lungs. Breathing may become impaired.

- Never blow out the brake system with compressed air.

-- Check the bearing bushings of the guide pins for damage and check that the guide pins move easily. Install the complete repair kit, if necessary. Refer to BEARING BUSHING AND GUIDE PIN, REPLACING .

Fig 1: Identifying Brake Charger/Bleeder Unit VAS5234
GWWA47-10166Courtesy of AUDI OF AMERICA, LLC
CAUTION:

There is a risk of contamination and paint damage from leaking brake fluid.

- Check the brake fluid level before pushing the brake caliper piston back into the brake cylinders.

-- If the brake fluid is up to the "MAX" marking on used brake pads, it must be extracted.

-- Use the :T10145  to press the brake caliper piston all the way back into the brake caliper housing.

Fig 2: Pressing Piston Back Into Caliper Housing
GWWA46-10042Courtesy of AUDI OF AMERICA, LLC

-- Clean the brake carrier -1- at the contact surfaces -arrows- for the brake pads.

GWWA46-10644Courtesy of AUDI OF AMERICA, LLC

-- If equipped, remove the protective film from the backing plate of the brake pad.

-- If re-using, install the marked brake pads in the same location.

-- Bring the brake pads into their installation position. Refer to Figure.

-- Bring the brake caliper housing -1- into its installation position and tighten the guide pins -arrow-.

GWWA46-10643Courtesy of AUDI OF AMERICA, LLC

-- Insert the caps -2 and 3-.

-- Bring the brake pad wear sensor into its installation position on the bracket and turn it in the direction of the -arrow- until the tab -2- engages in the hole -3- on the bracket.

GWWA46-10642Courtesy of AUDI OF AMERICA, LLC

-- Connect the connector -1-.

-- Insert the spring -1- into both holes -2- in the brake caliper housing.

GWWA46-10669Courtesy of AUDI OF AMERICA, LLC

TIP:

If improperly installed, the wear of the outer brake pad cannot be adjusted, thereby increasing brake pedal travel.

-- Check brake fluid level, and fill if necessary.

CAUTION:

Faulty brakes increase the risk of an accident.

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

-- With the vehicle stationary, firmly press the brake pedal several times so that the brake pads in the operating condition properly sit in their respective position.