Nissan Murano Z50 (2006 year). Manual — part 125
TIMING CHAIN
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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
.
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: 2006 August
2006 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
4.
Make sure that dowel pin hole, dowel pin and crankshaft key are
located as shown in the figure. (No. 1 cylinder at compres-
sionTDC)
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: 2006 August
2006 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
PBIC2110E
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: 2006 August
2006 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
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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: 2006 August
2006 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
TIMING CHAIN
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b.
Apply a continuous bead of liquid gasket with the tube presser
[SST: WS39930000 (
—
)] to intake valve timing control cov-
ers 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.
e.
Tighten mounting bolts in numerical order as shown in the fig-
ure.
16. Install crankshaft pulley as follows:
a.
Install crankshaft pulley, taking care not to damage front oil seal.
●
When press-fitting crankshaft pulley with a plastic hammer, tap on its center portion (not circumfer-
ence).
b.
Fix crankshaft with the pulley holder [SST: KV10109300 (
—
)].
c.
Tighten crankshaft pulley bolt.
d.
Place a paint mark (A) on crankshaft pulley (1) aligning with the
angle mark (B) on crankshaft pulley bolt (2). Tighten the bolt 90
degrees (angle tightening).
SBIA0492E
PBIC2631E
PBIC0918E
: 44.1 N·m (4.5 kg-m, 33 ft-lb)
PBIC4627J
EM-78
TIMING CHAIN
Revision: 2006 August
2006 Murano
17. Rotate crankshaft pulley in normal direction (clockwise when viewed from engine front) to confirm it turns
smoothly.
18. Install in the reverse order of removal after this step.
INSPECTION AFTER INSTALLATION
Inspection for Leaks
The following are procedures for checking fluids leak, lubricates leak and exhaust gases leak.
●
Before starting engine, check oil/fluid levels including engine coolant and engine oil. If less than required
quantity, fill to the specified level. Refer to
MA-10, "RECOMMENDED FLUIDS AND LUBRICANTS"
●
Use procedure below to check for fuel leakage.
–
Turn ignition switch “ON” (with engine stopped). With fuel pressure applied to fuel piping, check for fuel
leakage at connection points.
–
Start engine. With engine speed increased, check again for fuel leakage at connection points.
●
Run engine to check for unusual noise and vibration.
NOTE:
If hydraulic pressure inside timing chain tensioner drops after removal/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 gases, or any oil/fluids
including engine oil and engine coolant.
●
Bleed air from lines and hoses of applicable lines, such as in cooling system.
●
After cooling down engine, again check oil/fluid levels including engine oil and engine coolant. Refill to the
specified level, if necessary.
Summary of the inspection items:
*: Transmission/transaxle/CVT fluid, power steering fluid, brake fluid, etc.
Items
Before starting engine
Engine running
After engine stopped
Engine coolant
Level
Leakage
Level
Engine oil
Level
Leakage
Level
Other oils and fluid*
Level
Leakage
Level
Fuel
Leakage
Leakage
Leakage
Exhaust gases
—
Leakage
—
CAMSHAFT
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CAMSHAFT
PFP:13001
Removal and Installation
NBS0029N
REMOVAL
1.
Remove engine assembly from the vehicle, and separate front suspension member, transaxle and trans-
fer (AWD models) assembly from engine. Refer to
.
1.
Intake valve timing control solenoid
valve
2.
Gasket
3.
Camshaft bracket (No. 2 to No. 4)
4.
Seal washer
5.
Camshaft (EXH)
6.
Camshaft (INT)
7.
Camshaft bracket (No. 1)
8.
Dowel pin
9.
Valve lifter
10. O-ring
11.
Timing chain tensioner (Secondary)
12. Spring
13. Plunger
14.
Cylinder head (right bank)
15. Cylinder head (left bank)
16. O-ring
17.
Camshaft position sensor (PHASE)
(right bank)
18.
