Nissan Pathfinder (2006 year). Instruction — part 240

TIMING CHAIN

EM-67

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2006 Pathfinder

a.

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

b.

Install timing chains (secondary) and camshaft sprockets (INT
and EXH).

●

Align the mating marks on timing chain (secondary) (copper
color link) with the ones on camshaft sprockets (INT and
EXH) (punched), and install them.

NOTE:

●

Mating marks for camshaft sprocket (INT) are on the back
side of camshaft sprocket (secondary).

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

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Align dowel pin and pin hole on camshafts with the groove
and dowel pin on sprockets, and install them.

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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
camshaft sprocket, and install them.

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

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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.

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Bolts for camshaft sprockets must be tightened in the next step. Tightening them by hand is enough to
prevent the dislocation of dowel pins.

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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.

SEM430G

Right bank

: Use circle type.

Left bank

: Use oval type.

PBIC2926E

PBIC2927E

EM-68

TIMING CHAIN

2006 Pathfinder

c.

After confirming the mating marks are aligned, tighten camshaft
sprocket bolts.

●

Secure camshaft using wrench at the hexagonal portion to
tighten 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.

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Make sure the mating marks on crankshaft sprocket face the
front of engine.

KBIA1698J

PBIC2110E

SEM929E

TIMING CHAIN

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b.

Install the primary timing chain.

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Water pump (G).

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Install primary timing chain so the mating mark punched (B)
on camshaft sprocket is aligned with the copper link (A) on the
timing chain, while the mating mark notched (E) on the crank-
shaft sprocket (D) is aligned with the yellow link (F) on the tim-
ing chain, as shown.

●

When it is difficult to align mating marks (A) with (B) and (E)
with (F) of the primary timing chain with each sprocket, gradu-
ally turn the camshaft using a wrench on the hexagonal por-
tion to align it with the mating marks.

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During alignment, be careful to prevent dislocation of mating
mark alignments of the secondary timing chains.

8.

Install internal chain guide, slack guide and timing chain ten-
sioner (primary).

WBIA0721E

PBIC2109E

EM-70

TIMING CHAIN

2006 Pathfinder

CAUTION:

Do not overtighten slack guide bolts. It is normal for a gap
to exist under the bolt seats when bolts are tightened to
specification.

●

When installing timing chain tensioner (primary), push in plunger and keep it pressed in with stopper
pin.

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

●

After installation, pull out stopper pin by pressing slack guide.

9.

Make sure again that the mating marks on camshaft sprockets and timing chain have not slipped out of
alignment.

10. Install new O-rings on rear timing chain case.

11. Install new front oil seal on front timing chain case.

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Apply new engine oil to both oil seal lip and dust seal lip.

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Install it so that each seal lip is oriented as shown.

PBIC2633E

PBIC2548E

SEM715A

TIMING CHAIN

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Press-fit oil seal until it becomes flush with front timing chain
case end face using suitable drift [outer diameter: 60 mm
(2.36 in)].

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Make sure the garter spring is in position and seal lip is not
inverted.

12. Install water pump cover and chain tensioner cover to front timing chain case.

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Apply a continuous bead of liquid gasket using Tool to front
timing chain case as shown.

Use Genuine RTV Silicone Sealant or equivalent. Refer to

GI-47, "Recommended Chemical Products and Sealants"

.

13. Install front timing chain case as follows:

a.

Apply a continuous bead of liquid gasket using Tool to front timing chain case back side as shown.

Use Genuine RTV Silicone Sealant or equivalent. Refer to

GI-47, "Recommended Chemical Products and Sealants"

.

PBIC2911E

Tool number

: WS39930000 (

—

)

PBIC2912E

Tool number

: WS39930000 (

—

)

PBIC2913E

EM-72

TIMING CHAIN

2006 Pathfinder

b.

Install new O-rings on rear timing chain case.

c.

Assemble front timing chain case as follows:

i.

Fit lower end of front timing chain case tightly onto top face of oil
pan (upper). From the fitting point, make entire front timing chain
case contact rear timing chain case completely.

ii.

Since front timing chain case is offset for difference of bolt holes,
tighten bolts temporarily while holding front timing chain case
from front and top as shown.

iii.

