Nissan Pathfinder (2010 year). Manual — part 366

EM-56

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FRONT TIMING CHAIN CASE

• 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)].

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

inverted.

CAUTION:

• Be careful not to damage front timing chain case and

crankshaft.

• Press-fit straight and avoid causing burrs or tilting oil

seal.

3. Install water pump cover and chain tensioner cover to front timing chain case, if removed.

• 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-14, "Recommended Chemical Products and Sealants"

.

4. Install idler pulley, if removed.
5. Install front timing chain case as follows:
a. Apply a continuous bead of liquid gasket using Tool to front tim-

ing chain case back side as shown.

Use Genuine RTV Silicone Sealant or equivalent. Refer to

GI-14, "Recommended Chemical Products and Sealants"

.

PBIC2911E

Tool number

: WS39930000 (

—

)

PBIC2912E

Tool number

: WS39930000 ( — )

PBIC2913E

2010 Pathfinder

FRONT TIMING CHAIN CASE

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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.

e. After all bolts are tightened, retighten them to the specified

torque in numerical order as shown.

• There are four type of bolts.

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

2010 Pathfinder

EM-58

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[VQ40DE]

FRONT TIMING CHAIN CASE

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

shown.

7. 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-14, "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.

8. 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 in two steps.

Front oil pan bolt torque : 22.0 N·m (2.2 kg-m, 16 ft-lb)

PBIC2907E

Tool number

: WS39930000 (

—

)

SBIA0492E

PBIC2631E

PBIC0918E

2010 Pathfinder

FRONT TIMING CHAIN CASE

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c. Remove Tool.

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

smoothly.

10. Installation of the remaining components is in the reverse order of removal.

INSPECTION AFTER INSTALLATION

• Before starting the engine, check oil/fluid levels including engine coolant and engine oil. If the levels are

lower than required quantity, fill to the specified level. Refer to

MA-16, "For North America"

.

• Run engine to check for unusual noise and vibration.

NOTE:

If hydraulic pressure inside timing chain tensioner drops after removal and 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.

• Warm up engine thoroughly to make sure there is no leakage of fuel, exhaust gas, or any oil/fluids including

engine oil and engine coolant.

• Bleed air from passages in lines and hoses, such as in cooling system.

• After cooling down the engine, again check oil/fluid levels including engine oil and engine coolant. Refill to

specified level if necessary.

• Summary of the inspection items:

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

Step 1

: 44.1 N·m (4.5 kg-m, 33 ft-lb)

Step 2

: 84

°

- 90

°

degrees clockwise

Tool number

: — (J-48761)

WBIA0580E

Item

Before starting engine

Engine running

After engine stopped

Engine coolant

Level

Leakage

Level

Engine oil

Level

Leakage

Level

Other oils and fluids*

Level

Leakage

Level

Fuel

Leakage

Leakage

Leakage

Exhaust gas

—

Leakage

—

2010 Pathfinder

EM-60

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TIMING CHAIN

TIMING CHAIN

Exploded View

INFOID:0000000005260461

Removal and Installation

INFOID:0000000005260462

CAUTION:

• After removing timing chains, do not turn the crankshaft and camshaft separately, or the valves will

strike the pistons.

• When installing camshafts, chain tensioners, oil seals, or other sliding parts, lubricate contacting

surfaces with new engine oil.

• Apply new engine oil to bolt threads and seat surfaces when installing camshaft sprockets, camshaft

brackets, and crankshaft pulley.

REMOVAL

1. Remove front timing chain case. Refer to

EM-51, "Removal and Installation"

.

2. Remove timing chain tensioner (primary) as follows:

AWBIA0859GB

1.

Internal chain guide

2.

O-ring

3.

Timing chain tensioner (secondary) (RH)

4.

Camshaft sprocket (EXH)

5.

Timing chain (secondary)

6.

Timing chain (primary)

7.

Camshaft sprocket RH (INT)

8.

Camshaft sprocket LH (INT)

9.

Slack guide

10. Timing chain tensioner (primary)

11. Crankshaft sprocket

12.

