Infiniti FX35 / FX45. Manual - part 639

 

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Infiniti FX35 / FX45. Manual - part 639

 

 

TIMING CHAIN

EM-73

< SERVICE INFORMATION >

[VQ35DE]

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2.

Install rear timing chain case as follows:

a.

Install new O-rings onto cylinder block.

b.

Install  new O-rings to cylinder head.

c.

Apply liquid gasket with the tube presser (commercial service tool) to rear timing chain case back side as
shown in the figure.
Use Genuine RTV Silicone Sealant or equivalent. Refer to 

GI-44, "Recommended Chemical Prod-

uct and Sealant"

.

CAUTION:

• For “A” in the figure, completely wipe out liquid gasket extended on a portion touching at engine

coolant.

PBIC0788E

SBIA0496E

EM-74

< SERVICE INFORMATION >

[VQ35DE]

TIMING CHAIN

• Apply liquid gasket on installation position of water pump and cylinder head very completely.

d.

Align rear timing chain case and water pump assembly with dowel pins (right and left) on cylinder block
and install rear timing chain case.
• Make sure O-rings stay in place during installation to cylinder block and cylinder head.

e.

Tighten mounting bolts in numerical order as shown in the fig-
ure.
• There are two types mounting bolts. Refer to the following for

locating bolts.

f.

After all bolts are tightened, retighten them to the specified torque in numerical order shown in the figure.
• If liquid gasket protrudes, wipe it off immediately.

g.

After installing rear timing chain case, check the surface height
difference between the following parts on the oil pan (upper)
mounting surface.

• If not within the standard, repeat the installation procedure.

Bolt length:

Bolt position

20 mm (0.79 in)

:

1, 2, 3, 6, 7, 8, 9, 10

16 mm (0.63 in)

:

Except the above

 : 12.7 N·m (1.3 kg-m, 9 ft-lb)

Standard

Rear timing chain case to cylinder block:

–0.24 to 0.14 mm (–0.009 to 0.006 in)

PBIC2680E

SEM735G

SEM943G

TIMING CHAIN

EM-75

< SERVICE INFORMATION >

[VQ35DE]

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3.

Install water pump with new O-rings. Refer to 

CO-22, "Component"

.

4.

Make sure that dowel pin hole, dowel pin and crankshaft key are
located as shown in the figure. (No. 1 cylinder at compression
TDC)
NOTE:
Though camshaft does not stop at the 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).

5.

Install timing chains (secondary) and camshaft sprockets as follows:

CAUTION:

Mating marks between timing chain and sprockets slip easily. Confirm all mating mark positions
repeatedly during the installation process.

a.

Push plunger of timing chain tensioner (secondary) and keep it
pressed in with a stopper pin.

b.

Install timing chains (secondary) and camshaft sprockets.
• Align the mating marks on timing chain (secondary) (gold link)

with the ones on intake and exhaust camshaft sprockets
(punched), and install them.
NOTE:
• Mating marks for intake camshaft sprocket are on the back

side of camshaft sprocket (secondary).

• 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 camshafts with the groove and

dowel pin on sprockets, and install them.

• On the intake side, align pin hole on the small diameter side of

the camshaft front end with dowel pin on the back side of cam-
shaft sprocket, and install them.

• On the exhaust side, align dowel pin on camshaft front end

with pin groove on camshaft sprocket, and install them.

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

Right bank

: Use circle type.

Left bank

: Use oval type.

PBIC2981E

EM-76

< SERVICE INFORMATION >

[VQ35DE]

TIMING CHAIN

• 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 eas-
ier, make a mating mark on the top of sprocket teeth and its
extended line in advance with paint.

c.

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.

d.

Pull stopper pins out from timing chain tensioners (secondary).

6.

Install tension guide.

7.

Install timing chain (primary) as follows:

a.

Install crankshaft sprocket.
• Make sure the mating marks on crankshaft sprocket face the

front of the engine.

b.

Install timing chain (primary).

PBIC0891E

KBIA1698J

PBIC2110E

SEM929E

 

 

 

 

 

 

 

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