Nissan Pathfinder (2007 year). Manual - part 238

TIMING CHAIN

EM-61

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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-75, "CAMSHAFT"

 . [Removing camshaft bracket (No. 1)

is required.]

b.

Remove camshaft sprocket (INT and EXH) bolts.

●

Secure the hexagonal portion of camshaft using wrench to
loosen bolts.

CAUTION:

Do not loosen bolts with securing anything other than the
camshaft hexagonal portion or with tensioning the timing
chain.

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
timing 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). This is because plunger of timing
chain tensioner (secondary) moves during operation,
leading to coming off of fixed stopper pin. 

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).

28. Remove water pump. Refer to 

CO-19, "REMOVAL"

 .

PBIC2047E

KBIA1698J

PBIC1978E

PBIC2920E

EM-62

TIMING CHAIN

2007 Pathfinder

29. Remove rear timing chain case as follows:

a.

Loosen and remove bolts with power tool in reverse order as
shown.

b.

Cut liquid gasket using Tool and remove rear timing chain case.

CAUTION:

●

Do not remove plate metal cover of oil passage.

●

After removal, handle rear timing chain case carefully so
it does not tilt, cant, or warp under a load.

30. Remove O-rings from cylinder head and camshaft bracket

(No. 1).

31. Remove O-rings from cylinder block.

32. Remove timing chain tensioners (secondary) from cylinder head if necessary.

a.

Remove camshaft brackets (No. 1). Refer to 

EM-76, "REMOVAL"

 .

b.

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

Tool number

: KV10111100 (J-37228)

PBIC2921E

PBIC2922E

SBIA0496E

PBIC0788E

TIMING CHAIN

EM-63

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33. Use scraper to remove all traces of old liquid gasket from front

and rear timing chain cases, and opposite mating surfaces.

●

Remove old liquid gasket from bolt hole and thread.

34. Use scraper to remove all traces of liquid gasket from water

pump cover, chain tensioner cover and intake valve timing con-
trol covers.

INSPECTION AFTER REMOVAL
Timing Chain

Check for cracks and any excessive wear at link plates and roller
links of timing chain. Replace timing chain as necessary.

PBIC2910E

PBIC2084E

SEM926E

PBIC0282E

EM-64

TIMING CHAIN

2007 Pathfinder

INSTALLATION

NOTE:
The figure below 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. Refer to 

EM-64, "INSTALLATION"

.

a.

Install timing chain tensioners (secondary) with stopper pin attached and new O-ring.

b.

Install camshaft brackets (No. 1). Refer to 

EM-80, "INSTALLATION"

 .

2.

Install rear timing chain case as follows:

a.

Install new O-rings onto cylinder block.

1.

Internal chain guide

2.

Camshaft sprocket (intake)

3.

Mating mark (copper link)

4.

Mating mark (punched)

5.

Secondary timing chain tensioner

6.

Mating mark (yellow 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

WBIA0716E

PBIC0788E

TIMING CHAIN

EM-65

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b.

Install new O-rings to cylinder head and camshaft bracket
(No. 1).

c.

Apply liquid gasket using Tool to rear timing chain case back side as shown.

Use Genuine RTV Silicone Sealant or equivalent. Refer to 

GI-47, "Recommended Chemical Prod-

ucts and Sealants"

 .

CAUTION:

●

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

●

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

d.

Align rear timing chain case 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, cylinder head and camshaft
bracket (No. 1).

SBIA0496E

Tool number

: WS39930000 (

—

)

PBIC2924E

EM-66

TIMING CHAIN

2007 Pathfinder

e.

Tighten bolts in numerical order as shown.

●

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

f.

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

●

If liquid gasket protrudes, wipe it off immediately.

g.

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

●

If not within the standard, repeat the installation procedure.

3.

Install water pump with new O-rings. Refer to 

CO-21, "INSTALLATION"

 .

4.

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).

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.

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

Rear timing case bolt 
torque

: 12.7 N·m (1.3 kg-m, 9 ft-lb)

PBIC2921E

Standard

Rear timing chain case to lower cylinder block:

–0.24 to 0.14 mm (–0.0094 to 0.0055 in)

PBIC2925E

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

TIMING CHAIN

EM-67

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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).

●

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
camshaft sprocket, and install them.

●

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

●

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
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

2007 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.

●

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

KBIA1698J

PBIC2110E

SEM929E