A8L V8-4.2L (BFM) (2004)
‹› If the (3366) is fastened too tightly, the camshaft adjuster can be damaged.
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Independent of the existing markings on the bearing caps, mark the sequence and install position on all bearing caps, as shown in the illustration.
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For marking, clean the bearing cap and use a waterproof felt tip pen.
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Remove the bolts for the camshaft adjuster - 10 -.
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Remove the bearing cap 1.
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Remove the bearing caps 2, 4, 6, 8 and 9 and lay on a clean surface in the corresponding sequence.
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Alternating in a diagonal sequence, loosen the bearing caps 3, 5 and 7 on the intake and exhaust camshafts and remove.
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Raise both camshafts with the camshaft adjuster.
Installing
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Replace the bolts for camshaft bearing caps and camshaft adjuster.
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Replace the half round sealing plugs.
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Remove the sealant residue from the cylinder head and bearing caps.
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Replace the rubber/metal camshaft adjuster gasket and apply a thin bead of sealant on the hatched surface.