Nissan Murano Z50 (2004 year). Manual - part 116

TIMING CHAIN

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NOTE:

●

This section describes procedures for removal/installation front timing chain case and timing chain related
parts, and rear timing chain case, when oil pan (upper) needs to be removed/installed for engine overhaul,
etc.

●

To removal/installation front timing chain case, timing chain, and its related parts without removing  oil pan
(upper), refer to 

EM-49, "FRONT TIMING CHAIN CASE"

 .

REMOVAL

1.

Remove engine assembly from vehicle, and separate front suspension member and transaxle from
engine. Refer to 

EM-105, "ENGINE ASSEMBLY"

 .

2.

Install engine sub-attachment with engine stand shaft [SST: KV10117001 (

—

) and KV10106500 (

—

)] to right side of cylinder block, then lift engine, and mount it onto engine stand [SST: ST0501S000

(

—

)]. Refer to 

EM-110, "CYLINDER BLOCK"

 .

3.

Drain engine oil. Refer to 

LU-8, "Changing Engine Oil"

 .

4.

Drain engine coolant from inside engine. Refer to 

EM-111, "DISASSEMBLY"

 .

5.

Remove intake manifold collectors (upper and lower). Refer to 

EM-16, "INTAKE MANIFOLD COLLEC-

TOR"

 .

6.

Remove rocker covers (right and left banks). Refer to 

EM-46, "ROCKER COVER"

 .

7.

Remove oil pans (lower and upper) and oil strainer. Refer to 

EM-28, "OIL PAN AND OIL STRAINER"

 .

8.

Remove idler pulley and bracket.

9.

Separate engine harness removing their brackets from front timing chain case

10. Remove right and left intake valve timing control covers.

●

Loosen mounting bolts in reverse order as shown in the fig-
ure.

●

Use seal cutter [SST: KV10111100 (J37228)] to cut liquid gas-
ket for removal.

CAUTION:

Shaft is internally jointed with camshaft sprocket (INT) cen-
ter hole. When removing, keep it horizontal until it is com-
pletely disconnected.

11. Remove collared O-ring from front timing chain case oil hole (left

and right sides).

12. Obtain No. 1 cylinder at TDC of its compression stroke as follows:

1.

Timing chain tensioner (secondary)

2.

Internal chain guide

3.

Timing chain tensioner (secondary)

4.

Camshaft sprocket (EXH)

5.

Timing chain (secondary)

6.

Timing chain (primary)

7.

Camshaft sprocket (INT)

8.

Camshaft sprocket (EXH)

9.

Timing chain (secondary)

10. Camshaft sprocket (INT)

11. Slack guide

12.

Crankshaft sprocket

13. Timing chain tensioner (primary) 

14. Intake valve timing control cover

15.

Chain tensioner cover

16. Water hose clamp

17. Water pump cover

18.

Intake valve timing control cover

19. Front oil seal

20. Crankshaft pulley

21.

Idler pulley

22. Idler pulley bracket

23. Front timing chain case

24.

Rear timing chain case

25. Water drain plug (front)

26. Tension guide

27.

O-ring

PBIC0918E

PBIC2631E

EM-60

TIMING CHAIN

Revision: 2004 November

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a.

Rotate crankshaft pulley clockwise to align timing mark (grooved
line without color) with timing indicator.

b.

Make sure that intake and exhaust cam noses on No. 1 cylinder
(engine front side of right bank) are located as shown in the fig-
ure.

●

If not, turn crankshaft one revolution (360 degrees) and align
as shown in the figure.

13. Remove crankshaft pulley as follows:

a.

Fix crankshaft with pulley holder [SST].

b.

Loosen crankshaft pulley bolt and locate bolt seating surface at
10 mm (0.39 in) from its original position.

CAUTION:

Do not remove crankshaft pulley bolt as it will be used as a
supporting point for suitable puller.

c.

Place suitable puller tab on holes of crankshaft pulley, and pull
crankshaft pulley through.

CAUTION:

Do not put suitable puller tab on crankshaft pulley periph-
ery, as this will damage internal damper.