Same as the previous step, insert dowel pin while holding front
timing chain case from front and top completely.

d.

Tighten bolts to the specified torque in numerical order as
shown.

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There are four type of bolts. Refer to the following for locating
bolts.

e.

After all bolts tightened, retighten them to the specified torque in numerical order as shown.

PBIC2548E

PBIC1100E

PBIC2915E

Bolt position

Bolt diameter

1 - 5

: 10 mm (0.39 in)

6 – 25

: 6 mm (0.24 in)

Bolt position

Tightening specification

1 - 5

: 55.0 N·m (5.6 kg-m, 41 ft-lb)

6 – 25

: 12.7 N·m (1.3 kg-m, 9 ft-lb)

PBIC2908E

TIMING CHAIN

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14. Install two bolts in front of oil pan (upper) in numerical order as

shown.

15. Install right and left intake valve timing control covers as follows:

a.

Install new seal rings in shaft grooves.

b.

Apply a continuous bead of liquid gasket using Tool to intake
valve timing control covers as shown.

Use Genuine RTV Silicone Sealant or equivalent. Refer to

GI-47, "Recommended Chemical Products and Sealants"

.

c.

Install new collared O-rings in front timing chain case oil hole
(left and right sides).

d.

Being careful not to move seal ring from the installation groove, align dowel pins on front timing chain
case with the holes to install intake valve timing control covers.

e.

Tighten bolts in numerical order as shown.

16. Install crankshaft pulley as follows:

a.

Install crankshaft pulley, taking care not to damage front oil seal.

●

When press-fitting crankshaft pulley with plastic hammer, tap on its center portion (not circumference).

b.

Tighten crankshaft pulley bolt.

Front oil pan bolt torque

: 22.0 N·m (2.2 kg-m, 16 ft-lb)

PBIC2907E

Tool number

: WS39930000 (

—

)

SBIA0492E

PBIC2631E

PBIC0918E

Crankshaft bolt torque

: 44.1 N·m (4.5 kg-m, 33 ft-lb)

EM-74

TIMING CHAIN

2006 Pathfinder

c.

Put a paint mark on crankshaft pulley aligning with angle mark
on crankshaft pulley bolt. Then, further retighten bolt by 60

°

(equivalent to one graduation).

17. Rotate crankshaft pulley in normal direction (clockwise when viewed from front) to confirm it turns

smoothly.

18. Install oil pans (upper and lower). Refer to

EM-27, "Removal and Installation"

.

19. Install rocker covers (right and left banks). Refer to

EM-41, "Removal and Installation"

.

20. Installation of the remaining components is in the reverse order of removal after this step.

INSPECTION AFTER INSTALLATION
Inspection for Leaks

The following are procedures for checking fluid leaks, lubricant leaks and exhaust gases leaks.

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Before starting engine, check oil/fluid levels including engine coolant and engine oil. If less than required
quantity, fill to the specified level. Refer to

MA-11, "RECOMMENDED FLUIDS AND LUBRICANTS"

.

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Use procedure below to check for fuel leakage.

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Turn ignition switch “ON” (with engine stopped). With fuel pressure applied to fuel piping, check for fuel
leakage at connection points.

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Start engine. With engine speed increased, check again for fuel leakage at connection points.

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Run engine to check for unusual noise and vibration.

NOTE:
If hydraulic pressure inside timing chain tensioner drops after removal/installation, slack in the guide may
generate a pounding noise during and just after engine start. However, this is normal. Noise will stop after
hydraulic pressure rises.

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Warm up engine thoroughly to make sure there is no leakage of fuel, exhaust gases, or any oil/fluids
including engine oil and engine coolant.

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Bleed air from lines and hoses of applicable lines, such as in cooling system.

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After cooling down engine, again check oil/fluid levels including engine oil and engine coolant. Refill to the
specified level, if necessary.

Summary of the inspection items:

* Transmission/transaxle/CVT fluid, power steering fluid, brake fluid, etc.

PBIC2916E

Item

Before starting engine

Engine running

After engine stopped

Engine coolant

Level

Leakage

Level

Engine oil

Level

Leakage

Level

Other oils and fluid*

Level

Leakage

Level

Fuel

Leakage

Leakage

Leakage