Removing and installing brake caliper piston: VW Sharan II / SEAT Alhambra

🧭 Before you start

Fits: VW Sharan II / SEAT Alhambra (7N, 2010–)

• Special tools named: 3409

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• The surfaces of the piston and seal must be cleaned only with methylated spirits and then dried.
• Ensure that protective cap lies flush all around on brake caliper (arrows).

📋 Procedure

1. Turn spindle in (direction of arrow) using a T45 Torx socket (as a replacement for 9 mm multi-point socket bit).
2. Remove piston and protective cap from brake caliper.
3. Remove seal using wedge 3409.
4. The surfaces of the piston and seal must be cleaned only with methylated spirits and then dried.
5. Apply a thin coat of assembly paste G 052 150 A2 to piston and seal before inserting.

6. Insert seal in brake caliper.
7. Place protective cap with outer sealing lip on piston.
8. Screw thrust nut onto spindle until dimension (a) 15 mm is achieved.
9. Insert inner sealing lip of protective cap into groove (arrows) in brake caliper using removal wedge3409.
10. Push the piston onto thrust nut; this is only possible in 4 positions
11. Carefully press the piston into brake caliper, moving the piston at the same time.
12. Then, press the piston into the brake caliper until it is resting against the thrust nut.
13. Carefully turn spindle clockwise until thrust nut is located on stop.
14. Ensure that protective cap lies flush all around on brake caliper (arrows).
15. Press piston into brake caliper by hand.

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