Removing and installing brake caliper piston (1LT) — AUDI

🧭 Before you start

Fits: Audi A5 Cabriolet (8F), Audi A5 (8T, 2007–2016), Audi A4 B8 (8K, 2007–2015)

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• Place a piece of wood in the recess to prevent damaging the piston.
• When removing ensure that the bore of the cylinder is not damaged.
• The inner sealing lip on the protective cap will then locate in the piston groove.

📋 Procedure

1. Force piston out of brake caliper housing using compressed air. [Note: Place a piece of wood in the recess to prevent damaging the piston.]
2. Take out seal.
3. To do so, use removal wedge3409. [Note: When removing ensure that the bore of the cylinder is not damaged.]
4. Insert inner seal into groove (arrow) in brake caliper.
5. Push protective cap onto brake caliper housing and press it in so that it makes contact all round.

6. At this stage it should not be possible to remove the protective cap from the brake caliper housing by hand.
7. Apply a thin coat of assembly pasteG 052 150 A2 to piston and seal before inserting.
8. Press brake piston lightly against protective cap.
9. Inflate protective cap with compressed air (maximum 3 bar). The protective cap will then locate around the brake piston.
10. Press brake piston into caliper using piston resetting appliance T10145. [Note: The inner sealing lip on the protective cap will then locate in the piston groove.]

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