Touareg V8-4.2L (BAR) (2007)
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Loosen hex nut - arrows - but do not remove it completely.
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Fold wiper arm up - 2 - and loosen it from cone using sideways motions.
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Remove hex nut - 1 - completely and pull wiper arm - 2 - off wiper arm shaft.
Installing
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Install wiper arm in reverse order of removal and set the rear window wiper rest position --> [ Rear Window Wiper Blade Park Position,
Adjusting ] See: Adjustments/Rear Window Wiper Blade Park Position, Adjusting.