Removing and installing brake caliper piston; Rear brakes, CI 38 — VW

🧭 Before you start

Fits: VW Jetta VI (16, 2010–2018); platform code AV2

• Opens: brake fluid
• Special tools named: 13 mm open-end spanner

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• The surfaces of the piston and seal must be cleaned only with methylated spirits and then dried.
• Apply thin coat of assembly pasteG 052 150 A2 to piston and seal before installing.
• Do not damage protective cover.

📋 Procedure

1. ⚠ It is only permissible to change the position of the brake piston with the piston compressing tool T10165. — Insert piston compressing tool T10165 so that collar rests on piston.
2. Screw piston out of brake caliper by turning thumb wheel anti-clockwise.
3. If pistons are difficult to move, a 13 mm open-end spanner can be used on intended flats (arrow A).
4. Remove seal using removal wedge3409. [Note: When carrying out repairs, install all parts supplied in repair kit.Use only methylated spirits for cleaning the brake.New brake calipers are filled with brake fluid and are pre-bled. Apply thin coat of assembly pasteG 052 150 A2 to brake cylinder, piston and seal.When repairs are performed, it is essential to appropriately pre-bleed brake calipers (without brake pads) before installing in vehicle .]
5. The surfaces of the piston and seal must be cleaned only with methylated spirits and then dried.

6. Insert seal into groove.
7. Apply thin coat of assembly pasteG 052 150 A2 to piston and seal before installing.
8. Place protective cap with outer sealing lip on piston.
9. Using removal wedge3409, insert inner sealing lip into cylinder groove.
10. When doing this, hold piston in front of brake caliper.
11. Screw in piston by turning clockwise.
12. Do not damage protective cover.
13. Use plate T10165/1 for assistance when screwing in.
14. Insert piston compressing tool T10165 so that collar rests on plate T10165/1.
15. Screw in by turning thumb wheel on piston compressing tool T10165 clockwise.

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