Altima V6-3.5L (VQ35) (2003)
/Page-542012.png)
a. Align the matching marks on the secondary timing chain (gold link) with the ones on the intake and exhaust sprockets (stamped), and install
them.
^
Matching marks for the intake sprocket are on the back side of the secondary sprocket.
^
There are two types of matching marks, round and oval types. They should be used for the RH and LH banks, respectively.
RH bank: use round type.
LH bank: use oval type.
b. Align the dowel pin and pin hole on the camshaft with the groove and dowel pin on the sprocket, and install them.
^
On the intake side, align the pin hole on the small diameter side of the camshaft front end with the dowel pin on the back side of the
camshaft sprocket, and install them.
^
On the exhaust side, align the dowel pin on the camshaft front end with the pin groove on the camshaft sprocket, and install them.
^
Mounting bolts for the camshaft sprockets must be tightened in the next step. Tightening them by hand is enough to prevent the dislocation
of the dowel pins.
^
It may be difficult to visually check the dislocation of mating marks during and after installation. To make the matching easier, make a mating
mark on the sprocket teeth in advance with paint.
7. After confirming the mating marks are aligned, tighten the camshaft sprocket mounting bolts.
^
Secure the camshaft using a wrench at the hexagonal portion to tighten the mounting bolts.