Front Brake Pads, FN-3: Installing

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-- Clean the brake caliper housing.

NOTE:

Before inserting new brake pads, press the piston back into the cylinder using the piston resetting tool. Before pushing back the piston, siphon some of the brake fluid out of the brake fluid reservoir. Otherwise brake fluid and leak out and cause damage.

Clean brake caliper with mineral spirits exclusively.

WARNING:

Brake fluid is poisonous. NEVER siphon brake fluid with your mouth!

-- Press piston back.

Use the piston resetting tool T10145.

Fig 1: Pressing Piston Back Into Caliper Housing

Courtesy of AUDI OF AMERICA, LLC

-- Insert brake pad with retaining spring into brake caliper housing (piston).

Fig 2: Contact Points

Courtesy of AUDI OF AMERICA, LLC

NOTE:

The inner surface (with tension spring) is indicated by an arrow. The arrow must point in the rotation direction of the brake rotor when driving forward. If improperly installed, noises could result.

-- Remove any protective film from the brake pad backing plate.

-- Install outer brake pad on brake carrier.

-- Install both guide pins in the brake caliper housing and tighten.

Fig 3: Identifying Caliper Guide Pins, Removal/Installation

Courtesy of AUDI OF AMERICA, LLC

-- Insert both caps -arrow-.

Fig 4: Caliper Guide Pin Caps

Courtesy of AUDI OF AMERICA, LLC

-- Install retaining spring in brake caliper housing.

NOTE:

Retaining spring must be pressed under brake carrier after it is inserted in both holes. If improperly installed, the wear of the outer brake pad cannot be adjusted, thereby increasing brake pedal travel.

After installing brake pads, depress brake pedal several times firmly to properly seat brake pads in their normal operating position.

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