Camshaft position sensor (PHASE)
(left bank)
PBIC2306E
EM-80
CAMSHAFT
Revision: 2006 August
2006 Murano
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
3.
Remove front timing chain case, camshaft sprocket, timing chain and rear timing chain case. Refer to
.
4.
Remove camshaft position sensor (PHASE) (right and left
banks) from cylinder head back side.
CAUTION:
●
Handle carefully to avoid dropping and shocks.
●
Do not disassemble.
●
Do not allow metal powder to adhere to magnetic part at
sensor tip.
●
Do not place sensors in a location where they are
exposed to magnetism.
5.
Remove intake valve timing control solenoid valves.
●
Discard intake valve timing control solenoid valve gaskets and
use new gaskets for installation.
6.
Remove camshaft brackets.
●
Mark camshafts, camshaft brackets and bolts so they are placed in the same position and direction for
installation.
●
Equally loosen camshaft bracket bolts in several steps in
reverse order as shown in the figure.
7.
Remove camshafts.
8.
Remove valve lifters.
KBIA1046E
SEM443GA
PBIC2050E
CAMSHAFT
EM-81
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●
Identify installation positions, and store them without mixing them up.
9.
Remove chain tensioner (secondary) from cylinder head.
●
Remove timing chain tensioner (secondary) with its stopper
pin attached.
NOTE:
Stopper pin was attached when timing chain (secondary) was
removed.
INSPECTION AFTER REMOVAL
Camshaft Runout
1.
Put V-block on precise flat table, and support No. 2 and 4 jour-
nals of camshaft.
CAUTION:
Do not support journal No. 1 (on the side of camshaft
sprocket) because it has a different diameter from the other
three locations.
2.
Set a dial indicator vertically to No. 3 journal.
3.
Turn camshaft to one direction with hands, and measure the
camshaft runout on dial indicator. (Total indicator reading)
4.
If it exceeds the limit, replace camshaft.
Camshaft Cam Height
1.
Measure the camshaft cam height with a micrometer.
2.
If wear is beyond the limit, replace camshaft.
Camshaft Journal Oil Clearance
CAMSHAFT JOURNAL DIAMETER
●
Measure the outer diameter of camshaft journal with a microme-
ter.
SEM947G
Standard
: Less than 0.02 mm (0.001 in)
Limit
: 0.05 mm (0.002 in)
PBIC0929E
Standard cam height (intake and exhaust)
: 44.865 - 45.055 mm (1.7663 - 1.7738 in)
Cam wear limit
: 0.2 mm (0.008 in)
EMQ0072D
Standard:
No. 1
: 25.935 - 25.955 mm (1.0211 - 1.0218 in)
No. 2, 3, 4
: 23.445 - 23.465 mm (0.9230 - 0.9238 in)
PBIC0040E
EM-82
CAMSHAFT
Revision: 2006 August
2006 Murano
CAMSHAFT BRACKET INNER DIAMETER
●
Tighten camshaft bracket bolt with the specified torque. Refer to
for the tighten-
ing procedure.
●
Measure inner diameter “A” of camshaft bracket with a bore
gauge.
CAMSHAFT JOURNAL OIL CLEARANCE
●
(Oil clearance) = (Camshaft bracket inner diameter) – (Camshaft journal diameter).
●
If the calculated value exceeds the limit, replace either or both camshaft and cylinder head.
NOTE:
Camshaft brackets cannot be replaced as single part, because there are machined together with cylinder
head. Replace whole cylinder head assembly.
Camshaft End Play
●
Install a dial indicator in thrust direction on front end of camshaft.
Measure the end play of dial indicator when camshaft is moved
forward/backward (in direction to axis).
●
Measure the following parts if out of the limit.
–
Dimension “A” for camshaft No. 1 journal
–
Dimension “B” for cylinder head No. 1 journal bearing
●
Refer to the standards above, and then replace camshaft and/or
cylinder head.
Camshaft Sprocket Runout
1.
