Checking delivery pressure of power steering pump - vehicles with 6-cyl. 2.4l, 2.8l and 3.0l petrol engine — AUDI

🧭 Before you start

Fits: Audi A6 C5 (4B)

• Opens: power steering fluid

Don't miss

• Place a cloth under the union to catch escaping hydraulic fluid.If necessary, unbolt bracket for hydraulic line to give easier access.
• Make sure lever on pressure gauge is in position (2).
• Start engine but do not press accelerator.
• Start engine, close cut-off valve (position (1)) with engine idling and read off pressure (lever must face away from pressure hose). Do not perform measurement for longer than 10 seconds.

📋 Procedure

1. Unclip the engine cover panel at the top (arrows) and detach.
2. Clamp off suction and return lines using hose clamps 3094.
3. Unscrew pipe from pressure hose (arrow). (Counterhold hexagon flats on pressure hose.) [Note: Place a cloth under the union to catch escaping hydraulic fluid. If necessary, unbolt bracket for hydraulic line to give easier access.]
4. Connect V.A.G adapters, banjo bolt and pressure hose as shown in illustration.
5. Remove hose clamps 3094.

6. Make sure lever on pressure gauge is in position (2).
7. Start engine but do not press accelerator.
8. Turn steering wheel approx. 10 times from lock to lock.
9. Switch off engine and top up hydraulic fluid in reservoir if necessary. [Note: To avoid damaging the power steering pump, please note the following points:Cut-off valve of pressure gauge must not remain closed for more than 10 seconds during this test. Start engine without pressing accelerator and leave it running at idling speed. Take pump pressure reading at idling speed immediately after starting engine (have second mechanic take reading).The pressure will drop during the test; take the highest pressure reading as the test value.]
10. Then check delivery pressure.
11. Start engine, close cut-off valve (position (1)) with engine idling and read off pressure (lever must face away from pressure hose). Do not perform measurement for longer than 10 seconds.
12. Switch off engine.
13. Remove power steering tester V.A.G 1402.
14. Install banjo bolt (see the separate procedure).
15. Check hydraulic fluid level (see the separate procedure).
16. Bleed steering system (see the separate procedure).
17. Checking steering system for leaks
18. Fit noise insulation (repair group 50).
19. Lower vehicle onto its wheels.

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