Nissan Altima L32. Manual - 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

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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