GTI L4-2.0L Turbo (BPY) (2007)
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Set slide ring -1- on hand vacuum pump VAS 6213 to position -B- for "pressure".
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Switch on turbocharger tester V.A.G 1397A and set slider switch to position II.
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Secure universal dial gauge holder VW 387 on turbocharger -arrow-.
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Secure dial gauge VAS 6341/1 with 30 mm extension VAS 6341/3 and level tester VAS 6341/4 on universal dial gauge holder VW 387.
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Set dial gauge VAS 6341/1 to 0 bar with 1 mm pre-load.
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Rotate indicator of dial indicator VAS 6341/1 to 0.
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Check dial indicator for ease of movement.
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Operate hand vacuum pump VAS 6213 until turbocharger tester V.A.G 1397A displays 350 ± 5 mbar.
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Dial gauge must display 4.1 mm to 4.3 mm, otherwise rotate linkage of vacuum diaphragm until value is displayed.
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Tighten lock nut hand-tight.
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Repeat measurement.
NOTE: The mm specifications apply to the value read out (includes 1 mm pre-load).
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Release pressure via pressure regulator valve VAS 6342 to 0 mbar.
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Set dial gauge VAS 6341/1 to 0.
NOTE: The following measurements must be performed in one sequence. In the meantime, pressure must not dissipate to 0.
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Operate hand vacuum pump VAS 6213 until turbocharger tester V.A.G 1397A displays 350 ± 5 mbar.
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Read value on dial indicator VAS 6341/1 and note.
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Operate hand vacuum pump VAS 6213 until turbocharger tester V.A.G 1397A displays 650 to 700 mbar.
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Release pressure via pressure regulator valve VAS 6342 to 350 ± 5 mbar.
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Read value on dial indicator VAS 6341/1 and note.
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Add value 1 and 2 and divide by 2.
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The result (mean value) must be 5 ± 0.25 mm.
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If result (mean value) is not 5 ± 0.25 mm, correct adjustment, tighten lock nut hand-tight and repeat measurement.
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If result (mean value) is 5 ± 0.25 mm, tighten lock nut to 9 Nm and secure with sealing wax.
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Secure securing plate above linkage of vacuum diaphragm.