2004 INFINITI FX35 Timing chain

EM-74
[VQ35DE]
TIMING CHAIN
Revision: 2004 November 2004 FX35/FX45
6. After installing rear timing chain case, check surface height dif-
ference between following parts on oil pan mounting surface.

If not within standard, repeat above installation procedure.
7. Position crankshaft so No. 1 piston is set at TDC on the com-
pression stroke.

Make sure that dowel pin hole, dowel pin and crankshaft key
are located as shown in the figure.
NOTE:
Though camshaft does not stop at position as shown in the
figure, for the placement of cam nose, it is generally accepted
camshaft is placed for the same direction of the figure.
CAUTION:
Hole on small dia. side must be used for intake side dowel pin hole. Do not misidentify (ignore
big dia. side).
8. Install timing chains (secondary) and camshaft sprockets.
CAUTION:
Matching marks between timing chain and sprockets slip
easily. Confirm all matching mark positions repeatedly dur-
ing the installation process.
a. Push plunger of secondary chain tensioner and keep it pressed
in with a stopper pin.Standard (Rear timing chain case to cylinder block):
–0.24 to 0.14 mm (–0.0094 to 0.0055 in)
SEM943G
Camshaft dowel pin hole (intake side)
: At cylinder head upper face side in each bank.
Camshaft dowel pin (exhaust side)
: At cylinder head upper face side in each bank.
Crankshaft key
: At cylinder head side of right bank.
KBIA1073E
SEM430G

TIMING CHAIN
EM-75
[VQ35DE]
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Revision: 2004 November 2004 FX35/FX45
b. Install timing chains (secondary) and camshaft sprockets.

Align the mating marks on secondary timing chain (gold link)
with the ones on intake and exhaust camshaft sprockets
(stamped), and install them.
NOTE:

Mating marks for intake camshaft sprocket are on the back
side of secondary camshaft sprocket.

There are two types of mating marks, circle and oval types.
They should be used for the right and left banks, respec-
tively.

Align dowel pin and pin hole on camshaft with the groove and
dowel pin on sprocket, and install them.

On the intake side, align the pin hole on the small diameter
side of camshaft front end with dowel pin on the back side of
camshaft sprocket, and install them.

On the exhaust side, align dowel pin on camshaft front end
with the pin groove on camshaft sprocket, and install them.

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.

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.

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 top of sprocket teeth and
its extended line in advance with paint.
9. After confirming the mating marks are aligned, tighten camshaft
sprocket mounting bolts.

Secure camshaft using a wrench at the hexagonal portion to
tighten mounting bolts.Right bank : use circle type.
Left bank : use oval type.
PBIC2049E
PBIC0891E
KBIA1698J

EM-76
[VQ35DE]
TIMING CHAIN
Revision: 2004 November 2004 FX35/FX45
10. Pull stopper pins out from timing chain tensioners (secondary).
11. Install primary timing chain as follows:
a. Install crankshaft sprocket.

Make sure the mating marks on crankshaft sprocket face the
front of engine.
b. Install primary timing chain.

Install primary timing chain so the mating mark (punched) on
camshaft sprocket is aligned with the yellow link on timing
chain, while the mating mark (notched) on crankshaft
sprocket is aligned with the orange one on timing chain, as
shown.

When it is difficult to align mating marks of primary timing
chain with each sprocket, gradually turn 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 secondary timing chains.
SEM923G
SEM929E
PBIC1132E

TIMING CHAIN
EM-77
[VQ35DE]
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Revision: 2004 November 2004 FX35/FX45
12. Install internal chain guide and timing chain tensioner (primary).
13. Install slack guide.
CAUTION:
Do not overtighten slack guide mounting bolts. It is normal
for a gap to exist under the bolt seats when mounting bolts
are tightened to specification.
14. Install chain tensioner for slack guide.

When installing chain tensioner, push in sleeve and keep it
pressed in with stopper pin.

Remove any dirt and foreign materials completely from the
back and the mounting surfaces of chain tensioner.

After installation, pull out stopper pin by pressing slack guide.
15. Reconfirm that the mating marks on sprockets and timing chain have not slipped out of alignment.
SEM740G
SEM741G
SEM733G

EM-78
[VQ35DE]
TIMING CHAIN
Revision: 2004 November 2004 FX35/FX45
16. Install new O-rings on rear timing chain case.
17. Install front oil seal on front timing chain case.

Apply new engine oil to the oil seal edges.

Install it so that each seal lip is oriented as shown in the fig-
ure.

