A8 Quattro Sedan V8-4.2L (AKB) (2002)
Removing
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Cylinder head installed
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Remove camshafts.
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Remove spark plugs with spark plug wrench 3122B
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Turn valve roller lever up and secure with rubber band.
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Install mounting plate VAS 5161/7 from VAS 1561 to cylinder head.
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Secure plate with serrated screws VAS 516/12.
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Using drift VAS 5161/3, loosen valve keepers by tapping with plastic hammer.
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Install serrated support VAS 5161/6 with VAS 5161/5 into plate 5161/7.
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Install cartridge VAS 5161/8 into plate VAS 5161/7.
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Install pressure hose adapter T40012 with sealing ring into applicable spark plug hole and hand-tighten.
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Attach air hose and apply steady pressure.
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Minimum air pressure 6 bar (87 psi)