A8 Quattro Sedan V8-4.2L (AUX) (2001)
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Remove mounting bolts of camshaft adjuster -10.
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Remove bearing cap 1.
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Remove bearing caps 2, 4, 6, 8 and 9 and lay on a clean surface in the corresponding sequence.
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Alternating in diagonal sequence, loosen bearing caps 3, 5 and 7 of intake and exhaust camshafts and remove.
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Raise both camshafts with camshaft adjuster.
Installing
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Replace bolts for camshaft bearing and camshaft adjuster.
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Replace the half-round sealing plugs.
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Remove sealant residue from cylinder head and bearing caps.
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Replace rubber/metal camshaft adjuster gasket and spread thin layer of sealant on hatched surface.
- Sealant -
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Place the drive chain onto the camshaft chain sprockets as follows: