Renewing input shaft oil seal, 0BE: Audi A8 D4

🧭 Before you start

Fits: Audi A8 D4 (4H, 2010–2017)

• Opens: engine oil, gearbox oil
• Also covered elsewhere: Electronic parts catalogue

Don't miss

• A second mechanic is required for removing the rear section of the exhaust system.
• This marking (arrow) is necessary in order to maintain the original position of the coloured dot (C) on the outside of the flange.This is the only effective way to minimise the imbalance in the rear final drive.
• Check that spring of oil seal behind sealing lip is in installation position.
• Wear protective gloves.If using a hotplate, the temperature value must be monitored constantly with temperature gaugeVAS 6519. — Position propshaft flange (B) on pinion shaft (A) so that markings (arrow) are in line.

📋 Procedure

1. Disconnect exhaust system at clamps (1) and (2).
2. Remove rear section of exhaust system 26Exhaust pipes/silencers; Exploded view - silencers. [Note: A second mechanic is required for removing the rear section of the exhaust system.]
3. Unscrew gear oil drain plug (arrow) and drain off approx. 300 ml of gear oil.
4. Screw in and tighten new drain plug (arrow). Tightening torque
5. Detach propshaft from rear final drive .

6. Guide propshaft downwards between fuel tank and rear subframe and tie up on one side.
7. Remove high-temperature grease in propshaft flange on rear final drive.
8. Remove circlip (arrow).
9. Mark position of flange (B) for propshaft relative to pinion shaft (A)(arrow). [Note: This marking (arrow) is necessary in order to maintain the original position of the coloured dot (C) on the outside of the flange.This is the only effective way to minimise the imbalance in the rear final drive.]
10. Pull off propshaft flange.
11. Lay absorbent cloth (A) on subframe under final drive.
12. Pierce metal ring of oil seal (A) in direction of (arrow) using e.g. a scriber (B).
13. Then screw a self-tapping screw (arrow) into this hole in oil seal (A).
14. Pull out oil seal (A) for propshaft flange in direction of (arrow).
15. Pack space between sealing lip and dust lip half-full with sealing greaseG 052 128 A1.
16. Lightly lubricate outer circumference of oil seal with gear oil.
17. Fit new oil seal (A) on assembly sleeve T40247/1. [Note: Check that spring of oil seal behind sealing lip is in installation position.]
18. Fit assembly sleeve T40247/1 onto pinion shaft (B) together with oil seal (A).
19. Drive in new oil seal onto stop (take care to keep seal straight).
20. Heat propshaft flange (B) to 115 °C using inductive heaterVAS 6414 or a hotplate.
21. ⚠ Wear protective gloves.If using a hotplate, the temperature value must be monitored constantly with temperature gaugeVAS 6519. — Position propshaft flange (B) on pinion shaft (A) so that markings (arrow) are in line.
22. Drive on propshaft flange as far as stop using thrust piece T10380.
23. Measure thickness of old circlip (1).
24. Replace circlip (1) with a new circlip of the same thickness Electronic parts catalogue.
25. Fit new circlip (1). [Note: If the propshaft flange is being renewed, the thickness of the circlip (arrow) must be re-determined.To do so, determine the thickest circlip (arrow) that will just fit in the groove and install it. For part number refer to Electronic parts catalogue.]
26. Fill up gear oil in rear final drive 0BE .
27. Attach propshaft to rear final drive .
28. Install rear section of exhaust system 26Exhaust pipes/silencers; Exploded view - silencers.

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