A8L Quattro Sedan W12-6.0L (BSB) (2005)
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Remove bolts - 1 - and - 2 -.
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Pull lower right coolant pipe rearward and off from cylinder head.
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Remove bolts - 1 -.
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Pull middle right coolant pipe off from coolant hoses at the positions indicated by - arrows -.
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Remove bolts - 1 through 3 - and remove left timing chain cover.
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Remove chain tensioner for camshaft timing chain - arrow -.