14. Remove front timing chain case as follows:

SEM918G

SEM418G

PBIC2679E

SEM915E

TIMING CHAIN

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a.

Loosen mounting bolts in reverse order as shown in the figure.

b.

Insert suitable tool into the notch at the top of front timing chain
case as shown (1).

c.

Pry off case by moving tool as shown (2).

●

Use seal cutter [SST: KV10111100 (J37228)] to cut liquid gas-
ket for removal. 

CAUTION:

●

Do not use screwdrivers or something similar.

●

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

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

16. Remove water pump cover and chain tensioner cover from front timing chain case. 

●

Use seal cutter [SST: KV10111100 (J37228)] to cut liquid gasket for removal. 

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

tool.

●

Use screwdriver for removal.

CAUTION:

Be careful not to damage front timing chain case.

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

SEM730G

SEM156F

PBIC2548E

EMQ0032D

EM-62

TIMING CHAIN

Revision: 2004 November

2004 Murano

a.

Pull lever down and release plunger stopper tab.

●

Plunger stopper tab can be pushed up to release (coaxial
structure with lever).

b.

Insert stopper pin into tensioner body hole to hold lever, and
keep tab released.

NOTE:
Allen wrench [2.5 mm (0.098 in)] is used for a stopper pin as an
example.

c.

Insert plunger into tensioner body by pressing slack guide.

d.

Keep slack guide pressed and hold it by pushing stopper pin
through the lever hole and body hole.

e.

Remove mounting bolts and remove timing chain tensioner (pri-
mary).

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

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

20. 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.

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

PBIC2107E

PBIC2108E

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-77, "CAMSHAFT"

 . [Removing camshaft bracket (No. 1)

is required.]

b.

Remove camshaft sprockets (INT and EXH) mounting bolts.

●

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

CAUTION:

Do not loosen mounting bolts with securing anything
other than the camshaft hexagonal portion or with ten-
sioning 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 two-for-one structure of sprockets
for timing chain (primary) and for timing chain (secondary).

●

When handling camshaft sprocket (INT), be careful of the fol-
lowing caution:

CAUTION:

●

Handle carefully to avoid any shock to camshaft
sprocket.

●

Do not disassemble. (Do not loosen bolts “A” and “B”
as shown in the figure).

22. Remove water pump. Refer to 

CO-22, "WATER PUMP"

 .

23. Remove rear timing chain case as follows:

PBIC2047E

KBIA1698J

PBIC1978E

SEM734G

EM-64

TIMING CHAIN

Revision: 2004 November

2004 Murano

a.

Loosen and remove mounting bolts in reverse order as shown in
the figure.

b.

Cut liquid gasket using seal cutter [SST: KV10111100 (J37228)]
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.

24. Remove O-rings from cylinder head.

25. Remove O-rings from cylinder block.

26. Remove timing chain tensioners (secondary) from cylinder head as follows, if necessary.

a.

Remove camshaft brackets (No. 1). Refer to 

EM-77, "REMOVAL"

 .

b.

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

SEM735G

KBIA1307E

SBIA0496E

PBIC0788E

TIMING CHAIN

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27. 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.

28. Use scraper to remove all traces of old 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.

SEM737G

PBIC2084E

SEM926E

PBIC0282E

EM-66

TIMING CHAIN

Revision: 2004 November

2004 Murano

INSTALLATION

NOTE:
The below figure 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 as follows if removed. Refer to 

EM-82,

"INSTALLATION"

 .

a.

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

b.

Install camshaft brackets (No. 1). Refer to 

EM-82, "INSTALLATION"

 .

2.

Install rear timing chain case as follows:

a.

Install  new O-rings onto cylinder block.

PBIC1792E

PBIC0788E

TIMING CHAIN

EM-67

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b.

Install new O-rings to cylinder head.

c.

Apply liquid gasket with tube presser [SST: WS39930000 (

—

)] to rear timing chain case back side as

shown in the figure.
Use Genuine RTV Silicone Sealant or equivalent. Refer to 

GI-47, "RECOMMENDED CHEMICAL

PRODUCTS 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 and water pump assembly 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 and cylinder head.

