Brake Caliper, Replacing, 1LJ, 1LL, 1ZA And 1ZC: Installing

WARNING: This page is about a different car, the 2021 Audi S4 and 2021 Audi A4 Quattro. However, it is still accessible from the selected car via links, so may be relevant.

Install in reverse order of removal and note the following:

NOTE:

Clean bolts before reusing.

Replace damaged bolts.

Always replace self-locking bolts.

Coat the brake pad guides in the brake caliper with Lithium Grease :G 052 150 A2 .

Do not lubricate the seals for brake pistons and rubber components.

-- Install the brake pads.

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-- Tighten the bolts -2-.

Vehicle with brake hose with union bolt:

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-- Bring the brake hose into the installation position and tighten the union bolt -arrow-.

CAUTION:

There is a risk of damaging the brake hose.

Do not let the brake caliper hang on the brake hose. Do not support the weight with the brake hose.
Replace the brake hose if damaged.
Do not bend the brake line.
A damaged brake line must be replaced.

The brakes must not be applied when the brake caliper is removed.
Otherwise, the brake pistons will be damaged.

Vehicle with brake hose without union bolt:

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-- Insert the brake hose by hand and insert into the brake caliper.

-- Tighten the brake hose -1-.

-- Check the spring -3- for damage and if required replace.

-- Insert the brake hose into the bracket and connect it to the brake line by tightening the union bolt -2-.

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Continuation for All Vehicles:

-- Bring the connector -5- into its installed position and turn in the direction of the -arrow- until the tab -2- engages in the opening -1- on the bracket.

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-- Connect the connector -4-.

NOTE:

Make sure that the wire is routed correctly.

Make sure the wire is not blocked, bent, or rubbing against the vehicle.

NOTE:

-- Remove the :VAG1869/2 .

-- Only bleed the brakes on the wheel from which the brake caliper and the brake hose was loosened.

NOTE:

If the brake pedal still feels "soft", completely bleed the brakes.

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

WARNING:

Risk of accident!

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