S4 V8-4.2L (BHF) (2004)
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Slits - arrows - at front in camshafts must stand parallel at same height with upper edge of cylinder head.
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Insert camshaft locator T40046 into camshafts of left cylinder head. Rotate camshafts back or forth at hex head if necessary.
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Insert camshaft locator T40046 into camshafts of right cylinder head. Rotate camshafts back or forth at hex head if necessary.
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Replace all four camshaft bolts.
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Assemble left timing chain with chain sprocket and camshaft adjuster.
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Loosely screw in bolts - 1 - and - 2 -.
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Chain sprocket and camshaft adjuster must still be able to be rotated on camshaft and must not be tipped.