SBIA0496E

PBIC2680E

EM-68

TIMING CHAIN

Revision: 2004 November

2004 Murano

e.

Tighten mounting bolts in numerical order as shown in the fig-
ure.

●

There are two types of mounting bolt. Refer to the following
for locating bolts.

f.

After all bolts tightening, retighten them to the specified in
numerical order as shown in the figure.

●

If liquid gasket protrudes, wipe it off immediately.

g.

After installing rear timing chain case, check the surface height
difference between the following parts on the 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-22, "WATER PUMP"

 .

4.

Make sure that dowel pin hole, dowel pin and crankshaft key are
located as shown in the figure. (No. 1 cylinder at compression
TDC)

NOTE:
Though camshaft does not stop at the position as shown in the
figure, 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 chain (secondary) and camshaft sprockets (INT and EXH) 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

 : 11.7 - 13.7 N·m (1.2 - 1.4 kg-m, 9 - 10 ft-lb)

SEM735G

Standard

Rear timing chain case to cylinder block:

−

0.24 to 0.14 mm (

−

0.009 to 0.006 in)

SEM943G

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

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a.

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

b.

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

●

Align the mating marks on timing chain (secondary) (gold 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 mark, 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.

●

Mounting 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.

PBIC2049E

PBIC0891E

EM-70

TIMING CHAIN

Revision: 2004 November

2004 Murano

c.

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

●

Secure camshaft using wrench at the hexagonal portion to
tighten mounting 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.

b.

Install timing chain (primary).

KBIA1698J

SEM923G

SEM929E

TIMING CHAIN

EM-71

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●

Install timing chain (primary) so the mating mark (punched) on
camshaft sprocket (INT) is aligned with the yellow link on tim-
ing chain, while the mating mark (notched) on crankshaft
sprocket is aligned with the orange one on timing chain, as
shown in the figure.

●

When it is difficult to align mating marks of timing chain (pri-
mary) with each sprocket, gradually turn camshaft using
wrench on the hexagonal portion to align it with the mating
marks.

●

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

8.

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

PBIC2632E

PBIC2109E

EM-72

TIMING CHAIN

Revision: 2004 November

2004 Murano

CAUTION:

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

●

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

●

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

●

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

9.

Make sure again that the mating marks on each sprocket and each 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.

●

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

●

Install it so that each seal lip is oriented as shown in the fig-
ure. 

PBIC2633E

PBIC2108E

PBIC2548E

SEM715A

TIMING CHAIN

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●

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

●

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.

●

Apply a continuous bead of liquid gasket with tube presser
[SST: WS39930000 (

—

)] to front timing chain case as

shown in the figure.
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 with tube presser [SST:
WS39930000 (

—

)] to front timing chain case back side as

shown in the figure.
Use Genuine RTV Silicone Sealant or equivalent. Refer to

GI-47, "RECOMMENDED CHEMICAL PRODUCTS AND
SEALANTS"

 .

b.

Install front timing chain case as to fit its dowel pin hole together dowel pin on rear timing chain case.

PBIC0790E

SEM744GA

PBIC2658E

EM-74

TIMING CHAIN

Revision: 2004 November

2004 Murano

c.

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

●

There are two types of mounting bolt. Refer to the following
for locating bolts.

d.

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

CAUTION:

Be sure to wipe off any excessive liquid gasket leaking on surface mating with oil pan (upper).

e.

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

●

If not within the standard, repeat the installation procedure.

14. 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 with tube presser [SST:
WS39930000 (

—

)] to intake valve timing control covers as

shown in the figure.
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 rings from the installation grooves, align dowel pins on front timing chain
case with the holes to install intake valve timing control covers.

M8 bolts

: 1, 2

 : 25.5 - 31.3 N·m (2.6 - 3.2 kg-m, 19 - 23 ft-lb)

M6 bolts

: Except the above

 : 11.7 - 13.7 N·m (1.2 - 1.4 kg-m, 9 - 10 ft-lb)

Standard

Front timing chain case to rear timing chain case:

−

0.14 to 0.14 mm (

−

0.006 to 0.006 in)

SEM730G

SEM943G

SBIA0492E

PBIC2631E