G35x Sedan AWD V6-3.5L (VQ35HR) (2007)
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a. Push plunger of timing chain tensioner (secondary) and keep it pressed in with a stopper pin (A).
b. Install timing chains (secondary) and camshaft sprockets.
A: Camshaft sprocket (INT) back face
B: Orange link
C: Dowel groove or hole
D: Mating mark (Oval)
E: Mating mark (2 oval)
F: Mating mark (Circle)
G: Camshaft sprocket (EXH) back face
H: Mating mark (2 circle)
I: Timing chain (secondary)
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Align the mating marks on timing chain (secondary) (orange link) with the ones on intake and exhaust camshaft sprockets (punched), and
install them.
NOTE:
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Mating marks for camshaft sprockets are on the back side of camshaft sprockets (secondary).
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There are two types of mating marks, circle and oval types. They should be used for the right and left banks, respectively.
Right bank: Use circle type.
Left bank: Use oval type.
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Align dowel pin camshafts with the groove or dowel hole on sprockets, and install them.
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On the intake side, align dowel pin on camshaft front end with pin groove on the back side of camshaft sprocket, and install them.
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On the exhaust side, align dowel pin on camshaft front end with pin hole on camshaft sprocket, and install them.
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In case that positions of each mating mark and each dowel pin are not fit on mating parts, make fine adjustment to the position holding the
hexagonal portion on camshaft with wrench or equivalent.
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Mounting bolts for camshaft sprockets must be tightened in the next step. Tightening them by hand is enough to prevent the dislocation of
dowel pins.
