Astra L4-1.8L (2009)
11. Remove the closure bolt (2) of the intake camshaft adjuster (1) or the closure bolt (4) of the exhaust camshaft adjuster (3).
12. Detach the intake camshaft adjuster (1) or the exhaust camshaft adjuster (3).
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Counterhold against the hexagon of the corresponding camshaft with an open-ended wrench.
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Remove the bolt (2, 4).
Installation Procedure
1. Attach the intake camshaft adjuster or the exhaust camshaft adjuster.
Note: Do not tighten the bolt.
Install the bolt.