Nissan Murano Z51 (2008 year). Manual — part 174
FUEL INJECTOR AND FUEL TUBE
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• Insert until you hear a “click” sound and actually feel the engagement.
• To avoid misidentification of engagement with a similar sound, be sure to perform the next step.
d.
Pull quick connector by hand holding position. Check it is completely engaged (connected) so that it does
not come out from fuel tube.
e.
Install quick connector cap (3) to quick connector.
• Install quick connector cap with arrow (A) on surface facing in
direction of quick connector (fuel feed hose side).
CAUTION:
If quick connector cap cannot be installed smoothly, quick
connector may have not been installed correctly. Check
connection again.
f.
Secure fuel feed hose to clamp of quick connector cap.
8.
Install in the reverse order of removal after this step.
Inspection
INFOID:0000000003304115
INSPECTION AFTER INSTALLATION
Check on Fuel Leakage
1.
Turn ignition switch “ON” (with the engine stopped). With fuel pressure applied to fuel piping, check there
are no fuel leakage at connection points.
NOTE:
Use mirrors for checking at points out of clear sight.
2.
Start the engine. With engine speed increased, check again that there are no fuel leakage at connection
points.
CAUTION:
Never touch the engine immediately after stopped, as the engine becomes extremely hot.
1
: Fuel feed hose
2
: Fuel tube
B
: Upper view
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IGNITION COIL, SPARK PLUG AND ROCKER COVER
IGNITION COIL, SPARK PLUG AND ROCKER COVER
Exploded View
INFOID:0000000003304120
Removal and Installation
INFOID:0000000003304121
REMOVAL
1.
Remove the following parts:
• Engine cover: Refer to
• Air cleaner cases (upper and lower) and air duct assembly: Refer to
.
• Intake manifold collector: Refer to
.
2.
Disconnect PCV hose from rocker cover.
1.
Ignition coil
2.
Spark plug
3.
PCV hose
4.
Clamp
5.
PCV valve
6.
O-ring
7.
Rocker cover (bank 1)
8.
PCV hose
9.
Rocker cover gasket (bank 1)
10.
O-ring
11.
Camshaft position sensor (PHASE)
(bank 1)
12. Oil filler cap
13.
Rocker cover (bank 2)
14.
Rocker cover gasket (bank 2)
15.
Camshaft position sensor (PHASE)
(bank 2)
16.
PCV hose
17.
Clamp
A.
To intake manifold collector
B.
Refer to
C.
Camshaft bracket side
D.
To air duct assembly
Refer to
for symbols in the figure.
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IGNITION COIL, SPARK PLUG AND ROCKER COVER
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3.
Remove camshaft position sensor (PHASE) (bank 1 and bank
2).
CAUTION:
• Handle carefully to avoid dropping and shocks.
• Never disassemble
• Never allow metal powder to adhere to magnetic part at
sensor tip.
• Never place sensors in a location where they are exposed
to magnetism.
4.
Remove PCV valve and O-ring from rocker cover, if necessary.
5.
Remove oil filler cap from rocker cover, if necessary.
6.
Remove ignition coil.
CAUTION:
Never shock ignition coil.
7.
Remove harness clips on the rocker cover.
8.
Loosen bolts in the reverse order shown in the figure.
9.
Remove rocker cover gasket from rocker cover.
10. Use scraper to remove all traces of liquid gasket from cylinder head and camshaft bracket (No. 1).
CAUTION:
Never scratch or damage the mating surface when cleaning off old liquid gasket.
INSTALLATION
A
: Keep off any magnetic materials
: Engine front
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IGNITION COIL, SPARK PLUG AND ROCKER COVER
1.
Apply liquid gasket to the position shown in the figure with the
following procedure:
Use Genuine RTV silicone sealant or equivalent. Refer to
17, "Recommended Chemical Products and Sealants"
.
a.
Refer to figure (E) to apply liquid gasket to joint part of camshaft
bracket (No. 1) (1) and cylinder head.
b.
