A8 Quattro Sedan V8-4.2L (AUX) (2001)
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Clamp off suction and return lines with hose clamps -3094-.
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Unbolt expansion hose on vane pump.
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Attach seal, part no. N 013 844 4 to adapter VAG 1402/3.
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Screw adapter VAG 1402/3 into vane pump in place of banjo bolt.
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Screw pressure gauge VAG 1402 hose onto adapter VAG 1402/3.
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Close shut-off valve on gauge (lever pointing to the left).
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Remove hose clamps -3094- and add fluid to reservoir if necessary.
Check pressure
Notes: To reduce the risk of damaging the pump, note the information:
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Do not allow the engine to run for more than 10 seconds when carrying out this test.
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Start the engine without pressing the accelerator and let it run at idling speed.
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Read off the pump pressure at idling speed immediately after starting the engine (if necessary, have a second technician read off the pressure).
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The pressure will drop during the test," take the highest pressure reading as the test value
Specification: 120 - 130 bar (1740 - 1885 psi)
