Checking vane pump delivery pressure, W12 petrol engine: VW Touareg I

🧭 Before you start

Fits: VW Touareg I (7L, 2002–2010)

📋 Procedure

1. Remove front left wheel.
2. Remove front left wheel housing liner General body repairs, exterior66Wheel housing liners; Assembly overview - front wheel housing liner.
3. Remove air filter completely 24.
4. Remove noise insulation for engine General body repairs, exterior50Assembly overview - noise insulation.
5. Clamp suction hose with hose clamp3094.

6. Unscrew pressure line (1) from vane pump.
7. Install adapters on vane pump and pressure line. Only in this position vane pump and pressure line can be installed correctly.
8. Check for correct positioning of adapters as shown in assembly overview in illustration.
9. Remove hose clamp3094 from suction line.
10. Start engine and if necessary replenish hydraulic fluid in reservoir.
11. Turn steering wheel approx. 10 times from lock to lock.
12. Now check delivery pressure.
13. With engine idling, close shut-off valve (position (1)) for no longer than 5 seconds and note pressure.
14. Remove gauge and adapter.
15. Bleed steering system .
16. Check level of hydraulic fluid and top up if necessary 17.1Power steering: check fluid level.
17. Check steering system for leaks .

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