Refer to figure (H) to apply liquid gasket in 90 degrees to figure.
2.
Install rocker cover gasket to rocker cover.
3.
Install rocker cover.
• Check if rocker cover gasket is not dropped from the installation groove of rocker cover.
4.
Tighten bolts in two steps separately in numerical order as
shown in the figure.
5.
Install in the reverse order of removal after this step.
A
: Liquid gasket application point
F
: View F
I
: End surface of camshaft bracket (No. 1)
b
: 4 mm (0.16 in)
c
:
φ
2.5 - 3.5 mm (0.098 - 0.138 in)
d
: 5 mm (0.20 in)
g
: 10 mm (0.39 in)
: Engine front
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: Engine front
1st step
: 1.96 N·m (0.20 kg-m, 17 in-lb)
2nd step
: 8.33 N·m (0.85 kg-m, 74 in-lb)
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TIMING CHAIN
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TIMING CHAIN
Exploded View
INFOID:0000000003685476
1.
Timing chain tensioner (secondary)
(bank 2)
2.
Internal chain guide
3.
Timing chain tensioner (secondary)
(bank 1)
4.
Oil temperature sensor
5.
Camshaft sprocket (EXH)
6.
O-ring
7.
Timing chain (secondary)
8.
Timing chain (primary)
9.
Camshaft sprocket (INT)
10. Slack guide
11. Timing chain tensioner (primary)
12.
Crankshaft sprocket
13. Rear timing chain case
14. Tension guide
15.
O-ring
16. O-ring
17. O-ring
18.
Front timing chain case
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TIMING CHAIN
Removal and Installation
INFOID:0000000003685475
REMOVAL
1.
Drain engine oil. Refer to
.
2.
Drain engine coolant from inside engine. Refer to
3.
Remove intake manifold collector. Refer to
4.
Remove rocker covers (bank 1 and bank 2). Refer to
5.
Remove oil pans (lower and upper) and oil strainer. Refer to
.
6.
Remove drive belt, idler pulleys and bracket. Refer to
EM-13, "Removal and Installation"
7.
Remove power steering oil pump with piping connected, and temporarily secure it to aside. Refer to
8.
Separate engine harness removing their brackets from front timing chain case.
9.
Remove valve timing control covers.
• Loosen mounting bolts in the reverse order as shown in the
figure.
CAUTION:
Shaft is internally jointed with camshaft sprocket (INT) cen-
ter hole. When removing, keep it horizontal until it is com-
pletely disconnected.
10. Obtain No. 1 cylinder at TDC of its compression stroke as follows:
a.
Rotate crankshaft pulley clockwise to align timing mark (grooved
line without color) (
) with timing indicator.
19.
Valve timing control cover gasket
(bank 1)
20. Valve timing control cover (bank 1) 21.
Intake valve timing control solenoid valve
(bank 1)
22. Seal ring
23. Water pump cover
24.
Front oil seal
25. Crankshaft pulley
26. Crankshaft pulley bolt
27.
Intake valve timing control solenoid valve
(bank 2)
28. Valve timing control cover (bank 2)
29.
Valve timing control cover gasket
(bank 2)
A.
B.
Refer to
for symbols in the figure.
A
: Bank 1
B
: Bank 2
C
: Dowel pin hole
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TIMING CHAIN
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b.
Check that intake and exhaust cam noses on No. 1 cylinder
(engine front side of bank 1) are located as shown in the figure.
• If not, turn crankshaft one revolution (360 degrees) and align
as shown in the figure.
11. Remove crankshaft pulley as follows:
a.
Fix crankshaft with the pulley holder (commercial service tool)
(A).
b.
Loosen crankshaft pulley bolt and locate bolt seating surface at
10 mm (0.39 in) from its original position.
CAUTION:
Never 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:
Never put suitable puller tab on crankshaft pulley periphery,
as this will damage internal damper.
12. Remove front timing chain case as follows:
a.
Loosen mounting bolts in the reverse order as shown in the fig-
ure.
