Infiniti EX35. Manual - part 715

TIMING CHAIN

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c.

After confirming the matching 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).

• Check the matching marks on crankshaft sprocket face the

front of the engine.

b.

Install timing chain (primary).

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:  Bank  1

B

:  Bank  2

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A

: Matching mark (Front side)

: Engine front

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TIMING CHAIN

• Install timing chain (primary) so the matching mark (punched)

(B) on camshaft sprocket (INT) (1) is aligned with the yellow
link (A) on timing chain, while the matching 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 matching marks of timing chain (pri-

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

• During alignment, be careful to prevent dislocation of matching

mark alignments of timing chains (secondary).

5.

Install internal chain guide (1), slack guide (2).

CAUTION:

3

:  Water  pump

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TIMING CHAIN

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Never overtighten slack guide mounting bolts (2). It is nor-
mal for a gap (A) to exist under the bolt seats when mount-
ing bolts are tightened to the specification.

6.

Install the timing chain tensioner (primary) with the following procedure:

a.

Pull plunger stopper tab (A) up (or turn lever downward) so as to
remove plunger stopper tab from the ratchet of plunger (D).
NOTE:
Plunger stopper tab and lever (C) are synchronized.

b.

Push plunger into the inside of tensioner body.

c.

Hold plunger in the fully compressed position by engaging
plunger stopper tab with the tip of ratchet.

d.

To secure lever, insert stopper pin (E) through hole of lever into
tensioner body hole (B).
• The lever parts and the plunger stopper tab are synchronized.

Therefore, the plunger will be secured under this condition.

NOTE:
Figure shows the example of 1.2 mm (0.047 in) diameter thin screwdriver being used as the stopper pin.

e.

Install timing chain tensioner (primary) (1).
• Remove any dirt and foreign materials completely from the

back and the mounting surfaces of timing chain tensioner (pri-
mary).

f.

Pull out stopper pin (A) after installing, and then release plunger.

7.

Check again that the matching marks on sprockets and timing chain have not slipped out of alignment.

8.

Install new O-rings (1) on rear timing chain case.

9.

Install new front oil seal on front timing chain case.

1

: Slack guide

3

: Cylinder block

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:  Bank  1

B

:  Bank  2

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EM-62

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TIMING CHAIN

• Apply new engine oil to both oil seal lip (A) and dust seal lip

(B).

• Install it so that each seal lip is oriented as shown in the figure. 

• Using a suitable drift [outer diameter: 60 mm (2.36 in)] (A),

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

• Check the garter spring is in position and seal lip is not

inverted.

10. Install front timing chain case as follows:

• Check O-rings stay in place during installation to rear timing chain case.

a.

Apply a continuous bead of liquid gasket with the tube presser
(commercial service tool) to front timing chain case back side as
shown in the figure.

Use Genuine RTV Silicone Sealant or equivalent. Refer to

GI-15, "Recommended Chemical Products and Sealants"

.

: Engine inside

: Engine outside

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B

: Protrusion

c

: 

φ

3.4 - 4.4 mm (0.134 - 0.173 in)

d

: 

φ

2.6 - 3.6 mm (0.102 - 0.142 in)

e

: 4.0 - 5.6 mm (0.157 - 0.220 in)

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