Infiniti G35 (V35) Sedan. Manual - part 614

TIMING CHAIN

EM-55

< ON-VEHICLE REPAIR >

C

D

E

F

G

H

I

J

K

L

M

A

EM

N

P

O

1.

Install timing chain tensioners (secondary) to cylinder head as follows if removed. Refer to 

EM-48,

"Exploded View"

.

2.

Make sure that dowel pin (A) and crankshaft key (1) 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 noses, it is generally accepted
camshaft is placed for the same direction of the figure.

3.

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.

1.

Internal chain guide

2.

Camshaft sprocket (INT)

3.

Timing chain (secondary)

4.

Camshaft sprocket (EXH)

5.

Timing chain tensioner (primary)

6.

Slack guide

7.

Timing chain (primary)

8.

Crankshaft sprocket

9.

Water pump

10. Timing chain tensioner (secondary)

A.

Mating mark [punched (back side)]

B.

Mating mark (yellow link)

C.

Mating mark (punched)

D.

Mating mark (orange link)

E.

Mating mark (notched)

F.

Crankshaft key

Camshaft dowel pin

: At cylinder head upper face side in each bank.

Crankshaft key

: At cylinder head side of right bank.

JPBIA0066ZZ

JPBIA0094ZZ

EM-56

< ON-VEHICLE REPAIR >

TIMING CHAIN

a.

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

b.

Install timing chains (secondary) and camshaft sprockets.

• Align the mating marks on timing chain (secondary) (orange

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

camshaft sprockets (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 camshafts with the groove or dowel hole on sprockets, and install them.
• On the intake side, align dowel pin on camshaft front end with pin groove on the back side of camshaft

sprocket, and install them.

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

• Make sure the mating marks (punched) (D) on each camshaft

sprocket are positioned on the mating marks (orange link) (C)
on timing chain (secondary).

NOTE:
Mating mark (punched) in the figure is for checking loose at
this step.

JPBIA0095ZZ

A

:  Camshaft  sprocket (INT) back face

B

: Orange link

C

: Dowel groove or hole

D

: Mating mark (Oval)

E

: Mating mark (2 oval)

F

: Mating mark (Circle)

G

:  Camshaft  sprocket (EXH) back face

H

: Mating mark (2 circle)

I

: Timing chain (secondary)

Right bank

: Use circle type.

Left bank

: Use oval type.

A

:  Intake  side

B

: Exhaust side

JPBIA0113ZZ

JPBIA0114ZZ

TIMING CHAIN

EM-57

< ON-VEHICLE REPAIR >

C

D

E

F

G

H

I

J

K

L

M

A

EM

N

P

O

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 (2) out from timing chain tensioners (second-
ary) (1).

4.

Install timing chain (primary) as follows:

a.

Install crankshaft sprocket (1).

• Make sure the mating marks on crankshaft sprocket face the

front of the engine.

b.

Install timing chain (primary).

KBIA4379J

A

: Right bank

B

: Left bank

JPBIA0087ZZ

A

: Crankshaft side

B

: Engine front

C

: Mating mark (Front side)

JPBIA0273ZZ

EM-58

< ON-VEHICLE REPAIR >

TIMING CHAIN

• Install timing chain (primary) so the mating mark (punched) (B)

on camshaft sprocket (INT) (1) is aligned with the yellow link
(A) on timing chain, while the mating mark (notched) (C) on
crankshaft sprocket (2) is aligned with the orange link (D) one
on timing chain, as shown in the figure.

• When it is difficult to align mating marks of timing chain (pri-

mary) with each sprocket, gradually turn camshaft using
wrench on the hexagonal portion to align it with the mating
marks.

• During alignment, be careful to prevent dislocation of mating

mark alignments of timing chains (secondary).

5.

Install internal chain guide (1), slack guide (2) and timing chain
tensioner (primary).

CAUTION:

3

:  Water  pump

JPBIA0116ZZ

JPBIA0086ZZ