Replacing pump valve unit: Audi A8 D3
Step-by-step replacing pump valve unit for the Audi A8 D3: 3 steps, 1 torque figure. What to remove, what to tighten and to how many Nm, what to check.
Workshop procedure for AUDI — the exact step sequence and torque figures, straight from real workshop data.
🧭 Before you start
Fits: Audi A8 D3 (4E, 2002–2010)
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- Replace the O-rings (B).Moisten both O-rings with coolant before fitting.Insert the rubber bushes (E) in the pump valve unit and in the holder (F) as shown.
🔩 Torque settings
Values can differ between engine variants — check the code stamped on your block.
| Torque | Fastener / step |
|---|---|
| 2 Nm (1.5 lb-ft) | Screw out the bolts (A |
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
- Remove the pump valve unit .
- Screw out the bolts (A) (tightening torque 2 Nm). — 2 Nm (1.5 lb-ft)
- Detach the coolant pipes: [Note: Replace the O-rings (B).Moisten both O-rings with coolant before fitting.Insert the rubber bushes (E) in the pump valve unit and in the holder (F) as shown.]
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 front seat backrest (front bucket seat)
- Removing and installing condenser, vehicles with 4-cyl. engine
- Removing and installing fuel delivery unit/fuel gauge sender (four-wheel drive)
- Renewing oil seal at Hall sender – Audi A6 C5
- Checking accelerator position sender G79
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.