: Engine front
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1
: Crankshaft pulley
PBIC3961E
SEM915E
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TIMING CHAIN
b.
Insert a suitable tool (A) into the notch at the top of front timing
chain case as shown in the figure.
c.
Pry off case by moving the tool as shown.
• Use the seal cutter [SST: KV10111100 (J-37228)] to cut liquid
gasket for removal.
CAUTION:
• Never use screwdrivers or something similar.
• After removal, handle front timing chain case carefully so
it does not tilt, cant, or warp under a load.
13. Remove water pump cover from front timing chain case.
• Use the seal cutter [SST: KV10111100 (J-37228)] to cut liquid gasket for removal.
14. 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.
15. Remove O-ring (1) from rear timing chain case.
16. Remove timing chain tensioner (primary) as follows:
a.
Remove lower mounting bolt (1).
b.
Loosen upper mounting bolt (2) slowly, and then turn timing
chain tensioner (primary) (3) on the mounting bolt so that
plunger (4) 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).
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EMQ0032D
A
: Bank 1
B
: Bank 2
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TIMING CHAIN
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17. Remove internal chain guide, tension guide and slack guide.
NOTE:
Tension guide can be removed after removing timing chain (pri-
mary).
18. Remove timing chain (primary) and crankshaft sprocket.
CAUTION:
After removing timing chain (primary), never turn crankshaft and camshaft separately, or valves
will strike the piston heads.
19. Remove timing chain (secondary) and camshaft sprockets as follows:
a.
Attach a suitable stopper pin (B) to the bank 1 (A) and bank 2
(C) timing chain tensioners (secondary) (1).
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
. [Removing camshaft bracket (No. 1)
is required.]
b.
Remove camshaft sprockets (INT and EXH) mounting bolts.
• Secure the hexagonal portion of camshaft using a wrench to
loosen mounting bolts.
CAUTION:
Never 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.
PBIC2266E
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TIMING CHAIN
• Insert 0.5 mm (0.020 in) thick metal or resin plate between tim-
ing chain and timing chain tensioner plunger (guide) (E).
Remove timing chain (secondary) (2) 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).
• Figure is shown as an example of bank 1.
• When handling camshaft sprocket (INT), be careful of the fol-
lowing caution:
CAUTION:
• Handle carefully to avoid any shock to camshaft
sprocket.
• Never disassemble. [Never loosen bolts (A) as shown in
the figure].
20. Remove timing chain tensioners (secondary) from cylinder head as follows, if necessary.
• Remove timing chain tensioners (secondary) with a stopper pin attached.
21. Use a scraper to remove all traces of old liquid gasket from front
timing chain case, and opposite mating surfaces.
• Remove old liquid gasket from bolt hole (B) and thread.
1
: Timing chain tensioner (secondary)
A
: Bank 1
B
: View B
C
: Stopper pin
D
: Plate
F
: Timing chain tensioner (body)
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PBIC2980E
SEM737G
A
: Remove sticking old liquid gasket
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TIMING CHAIN
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22. Use a scraper to remove all traces of old liquid gasket from
water pump cover.
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
• Install timing chain tensioners (secondary) with a stopper pin attached and new O-ring.
SEM926E
1.
Internal chain guide
2.
Camshaft sprocket (INT)
3.
Timing chain (secondary)
4.
Camshaft sprocket (EXH)
5.
Timing chain tensioner (primary)
6.
Slack guide
7.
Timing chain (primary)
8.
Crankshaft sprocket
9.
Water pump
10. Tension guide
11.
Timing chain tensioner (secondary)
12. Crankshaft key
A.
Mating mark
B.
Mating mark (pink link)
C.
Mating mark (punched)
D.
Mating mark (orange)
E.
Mating mark (notched)
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TIMING CHAIN
2.
Check that dowel pin (A) and crankshaft key (1) 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. Never misidentify (ignore big
dia. side).
3.
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.
a.
