M35x AWD V6-3.5L (VQ35DE) (2007)
c. After confirming the mating marks are aligned, tighten camshaft sprocket mounting bolts.
^
Secure camshaft using a wrench at the hexagonal portion to tighten mounting bolts.
d. Pull stopper pins out from timing chain tensioners (secondary).
6. Install tension guide.
7. Install timing chain (primary) as follows:
a. Install crankshaft sprocket.
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Make sure the mating marks on crankshaft sprocket face the front of the engine.
b. Install timing chain (primary).