A8L Quattro Sedan V8-4.2L (BVJ) (2007)
Valve Guide Seal: Service and Repair
Valve Stem Seals, Cylinder Head Installed
Valve Stem Seals, Cylinder Head Installed
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)
‹› Adapter (T40012)
Removing
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Remove camshaft timing chains from camshafts. Refer to => [ Camshaft Timing Chains ] See: Timing Components/Timing Chain/Service and
Repair/Camshaft Timing Chains.
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Remove camshafts. Refer to => [ Camshafts ] See: Camshaft, Lifters and Push Rods/Camshaft/Service and Repair/Removal and Replacement.
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Using Spark Plug Removal Tool (3122 B), remove spark plugs.
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Place Drift (VAS 5161/3) on valve spring plate and loosen stuck valve keepers using a plastic hammer.
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Position Guide Plate (VAS 5161/19B) on cylinder head.