A8L Quattro Sedan W12-6.0L (BSB) (2005)
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Remove bolt - 3 - and guide piece - 2 -.
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Pull tensioning rail - 4 - from mounting pin.
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Pull guide rail - 1 - from mounting pins.
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Remove mounting pins - 1 -.
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Remove timing chain for cylinder bank 2 (left), beginning at the intake camshaft adjuster - 2 -.
‹› To ease the removal of the timing chain, rotate the camshaft adjuster back and forth slightly.
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Pull tensioning rail - 1 - and guide rail - 2 - for cylinder bank 1 (right) from mounting pins.