Renewing O-ring on cover for front final drive: Audi A6 C6
Step-by-step renewing O-ring on cover for front final drive for the Audi A6 C6: 11 steps, 2 torque figures.
Workshop procedure for AUDI — the exact step sequence and torque figures, straight from real workshop data.
🧭 Before you start
Fits: Audi A6 C6 (4F, 2004–2011)
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- Thickness of shim has been measured to fit; the shim must not be replaced with another shim of different thickness.
🔩 Torque settings
Values can differ between engine variants — check the code stamped on your block.
| Torque | Fastener / step |
|---|---|
| 23 Nm (17 lb-ft) | Tighten bolts |
| 3 Nm (2.2 lb-ft) | Tighten bolts (1) and (2) |
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
- Place used oil collection and extraction unitV.A.G 1782 below gearbox.
- Remove flange shaft (right-side) .
- Unscrew bolts on cover for final drive in the reverse sequence to the tightening sequence shown and remove cover together with outer race for tapered roller bearing and shim. [Note: Thickness of shim has been measured to fit; the shim must not be replaced with another shim of different thickness.]
- Renew O-ring (arrow).
- Install differential in gearbox housing.
- Lubricate shim and outer race for tapered roller bearing with gear oil and insert in front final drive cover as far as the stop.
- Install cover for front final drive.
- Tighten bolts (1) and (2) to 3 Nm. — 3 Nm (2.2 lb-ft)
- Tighten bolts (1 ... 11) to specified torque in the sequence indicated.
- Install flange shaft (right-side) .
- Fill up gear oil in gearbox after repairs .
Other AUDI procedures
- Removing and installing toothed belt – Audi · 56 torque figures
- Removing engine – Audi A8 D3 · 41 torque figures
- Removing camshaft timing chain from camshafts – Audi A6/A7 C7 · 38 torque figures
- Installing engine – Audi A8 D4 · 36 torque figures
- Removing and installing camshaft timing chain · 29 torque figures
- Removing and installing starter, vehicles with double clutch gearbox, DQ250-6F
- Adjusting headlight installation position
- Converting headlights from driving on right to driving on left, H4 headlights
- Removing high-pressure pipe between fuel rail and high-pressure pump
- Removing and installing shock absorbers, all wheel drive
Who makes these pages, and how
TorqFix was built by a mechanic — after a 2,700 km drive with five roadside repairs that no diagnostic tool could explain.
The figures on this page come from manufacturer workshop documentation and are shown as they are. The page is assembled automatically from that data — it is not written by an AI. The AI works in the chat, where it answers for your specific car. It writes nothing here.
Variants of the same model differ. Cross-check torque against the factory manual for your engine before final tightening.
Seen a figure that does not match your manual? Write to us — we correct it and note when. support@torqfix.com
The story behind TorqFix →Workshop data on this page last updated 20 Sep 2026.