Replacing crankshaft oil seal on pulley end: Audi A8 D2 (ACK, AKF, ALG, AMX, …)

🧭 Before you start

Fits: Audi A8 D2 (4D)

Don't miss

• The central bolt is slackened off with the locking bolt3242 screwed in.
• Use waterproof felt-tip pen to mark end face of thrust washer (arrow).
• Do not lubricate sealing lip and outer rim of oil seal before pressing in.
• The thrust washer is turned so that the new oil seal runs on a new sealing track.The marked end face of the thrust washer must now be facing the engine.
• There must not be any oil at contact surface between toothed belt sprocket and crankshaft.Do not lubricate bolt for crankshaft toothed belt sprocket.

🔧 Engine codes this applies to

📐 28 workshop diagrams for ACK

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

📋 Procedure

1. Remove toothed belt .
2. Screw out central bolt (2) for crankshaft toothed belt sprocket (1). [Note: The central bolt is slackened off with the locking bolt3242 screwed in.]
3. Detach toothed belt sprocket.
4. Screw inner part of oil seal extractor T40019 out of outer part by roughly 6 turns and lock with knurled screw.
5. Lubricate threaded end of oil seal extractor, fit in position and screw as far as possible into oil seal whilst exerting firm pressure.

6. Slacken off knurled screw and turn inner part towards crankshaft until oil seal has been extracted.
7. Clamp flats of oil seal extractor in a vice and use pliers to remove oil seal.
8. Use waterproof felt-tip pen to mark end face of thrust washer (arrow).
9. Detach thrust washer from crankshaft.
10. Clean contact and sealing surfaces. [Note: Do not lubricate sealing lip and outer rim of oil seal before pressing in.]
11. Press in oil seal with thrust piece T40007 and central bolt.
12. Turn thrust washer (arrow) and attach it to crankshaft. [Note: The thrust washer is turned so that the new oil seal runs on a new sealing track.The marked end face of the thrust washer must now be facing the engine.]
13. Install crankshaft toothed belt sprocket (1) with new central bolt (2). [Note: There must not be any oil at contact surface between toothed belt sprocket and crankshaft.Do not lubricate bolt for crankshaft toothed belt sprocket.]
14. Fit toothed belt (adjust timing) .

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