Timing chain tensioner (secondary) (LH)

13. O-ring

14. Tension guide

2010 Pathfinder

TIMING CHAIN

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a. Loosen clip of timing chain tensioner (primary), and release

plunger stopper (1).

b. Insert plunger into tensioner body by pressing slack guide (2).
c. Keep slack guide pressed and hold plunger in by pushing stop-

per pin through the tensioner body hole and plunger groove (3).

d. Remove bolts and remove timing chain tensioner (primary).
3. Remove internal chain guide, tension guide and slack guide.

NOTE:

Tension guide can be removed after removing timing chain (pri-

mary).

4. Remove timing chain (primary).

CAUTION:

After removing timing chain (primary), do not turn crankshaft and camshaft separately, or valves

will strike the piston heads.

5. Remove crankshaft sprocket, if necessary.
6. Remove timing chain (secondary) and camshaft sprockets as follows:
a. Attach suitable stopper pin to the right and left timing chain ten-

sioners (secondary).

NOTE:

• Use approximately 0.5 mm (0.02 in) dia. hard metal pin as a

stopper pin.

• For removal of timing chain tensioner (secondary), refer to

EM-74

. [Removing camshaft bracket (No. 1) is required.]

PBIC2919E

PBIC2266E

PBIC2047E

2010 Pathfinder

EM-62

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[VQ40DE]

TIMING CHAIN

b. Remove camshaft sprocket (INT and EXH) bolts.

• Secure the hexagonal portion of camshaft using wrench to

loosen bolts.

CAUTION:

Do not loosen bolts by securing anything other than the

camshaft hexagonal portion.

c.

Remove timing chain (secondary) together with camshaft sprockets.

• Turn camshaft slightly to secure slackness of timing chain on timing chain tensioner (secondary) side.

• Insert 0.5 mm (0.020 in)-thick metal or resin plate between tim-

ing chain and timing chain tensioner plunger (guide). Remove

timing chain (secondary) together with camshaft sprockets

with timing chain loose from guide groove.

CAUTION:

Be careful of plunger coming off when removing timing

chain (secondary).

NOTE:

Camshaft sprocket (INT) is a one piece integrated design

sprockets for timing chain (primary) and for timing chain (sec-

ondary).

• When handling camshaft sprocket (INT), be careful of the fol-

lowing:

CAUTION:

• Handle carefully to avoid any shock to camshaft

sprocket.

• Do not disassemble. (Do not loosen bolts (A) as shown).

7. Remove timing chain tensioners (secondary) from cylinder head if necessary.
a. Remove camshaft brackets (No. 1). Refer to

EM-74, "Removal and Installation"

.

b. Remove timing chain tensioners (secondary) with stopper pin attached.

INSPECTION AFTER REMOVAL

Check for cracks and any excessive wear at link plates. Replace

chain if necessary.

• In the same way as for the LH bank, inspect the timing chain and

associated parts on the RH bank.

KBIA1698J

PBIC1978E

PBIC2920E

PBIC0282E

2010 Pathfinder

TIMING CHAIN

EM-63

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INSTALLATION

NOTE:

The figure above shows the relationship between the mating mark on each timing chain and that on the corre-

sponding sprocket, with the components installed.
1. Install timing chain tensioners (secondary) to cylinder head if removed.
a. Install timing chain tensioners (secondary) with stopper pin attached and new O-ring.
b. Install camshaft brackets (No. 1). Refer to

EM-74, "Removal and Installation"

.

2. Make sure that dowel pin hole, dowel pin of camshaft and crank-

shaft key are located as shown. (No. 1 cylinder at compression

TDC)

•

NOTE:

Though camshaft does not stop at the position as shown, 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).

WBIA0716E

1.

Internal chain guide

2.

Camshaft sprocket (intake)

3.

Mating mark (blue link)

4.

Mating mark (punched)

5.

Secondary timing chain tensioner

6.

Mating mark (copper link)

7.

Secondary timing chain

8.

Camshaft sprocket (exhaust)

9.

Tensioner guide

10. Water pump

11. Crankshaft sprocket

12. Mating mark (notched)

13. Primary timing chain

14. Slack guide

15. Primary timing chain tensioner

16. Mating mark (back side)

17. Crankshaft key

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

2010 Pathfinder