Altima V6-3.5L (VQ35) (2003)
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41. Attach a suitable stopper pin to the right and left camshaft chain tensioners (for secondary timing chains)
42. Remove the intake and exhaust camshaft sprockets bolts
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Apply paint to the timing chain and camshaft sprockets for alignment during installation.
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Secure the hexagonal portion of the camshaft using a wrench to loosen the bolts.
43. Remove the secondary timing chains with camshaft sprockets.
a. Rotate camshaft slightly, and slacken timing chain of timing chain tensioner side.
b. Insert metal or resin plate [0.5 mm (0.020 inch)] into guide between timing chain and chain tensioner plunger. Remove cam sprocket and
secondary timing chain with timing chain removed from guide groove.
CAUTION: Chain tensioner plunger can move, while stopper pin is inserted in tensioner. Plunger can come out of tensioner when timing
chain is removed. Use caution during removal.
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Intake camshaft sprocket is two-for-one structure of primary and secondary sprockets.
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Handle the intake sprockets as an assembly.
CAUTION:
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Avoid impact or dropping the intake sprockets.
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Do not disassemble the intake sprockets (never loosen bolts A and B as shown).
