Removing and installing O-ring on cover for front final drive — AUDI
Removing and installing O-ring on cover for front final drive on Audi: 10 steps. What to remove, in what order, and what to check after.
Workshop procedure for AUDI — the exact step sequence and torque figures, straight from real workshop data.
🧭 Before you start
Fits: Audi Q7 (4M, 2015–)
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- Thickness of shim has been measured to fit; the shim must not be replaced with another shim of different thickness.
📋 Procedure
- Drain off gear oil in front final drive .
- Remove flange shaft (right-side) .
- Remove bolts securing cover for front final drive in the sequence (11 ... 1).
- Remove cover for front final drive 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.
- Tighten bolts for front final drive cover.
- 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
- Determining thickness of shim "S4" · 1 torque figures
- Exploded view - spoiler for rear lid · 1 torque figures
- Detaching air conditioner compressor from holder/attaching - vehicles with 8-cyl. TDI engine · 1 torque figures
- Performing first fuel filling after installing high-pressure pump - vehicles with engine codes CASA and CASB
- 1.8/2.0 TFSi (CDHA,CDHB,CDNB,CDNC,CFKA)
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.