Renewing camshaft oil seal (toothed belt drive sprocket with M10 securing bolt) — AUDI

🧭 Before you start

Fits: Audi A8 D3 (4E, 2002–2010)

• Special tools named: T10053

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• Loosen central bolt (1) for toothed belt drive sprocket approx. 2 turns using counterhold tool3036.

🔧 Engine codes this applies to

📋 Procedure

1. Remove intake manifold (top section) 23.
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 tensioning roller approx. 2 turns.
5. Loosen central bolt (1) for toothed belt drive sprocket approx. 2 turns using counterhold tool3036.

6. Use puller3032 to pull off toothed belt drive sprocket.
7. Use puller T10320 to pull off toothed belt drive sprocket.
8. Take off toothed belt drive sprocket together with toothed belt.
9. Unscrew inner section of oil seal extractor 2085 three turns out of outer section and lock inner section with knurled screw.
10. Lubricate threaded head of oil seal extractor, place it in position and screw it into oil seal as far as possible (applying firm pressure).
11. Loosen knurled screw and turn inner part against crankshaft until the oil seal is pulled out.
12. Clamp flats of oil seal extractor in vice and use pliers to remove seal.
13. Clean running surface and sealing surface.
14. Press in new oil seal as far as stop using press sleeve from T10053 and hexagon bolt M10 x 1.25 x 40 (arrow), (from fitting sleeves3241).
15. Install toothed belt for high-pressure pump 23.
16. Install intake manifold (top section) 23.

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