A4 Sedan V6-3.2L (BKH) (2007)
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Connect hose from pressure gauge VAG 1402 onto expansion hose.
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Close shut-off valve on pressure gauge (lever pointing to left).
Note:
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To avoid damaging the pump, pay attention to the following:
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Pressure gauge shut-off valve must not remain closed for more than 10 seconds during this test.
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Start engine without pressing accelerator and leave it running at idling speed.
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Take pump pressure reading at idling speed immediately after starting engine (have second mechanic take reading).
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The pressure will drop during the test, take the highest pressure reading as the test value
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Start engine and top off fluid in reservoir, if necessary.
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Take pressure reading from pressure gauge at idling speed (measurement must not take longer than 10 seconds).
Pump pressure specification
Engine Pump Pump pressure (bar)
6-cyl. gasoline engines 8E0 145 155 E8E0 145 155 F8E0 145 155 P120 to 127 120 to 127 120 to 127
8-cyl. gasoline engines with timing chain 4Z7 145 156 E123 to 130
Note:
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Replace power steering pump if specification is not attained.
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Stop engine.
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Remove pressure gauge.
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Connect expansion hose (counterhold at hex flats on expansion hose).
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Check hydraulic fluid level.
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Check steering system for leaks.
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Bleed steering system.