Q7 Quattro V6-3.6L (BHK) (2007)
Valve Guide Seal: Service and Repair
Valve Stem Seals
Special tools, testers and auxiliary items required
‹› Spark plug removal tool (3122 B)
‹› Valve seal removal tool (3364)
‹› Valve stem seal driver (3365)
‹› Valve cotter disassembly and assembly device (VAS 5161) with guide plate (VAS 5161/26)
‹› Adapter (T40012)
Procedure
‹› Engine removed.
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Camshafts, removing => [ Camshafts ] See: Camshaft, Lifters and Push Rods/Camshaft/Service and Repair.
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Mark the allocation of the roller rocker lever and hydraulic adjusting elements so they can be installed again.
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If necessary, remove roller rocker levers with hydraulic adjusting elements and place them on a clean surface.
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Remove ignition coils.
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Remove spark plugs with spark plug removal tool (3122 B).
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Move piston for respective cylinder to "Bottom Dead Center " (BDC) position.
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Position drift (VAS 5161/3) on valve spring plate.
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Loosen stuck valve keepers with a plastic hammer.
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Position guide plate (VAS 5161/26) on cylinder head.