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| Connect the pneumatic hose -1- (pneumatic support) at tester. |
Note If there is water in the inspection glass, drain water via the drain plug -6-. |
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| Set the pressure to 0.05 MPa (0.5 bar) with the pressure control valve -2-. |
Caution The pressure must not be greater than 0.05 MPa (0.5 bar)! A too high pressure can damage the engine. |
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| Open valve -4- and wait until the test circuit is filled. If necessary regulate the pressure to 0.05 MPa (0.5 bar). |
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| Listen to, touch or use commercially available leak search spray or the ultrasonic measuring device e. g. -V.A.G 1842- to check the charge-air system with exhaust gas turbocharger for leak points. |
Note t
| Minor leaks are permissible on the suction side of the turbocharger, because the intake hoses are not designed for overpressure. |
t
| A small amount of air escapes via the valves into the engine. For this reason no pressure test is possible. |
t
| In case of a leak point, observe the instructions for the charge air system during the installation → Chapter. |
t
| Before removing the adapter, depressurize the test circuit by detaching the coupling from the adapter -1687/10-. |
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