A8L V8-4.2L (BFM) (2004)
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A - dial gauge extension 30 mm
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Install the M8 x 45 bolt - B -.
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Mount the dial gauge extension on the center of the (VW 385/17).
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Set the dial gauge (3 mm measuring range) to 0 with 2 mm preload.
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Lift the differential without rotating it in direction of - arrow -, then read the play on the dial gauge and write it down (example: 0.50 mm).
If it is necessary to repeat the measurement, then the differential must be turned 8 turns in both directions beforehand so that the tapered roller
bearings settle in.
Formula: Stotal = S2* + measured value + bearing preload
Example
