Nissan Altima L32. Instruction — part 658
EM-168
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TIMING CHAIN
4. Install the secondary timing chains and camshaft sprockets.
CAUTION:
Matching marks between the timing chain and sprockets
slip easily. Confirm all matching mark positions repeatedly
during the installation process.
• Push the sleeve of the secondary chain tensioner and keep it
pressed in with a stopper pin.
a. Align the matching marks (4), (5), (7) and (10) on the secondary
timing chain (8) (orange 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 (7) and (10)
oval (4) and (5) types. They should be used for the RH and LH
banks, respectively.
RH bank: use round type (7) and (10).
LH (6) bank: use oval type (4) and (5).
b. Align the dowel pin (3) with and pin hole on the camshaft
sprocket INT side (1), and dowel pin groove (11) with the dowel
pin on the camshaft EXH side, 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 (3) on the
back side of the camshaft sprocket (1), and install them.
• On the exhaust side, align the dowel pin on the camshaft front
end with the dowel pin groove (11) on the camshaft sprocket
(9), and install them.
• Camshaft sprocket bolts must be tightened in the next step.
Tightening them by hand is enough to prevent the dislocation
of the dowel pins (3) and dowel pin grooves (11).
• It may be difficult to visually check the dislocation of mating
marks during and after installation. To make the matching eas-
ier, make a mating mark on the sprocket teeth in advance with
paint.
SEM430G
WBIA0689E
SEM811G
TIMING CHAIN
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5. After confirming the mating marks are aligned, tighten the cam-
shaft sprocket bolts.
• Secure the camshaft using a wrench at the hexagonal portion
to tighten the bolts.
6. Pull the stopper pins out from the secondary timing chain ten-
sioners.
7. Install the crankshaft sprocket on the crankshaft.
• Make sure the mating marks on the crankshaft sprocket face
the front of the engine.
8. Install the primary timing chain.
• Install primary timing chain so the mating mark (punched) (B)
on camshaft sprocket (C) is aligned with the pink link (A) on
the timing chain, while the mating mark (notched) (E) on the
crankshaft sprocket (D) is aligned with the orange one (F) on
the timing chain, as shown.
• When it is difficult to align mating marks of the primary timing
chain with each sprocket, gradually turn the camshaft using a
wrench on the hexagonal portion to align it with the mating
marks.
• During alignment, be careful to prevent dislocation of mating
mark alignments of the secondary timing chains.
(G): Water pump
WBIA0172E
SEM923G
SEM929E
WBIA0721E
EM-170
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[VQ35DE]
TIMING CHAIN
9. Install the internal chain guide and slack guide.
CAUTION:
• Do not overtighten the slack guide bolts. It is normal for a gap
to exist under the bolt seats when the bolts are tightened to
specification.
10. Install the timing chain tensioner for the slack guide.
• When installing the chain tensioner, push in the sleeve and
keep it pressed in with the stopper pin.
• Remove any dirt and foreign materials completely from the
back and the mounting surfaces of the chain tensioner.
• After installation, pull out the stopper pin while pressing the
slack guide.
11. Reconfirm that the matching marks on the sprockets and the
timing chain have not slipped out of alignment.
SEM740G
SEM741G
SEM733G
TIMING CHAIN
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12. Install new O-rings (A) on the rear timing chain case.
13. Install the front timing chain case. Refer to
EM-155, "Removal and Installation"
14. Activate the fuel system. Check for any leaks when the system is repressurized and correct as necessary.
15. Start the engine and check all systems for leaks or improper operation. Correct as necessary.
• After starting engine, keep idling for three minutes. Then rev engine up to 3,000 rpm under no
load to purge air from the high-pressure oil chamber of the chain tensioners. The engine may
produce a rattling noise. This indicates that air still remains in the chamber and is not a matter of
concern.
ALBIA0255ZZ
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