Checking delivery pressure of vane pump - Audi S4/S6 and Audi S6 Plus with 8-cyl. engine — AUDI

🧭 Before you start

Fits: platform code 4A

• Special tools named: 3094, V.A.G 1402/3, V.A.G 1402

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• On the 8-cyl. engine, this may lead to problems. Use an appropriate banjo union in place of the adapter V.A.G 1402/3.

📋 Procedure

1. Pinch off the suction and return pipes with hose clamps 3094.
2. Unscrew the expansion hose (arrow) from the vane pump.
3. Attach sealN 013 844 4 to adapterV.A.G 1402/3.
4. Screw the adapterV.A.G 1402/3 into the vane pump in place of the banjo bolt. [Note: On the 8-cyl. engine, this may lead to problems. Use an appropriate banjo union in place of the adapter V.A.G 1402/3.]
5. Screw the hose of the pressure gauge V.A.G 1402 onto the adapterV.A.G 1402/3.

6. Close the pressure gauge shutoff valve (lever to left).
7. Plug in the injector connector.
8. Detach the hose clamp and top up the fluid level in the reservoir if necessary.
9. Start the engine.
10. Check the hydraulic fluid level .
11. Check the steering system for leaks .
12. Bleed the steering system .

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