Renewing crankshaft sprocket: Audi 2.8 TDI (AUH, BCQ)

🧭 Before you start

Fits: platform code 2DA

• Special tools named: puller

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• To counterhold engine, position special wrench3447 on vibration damper bolts.
• Heat the new sprocket to approx. 60 °C and and push onto crankshaft. Ensure that sprocket is located.

🔧 Engine codes this applies to

🔩 Torque settings

Values can differ between engine variants — check the code stamped on your block.

ℹ️ Always cross-check the exact figure against your vehicle's factory manual before final tightening — a wrong torque can damage the engine. These values are extracted from workshop data and may not cover every variant or revision.

📋 Procedure

1. Remove gearbox: 34
2. Remove vibration damper dust cap.
3. To counterhold engine, position special wrench3447 on vibration damper bolts.
4. Remove thrust plate and drive plate 30
5. Remove dual mass flywheel.

6. Position thrust plate30 - 11 into crankshaft central bore and pull sprocket and crankshaft bush off with a commercially available two arm puller.
7. Heat the new sprocket to approx. 60 °C and and push onto crankshaft. Ensure that sprocket is located.
8. Position crankshaft bush, with wide front end facing crankshaft, onto crankshaft and drive flush onto crankshaft using a plastic hammer.
9. Position dual mass flywheel onto crankshaft and tighten fastening bolts. Torque setting: 125 Nm. — 125 Nm (92 lb-ft)
10. Install thrust plate and drive plate: 30
11. Remove special wrench3447.
12. Tighten vibration damper dust cap. Torque setting: 10 Nm. — 10 Nm (7.4 lb-ft)
13. Install gearbox: 34

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