Using suitable drift, press-fit oil seal until it becomes flush with
front timing chain case end face.

Make sure the garter spring is in position and seal lip is not
inverted.
18. Install water pump cover and chain tensioner cover to front tim-
ing chain case.

Apply liquid gasket to front timing chain case front side as
shown in the figure with tube presser [SST: WS39930000 ( –
)].
Use Genuine RTV Silicone Sealant or equivalent. Refer to
GI-48, "
RECOMMENDED CHEMICAL PRODUCTS AND
SEALANTS".
SBIA0497E
SEM715A
PBIC0790E
SEM744GA

TIMING CHAIN
EM-79
[VQ35DE]
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Revision: 2004 November 2004 FX35/FX45
19. Install front timing chain case as follows:
a. Apply liquid gasket to front timing chain case back side as
shown in the figure with tube presser [SST: WS39930000 ( – )].
Use Genuine RTV Silicone Sealant or equivalent. Refer to
GI-48, "
RECOMMENDED CHEMICAL PRODUCTS AND
SEALANTS".
b. Install dowel pin on rear timing chain case into dowel pin hole on
front timing chain case.
c. Tighten bolts to the specified torque in order as shown in the fig-
ure.
d. After tightening, retighten them to specified torque in numerical
order shown in figure.
20. After installing front timing chain case, check the surface height
difference between the following parts on the oil pan mounting
surface.

If not within specification, repeat the installation procedure.
21. Install right and left intake valve timing control covers as follows:
a. Install seal rings in shaft grooves.
b. Apply liquid gasket to intake valve timing control covers as
shown in the figure with tube presser [SST: WS39930000 ( – )].
Use Genuine RTV Silicone Sealant or equivalent. Refer to
GI-48, "
RECOMMENDED CHEMICAL PRODUCTS AND
SEALANTS".
PBIC1133E
8 mm (0.31 in) dia. bolts : 1, 2
: 28.4 N·m (2.9 kg-m, 21 ft-lb)
6 mm (0.24 in) dia. bolts : Except the above
: 12.7 N·m (1.3 kg-m, 9 ft-lb)
KBIA1303E
Standard
Front timing chain case to rear timing chain case:
–0.14 to 0.14 mm (–0.005 to 0.0055 in)
SEM943G
SBIA0492E

EM-80
[VQ35DE]
TIMING CHAIN
Revision: 2004 November 2004 FX35/FX45
c. Install collared O-ring in front cover engine oil hole (left and right
sides).
d. Being careful not to move seal ring from the installation groove,
align dowel pins on chain case with the holes to install intake
valve timing control covers.
e. Tighten bolts in the numerical order as shown in the figure.
22. Install crankshaft pulley as follows:
a. Fix crankshaft using ring gear stopper [SST: KV10117700 (J-44716)].
b. Install crankshaft pulley, taking care not to damage front oil seal.

When press-fitting crankshaft pulley with a plastic hammer, tap on its center portion (not circumfer-
ence).
c. Tighten bolt.
d. Put a paint mark on crankshaft pulley aligning with angle mark
on crankshaft pulley bolt. Then, further retighten bolt by “60”
degrees (equivalent to one graduation).
23. Rotate crankshaft pulley in normal direction (clockwise when viewed from front) to confirm it turns
smoothly.
24. For the following operations, perform steps in the reverse order of removal.
NOTE:
If hydraulic pressure inside chain tensioner drops after removal/installation, slack in guide may generate a
pounding noise during and just after engine start. However, this does not indicate an unusualness. Noise
will stop after hydraulic pressure rises.
INSPECTION AFTER INSTALLATION

Before starting engine, check the levels of engine coolant, lubrications and working fluid. If less than
required quantity, fill to the specified level.

Run engine to check for unusual noise and vibration.
PBIC2045E
PBIC0918E
: 44.1 N·m (4.5 kg-m, 33 ft-lb)
SEM751G

TIMING CHAIN
EM-81
[VQ35DE]
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Revision: 2004 November 2004 FX35/FX45

Warm up engine thoroughly to make sure there is no leakage of engine coolant, engine oil and working
fluid, fuel and exhaust gas.

Bleed air from passages in pipes and tubes of applicable lines, such as in cooling system.

After cooling down engine, again check amounts of engine coolant, engine oil and working fluid. Refill to
specified level, if necessary.
Summary of the inspection items:
Item Before starting engine Engine running After engine stopped
Engine coolant Level Leakage Level
Engine oil Level Leakage Level
Working fluid Level Leakage Level