Removing and installing pistons: Audi A3 (ASE, AXW, BDX, BHD, …)

🧭 Before you start

Fits: Audi A3 (8V, 2012–2020); platform code 85

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• Mark installation position and cylinder number of piston.
• Mark installation position and matching of cylinder and conrod bearing cap to conrod .
• If piston pin is difficult to remove, heat piston to approx. 60 °C.
• Renew bolts tightened with specified tightening angle.

🔧 Engine codes this applies to

📋 Procedure

1. Remove cylinder head .
2. Remove sump .
3. Unscrew bolts (arrows) and remove suction pipe (1).
4. Detach baffle plate (2).
5. Remove sump (top section) and detach baffle plate.

6. Mark installation position and cylinder number of piston.
7. Mark installation position and matching of cylinder and conrod bearing cap to conrod .
8. Remove conrod bearing cap and pull out piston and conrod upwards. [Note: If piston pin is difficult to remove, heat piston to approx. 60 °C.]
9. Take circlip out of piston pin boss.
10. Use driftVW 222 A to drive out piston pin. [Note: Renew bolts tightened with specified tightening angle.]
11. Oil running surfaces of bearing shells.
12. Install piston using commercially available piston ring clamp; note installation position .
13. Install conrod bearing cap; note installation position .
14. Install cylinder head .
15. Install sump .
16. Install sump (upper section) .

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