Push plunger of timing chain tensioner (secondary) and keep it
pressed in with stopper pin (A).
b.
Install timing chain (secondary) (1) and camshaft sprockets (INT
and EXH).
NOTE:
Figure shows bank 1 (rear view).
• Align the mating marks on timing chain (secondary) (orange
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 bank 1 and bank 2, respectively.
• Align dowel pin on camshafts with the groove or hole on sprockets, and install them.
Camshaft dowel pin
: At cylinder head upper face side in each bank
Crankshaft key
: At cylinder head side of bank 1
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A
: Camshaft sprocket (INT) back face
B
: Orange link
C
: Mating mark (Circle)
D
: Camshaft sprocket (EXH) back face
E
: Mating mark (2 circle on front face)
F
: Dowel pin groove
G
: Mating mark (2 ovals on front face)
H
: Mating mark (Oval)
I
: Dowel pin hole
Bank 1
: Use circle type.
Bank 2
: Use oval type.
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TIMING CHAIN
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• On the intake side, align dowel pin on the camshaft front end with dowel pin hole on the back side of
camshaft sprocket, and install them.
• On the exhaust side, align dowel pin on camshaft front end with dowel 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 eas-
ier, make a mating mark (A) on the top of sprocket teeth and
its extended line in advance with paint.
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 (B) out from timing chain tensioners (second-
ary) (1).
4.
Install tension guide.
5.
Install timing chain (primary) as follows:
a.
Install crankshaft sprocket (1).
• Check the mating marks on crankshaft sprocket face the front
of the engine.
b.
Install timing chain (primary).
B
: Mating mark (orange link)
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A
: Bank 1
C
: Bank 2
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A
: Crankshaft side
B
: Engine front
C
: Mating mark (front side)
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TIMING CHAIN
• Install timing chain (primary) so the mating mark (punched) (B)
on camshaft sprocket (INT) (1) is aligned with the pink link (A)
on timing chain, while the mating mark (notched) (C) on crank-
shaft sprocket (2) is aligned with the orange link (D) 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).
6.
Install internal chain guide (1) and slack guide (2).
CAUTION:
Never over tighten slack guide mounting bolt (2). It is nor-
mal for a gap (A) to exist under the bolt seat when mounting
bolt is tightened to specification.
3
: Water pump
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3
: Tension guide
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1
: Slack guide
3
: Cylinder block
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TIMING CHAIN
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7.
Install the timing chain tensioner (primary) with the following procedure:
a.
Pull plunger stopper tab (A) up (or turn lever downward) so as to
remove plunger stopper tab from the ratchet of plunger (D).
NOTE:
Plunger stopper tab and lever (C) 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 (E) through hole of lever into
tensioner body hole (B).
• 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) (1).
• 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 (A) after installing, and then release plunger.
8.
Check again that the mating marks on each sprocket and each timing chain have not slipped out of align-
ment.
9.
Install new O-rings (1) on rear timing chain case.
10. 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 figure.
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A
: Bank 1
B
: Bank 2
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A
: Oil seal lip
B
: Dust seal lip
: Engine inside
: Engine outside
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TIMING CHAIN
• 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.
• Check the garter spring is in position and seal lip is not
inverted.
11. Install water pump cover to front timing chain case.
• Apply a continuous bead of liquid gasket with the tube presser
(commercial service tool) to water pump cover (1) as shown in
the figure.
Use Genuine RTV Silicone Sealant or equivalent. Refer to
GI-17, "Recommended Chemical Products and Sealants"
.
12. Install front timing chain case as follows:
a.
Apply a continuous bead of liquid gasket with the tube presser
(commercial service tool) to front timing chain case back side as
shown in the figure.
Use Genuine RTV Silicone Sealant or equivalent. Refer to
GI-17, "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
a :
φ
2.3 - 3.3 mm (0.091 - 0.130 in)
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D
: Bolt hole
E
: Protrusion
f
:
φ
2.6 - 3.6 mm (0.102 - 0.142 in)
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