Renewing camshaft oil seal (toothed belt drive sprocket with M14 securing bolt) — AUDI

🧭 Before you start

Fits: Audi A8 D3 (4E, 2002–2010)

• Special tools named: T10053, T10053/3

🔧 Engine codes this applies to

📐 20 workshop diagrams for ASB

Real factory drawings for this job — timing marks, bolt locations and routing. Locked in the free view.

📋 Procedure

1. Move lock carrier to service position .
2. Loosen clamps (arrows).
3. Pivot toothed belt cover forward and disengage retaining pegs on bottom side of toothed belt cover.
4. Loosen bolt (arrow) for toothed belt tensioning roller approx. 2 turns.
5. Loosen central bolt (1) for drive sprocket for high-pressure pump approx. 2 turns using counterhold3036.

6. Use puller3032 to pull off drive sprocket for high-pressure pump.
7. Take off drive sprocket together with toothed belt.
8. Pry out oil seal using oil seal extractor hook2086.
9. Clean contact surface and sealing surface.
10. Press in oil seal as far as stop using press sleeve from T10053 and bolt T10053/3.
11. Install toothed belt for high-pressure pump 23.
12. Install lock carrier with attachments 50.
13. Slacken bolts (1).
14. Allow stop for torque reaction support to rest on rubber buffer for torque reaction support under its own weight, and tighten bolts.
15. Install bumper cover (front) 63.

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