Nissan Pathfinder (2006 year). Manual - part 239

TIMING CHAIN

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19. Remove O-rings from rear timing chain case.

20. Remove water pump cover and chain tensioner cover from front timing chain case, if necessary.

●

Cut liquid gasket for removal using Tool. 

21. Remove front oil seal from front timing chain case using suitable

tool.

CAUTION:

Be careful not to damage front timing chain case.

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

and rear timing chain cases and oil pan (upper), and liquid gas-
ket mating surfaces.

CAUTION:

Be careful not to allow gasket fragments to enter oil pan.

●

Remove old liquid gasket from bolt hole and thread.

PBIC2548E

PBIC2909E

PBIC2910E

PBIC2084E

EM-60

TIMING CHAIN

2006 Pathfinder

23. Use a scraper to remove all traces of old liquid gasket from

water pump cover, chain tensioner cover and intake valve timing
control covers.

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

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).

25. Remove internal chain guide, tension guide and slack guide.

NOTE:
Tension guide can be removed after removing timing chain (pri-
mary).

26. Remove timing chain (primary) and crankshaft sprocket.

CAUTION:

After removing timing chain (primary), do not turn crankshaft and camshaft separately, or valves
will strike the piston heads.

27. Remove timing chain (secondary) and camshaft sprockets as follows:

SEM926E

PBIC2919E

PBIC2266E

TIMING CHAIN

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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

2006 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

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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

2006 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

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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

2006 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