Put V-block on precise flat table, and support No. 2 and 4 journal of camshaft.
CAUTION:
Do not support journal No. 1 (on the side of camshaft sprocket) because it has a different diameter
from the other three locations.
Standard:
No. 1
: 26.000 - 26.021 mm (1.0236 - 1.0244 in)
No. 2, 3, 4
: 23.500 - 23.521 mm (0.9252 - 0.9260 in)
PBIC1645E
Standard:
No. 1
: 0.045 - 0.086 mm (0.0018 - 0.0034 in)
No. 2, 3, 4
: 0.035 - 0.076 mm (0.0014 - 0.0030 in)
Limit
: 0.15 mm (0.0059 in)
Standard
: 0.115 - 0.188 mm (0.0045 - 0.0074 in)
Limit
: 0.24 mm (0.0094 in)
SEM864E
Standard
: 27.500 - 27.548 mm (1.0827 - 1.0846 in)
Standard
: 27.360 - 27.385 mm (1.0772 - 1.0781 in)
KBIA2404J
CAMSHAFT
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2.
Measure the camshaft sprocket runout with a dial indicator.
(Total indicator reading)
●
If it exceeds the limit, replace camshaft sprocket.
Valve Lifter
Check if surface of valve lifter has any wear or cracks.
●
If anything above is found, replace valve lifter. Refer to
Valve Lifter Clearance
VALVE LIFTER OUTER DIAMETER
●
Measure the outer diameter at 1/2 height of valve lifter with a
micrometer since valve lifter is in barrel shape.
VALVE LIFTER HOLE DIAMETER
●
Measure the inner diameter of valve lifter hole of cylinder head
with an inside micrometer.
VALVE LIFTER CLEARANCE
●
(Valve lifter clearance) = (Valve lifter hole diameter) – (Valve lifter outer diameter)
Limit
: 0.15 mm (0.0059 in)
PBIC0930E
KBIA0182E
Standard
Intake
: 33.977 - 33.987 mm (1.3377 - 1.3381 in)
Exhaust
Identification (stamped) mark “R”
: 33.977 - 33.987 mm (1.3377 - 1.3381 in)
Identification (stamped) mark “V”
: 33.980 - 33.990 mm (1.3378 - 1.3382 in)
JEM798G
Standard (Intake and exhaust)
: 34.000 - 34.016 mm (1.3386 - 1.3392 in)
SEM867E
Standard
Intake
: 0.013 - 0.039 mm (0.0005 - 0.0015 in)
Exhaust
EM-84
CAMSHAFT
Revision: 2006 August
2006 Murano
●
If the calculated value is out of the standard, referring to each standard of valve lifter outer diameter and
valve lifter hole diameter, replace either or both valve lifter and cylinder head.
INSTALLATION
1.
Install timing chain tensioners (secondary) on both sides of cyl-
inder head.
●
Install timing chain tensioner with its stopper pin attached.
●
Install timing chain tensioner with sliding part facing down-
ward on right-side cylinder head, and with sliding part facing
upward on left-side cylinder head.
●
Install new O-rings as shown in the figure.
2.
Install valve lifters.
●
Install it in the original position.
3.
Install camshafts.
●
Install camshaft with dowel pin attached to its front end face
on the exhaust side.
●
Follow your identification marks made during removal, or fol-
low the identification marks that are present on new cam-
shafts for proper placement and direction.
Identification (stamped) mark “R”
: 0.013 - 0.039 mm (0.0005 - 0.0015 in)
Identification (stamped) mark “V”
: 0.010 - 0.036 mm (0.0004 - 0.0014 in)
SBIA0499E
KBIA1071E
Bank
INT/EXH
Dowel pin
Paint marks
ID mark
M1
M2
RH
INT
No
Pink
No
RE
EXH
Yes
No
Orange
RE
LH
INT
No
Pink
No
LH
EXH
Yes
No
Orange
LH
KBIA1009E
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