TT Roadster L4-2.0L Turbo (BPY) (2008)
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If the result (mean value) is not 5 +/- 0.25 mm, correct adjustment, tighten lock nut hand-tight and repeat measurement.
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If the result (average) is 5 +/- 0.25 mm, tighten lock nut and secure with sealing wax.
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Secure securing plate - 1 - over vacuum diaphragm linkage.