Nissan Murano Z50 (2005 year). Manual - part 128

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-50, "FRONT TIMING CHAIN CASE"

 .

REMOVAL

1.

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

EM-107, "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-113, "CYLINDER BLOCK"

 .

3.

Drain engine oil. Refer to 

LU-8, "Changing Engine Oil"

 .

4.

Drain engine coolant from inside engine. Refer to 

EM-114, "DISASSEMBLY"

 .

5.

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

EM-18, "INTAKE MANIFOLD COLLEC-

TOR"

 .

6.

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

EM-47, "ROCKER COVER"

 .

7.

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

EM-29, "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 intake valve timing control covers.

●

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

●

Use the seal cutter [SST: KV10111100 (J37228)] to cut liquid
gasket 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-62

TIMING CHAIN

Revision: 2005 August

2005 Murano

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

c.

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

●

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

17. Remove front oil seal from front timing chain case using a suit-

able tool.

●

Use a 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-64

TIMING CHAIN

Revision: 2005 August

2005 Murano

a.

Remove lower mounting bolt.

b.

Loosen upper mounting bolt slowly, and then turn timing chain
tensioner (primary) on the mounting bolt so that plunger is fully
expanded.
NOTE:
Even if plunger is fully expanded, it is not dropped from the body
of timing chain tensioner (primary).

c.

Remove upper mounting bolt, and then remove timing chain ten-
sioner (primary).

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 (primary).

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:

a.

Attach a suitable stopper pin to the right and left timing chain
tensioners (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-79, "CAMSHAFT"

 . [Removing camshaft bracket (No. 1)

is required.]

PBIC3562E

PBIC2266E

PBIC2047E

TIMING CHAIN

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b.

Remove camshaft sprockets (INT and EXH) mounting bolts.

●

Secure the hexagonal portion of camshaft using a 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” as
shown in the figure).

22. Remove water pump. Refer to 

CO-22, "WATER PUMP"

 .

23. Remove rear timing chain case as follows:

a.

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

b.

Cut liquid gasket using the seal cutter [SST: KV10111100
(J37228)] and remove rear timing chain case.

KBIA1698J

PBIC1978E

PBIC2980E

SEM735G

EM-66

TIMING CHAIN

Revision: 2005 August

2005 Murano

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-79, "REMOVAL"

 .

b.

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

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

and rear timing chain cases, and opposite mating surfaces.

KBIA1307E

SBIA0496E

PBIC0788E

SEM737G

TIMING CHAIN

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●

Remove old liquid gasket from bolt hole and thread.

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

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

PBIC2084E

SEM926E

PBIC0282E

EM-68

TIMING CHAIN

Revision: 2005 August

2005 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-84,

"INSTALLATION"

 .

a.

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

b.

Install camshaft brackets (No. 1). Refer to 

EM-84, "INSTALLATION"

 .

2.

Install rear timing chain case as follows:

a.

Install  new O-rings onto cylinder block.

PBIC3493E

PBIC0788E

TIMING CHAIN

EM-69

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b.

Install new O-rings to cylinder head.

c.

Apply liquid gasket with the 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-70

TIMING CHAIN

Revision: 2005 August

2005 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

 : 12.7 N·m (1.3 kg-m, 9 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

EM-71

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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.

PBIC2981E

PBIC0891E

EM-72

TIMING CHAIN

Revision: 2005 August

2005 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 the engine.

b.

Install timing chain (primary).

KBIA1698J

SEM923G

SEM929E

TIMING CHAIN

EM-73

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●

Install timing chain (primary) so the mating mark (punched) on
camshaft sprocket (INT) is aligned with the pink link on timing
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).

PBIC3494E

PBIC2109E

EM-74

TIMING CHAIN

Revision: 2005 August

2005 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.

9.

Install the timing chain tensioner (primary) with the following procedure:

a.

Pull plunger stopper tab up (or turn lever downward) so as to
remove plunger stopper tab from the ratchet of plunger.

NOTE:
Plunger stopper tab and lever are synchronized.

b.

Push plunger into the inside of tensioner body.

c.

Hold plunger in the fully compressed position by engaging
plunger stopper tab with the tip of ratchet.

d.

To secure lever, insert stopper pin through hole of lever into ten-
sioner body hole.

●

The lever parts and the tab are synchronized. Therefore, the
plunger will be secured under this condition.

NOTE:
Figure shows the example of 1.2 mm (0.047 in) diameter thin screwdriver being used as the stopper pin.

e.

Install timing chain tensioner (primary).

●

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

f.

Pull out stopper pin after installing, and then release plunger.

10. Make sure again that the mating marks on each sprocket and each timing chain have not slipped out of

alignment.

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

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

●

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

PBIC2633E

PBIC3568E

PBIC3569E

PBIC2548E

TIMING CHAIN

EM-75

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●

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

●

Using a 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.

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

●

Apply a continuous bead of liquid gasket with the 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"

 .

14. Install front timing chain case as follows:

SEM715A

PBIC0790E

SEM744GA

EM-76

TIMING CHAIN

Revision: 2005 August

2005 Murano

a.

Apply a continuous bead of liquid gasket with the 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.

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.

15. Install intake valve timing control covers as follows:

a.

Install new seal rings in shaft grooves.

PBIC2658E

M8 bolts

: 1, 2

 : 28.4 N·m (2.9 kg-m, 21 ft-lb)

M6 bolts

: Except the above

 : 12.7 N·m (1.3 kg-m, 9 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