S4 Quattro Sedan V6-2.7L Turbo (APB) (2000)
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The notch on the exhaust camshaft is offset slightly towards the inside in relation to chain roller-1-.
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Do not mark the chain with a center punch or by making a notch or similar.
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Unscrew bolts securing camshaft adjuster -6-.
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Remove bearing caps 1, 3, 5 and 7 from inlet and exhaust camshafts and place them in correct order on a clean surface.
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Loosen bearing caps 2 and 4 alternately and in diagonal sequence, and remove from both camshafts.
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Take out both camshafts together with camshaft adjuster.
Installing
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Replace rubber/metal gasket for camshaft adjuster and apply a thin coat of sealant D 454 300 A2 to shaded area.
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Fit drive chain on camshaft sprockets as follows:
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When old chain is being used again, fit chain so that paint markings (arrow) are in line.