RS 4 Quattro Cabriolet V8-4.2L (BNS) (2008)
3 - Pressure hose
4 - Hose from adapter set V.A.G 1402/6
5 - Pressure gauge V.A.G 1402
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Remove Power steering test unit V.A.G 1402 from pressure hose.
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Remove hose clamps up to 25 mm dia. 3094.
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Ensure lever on pressure gauge stands in the open position - 1 -.
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Start engine without giving gas.
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Turn steering wheel from lock to lock about 10 times.
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Switch off engine and, if needed, top off hydraulic fluid in reservoir.
Note:
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To avoid damage to pump, observe the following:
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Pressure gauge shut-off valve must not remained closed longer than 10 seconds during this test.
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Start engine without giving gas and run at idle.
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Read pump pressure immediately after starting at idle speed (have it read by second technician, if necessary).
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Because pressure falls over the course of the test, the highest pressure shown is the decisive measurement
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Check delivery pressure.
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Start engine and close shut-off valve to the closed position - 2 - while engine is idling and read pressure (lever must face away from pressure hose).
Do not perform measurement longer than 10 seconds.