A6 Quattro Sedan V8-4.2L (BVJ) (2007)
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Secure Guide Plate (VAS5161/19A) with knurled screws (VAS 5161/12).
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Install adapter (T40012) with gasket by hand into respective spark plug thread and apply constant pressure.
‹› Minimum pressure: 6 bar positive pressure.
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Secure engaging device (VAS 5161/6) with installation fork (VAS 5161/5) to guide plate.
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Push installation cartridge (VAS 5161/8) into guide plate.
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Engage pressure fork (VAS 5161/2) at engaging device and press down installation cartridge.
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At the same time, turn knurled bolt of installation cartridge to the right, until points engage in valve keepers.
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Lightly move knurled bolt back and forth, causing valve keepers to be pressed apart and be captured in the installation cartridge.
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Release pressure fork.
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Remove installation cartridge.
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Unfasten guide plate and turn it aside.
‹› Pressurized air hose remains connected.
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Remove valve spring with valve spring plate.
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Remove valve stem seal with Valve Seal Removal Tool (3364).
