Nissan Murano Z51 (2008 year). Manual — part 172
SPARK PLUG
EM-17
< ON-VEHICLE MAINTENANCE >
C
D
E
F
G
H
I
J
K
L
M
A
EM
N
P
O
6.
Remove spark plug with a spark plug wrench (commercial ser-
vice tool).
INSTALLATION
Install in the reverse order of removal.
Inspection
INFOID:0000000003304097
INSPECTION AFTER REMOVAL
Use the standard type spark plug for normal condition.
CAUTION:
• Never drop or shock spark plug.
• Never use a wire brush for cleaning.
• If plug tip is covered with carbon, spark plug cleaner may be
used.
• Spark plug gap adjustment is not required between replace-
ment intervals.
• Measure spark plug gap. When it exceeds the limit, replace
spark plug even if it is within the specified replacement mile-
age. Refer to
.
a
: 14 mm (0.55 in)
JPBIA0030ZZ
Spark plug (Standard type)
: Refer to
Cleaner air pressure:
Less than 588 kPa (6 kg/cm
2
, 85
psi)
Cleaning time:
Less than 20 seconds
SMA773C
JPBIA0031ZZ
Revision: 2008 October
2009 Murano
EM-18
< ON-VEHICLE MAINTENANCE >
CAMSHAFT VALVE CLEARANCE
CAMSHAFT VALVE CLEARANCE
Inspection and Adjustment
INFOID:0000000003304098
INSPECTION
Perform inspection as follows after removal, installation or replacement of camshaft or valve-related parts, or if
there is unusual engine conditions regarding valve clearance.
In cases of removing/installing or replacing camshaft and valve-
related parts, or of unusual engine conditions due to changes in
valve clearance (found malfunctions during stating, idling or causing
noise), perform inspection as follows:
1.
Remove rocker covers (bank 1 and bank 2). Refer to
2.
Measure the valve clearance as follows:
a.
Set No. 1 cylinder at TDC of its compression stroke.
• Rotate crankshaft pulley clockwise to align timing mark
(grooved line without color) (
) with timing indicator.
• Check that intake and exhaust cam nose on No. 1 cylinder
(engine front side of bank 1) are located as shown in the fig-
ure.
• If not, turn crankshaft one revolution (360 degrees) and align
as shown in the figure.
b.
Use a feeler gauge, measure the clearance between valve lifter
and camshaft.
: Engine front
JPBIA0164ZZ
SEM727G
: Engine front
JPBIA0044ZZ
Valve clearance
: Refer to
.
SEM139D
Revision: 2008 October
2009 Murano
CAMSHAFT VALVE CLEARANCE
EM-19
< ON-VEHICLE MAINTENANCE >
C
D
E
F
G
H
I
J
K
L
M
A
EM
N
P
O
• By referring to the figure, measure the valve clearances at
locations marked “
×
” as shown in the table below (locations
indicated in the figure).
• No. 1 cylinder at compression TDC
c.
Rotate crankshaft by 240 degrees clockwise (when viewed from engine front) to align No. 3 cylinder at
TDC its compression stroke.
NOTE:
Mark a position 240 degrees (b) from a corner of the hexagonal
part of crankshaft pulley mounting bolt as shown in the figure.
Use the hexagonal part as a guide.
: Engine front
Measuring position [bank 1 (A)]
No. 1 CYL.
No. 3 CYL.
No. 5 CYL.
No. 1 cylinder at com-
pression TDC
EXH (C)
×
(B)
INT (D)
×
(E)
Measuring position [bank 2 (H)]
No. 2 CYL.
No. 4 CYL.
No. 6 CYL.
No. 1 cylinder at com-
pression TDC
INT (D)
×
(F)
EXH (C)
×
(G)
JPBIA0165ZZ
1
: Crankshaft pulley
A
: Paint mark
JPBIA0166ZZ
Revision: 2008 October
2009 Murano
EM-20
< ON-VEHICLE MAINTENANCE >
CAMSHAFT VALVE CLEARANCE
• By referring to the figure, measure the valve clearances at
locations marked “
×
” as shown in the table below (locations
indicated in the figure).
• No. 3 cylinder at compression TDC
d.
Rotate crankshaft by 240 degrees clockwise (when viewed from engine front) to align No. 5 cylinder at
TDC of compression stroke.
NOTE:
Mark a position 240 degrees (b) from a corner of the hexagonal
part of crankshaft pulley mounting bolt as shown in the figure.
Use the hexagonal part as a guide.
: Engine front
Measuring position [bank 1 (A)]
No. 1 CYL.
No. 3 CYL.
No. 5 CYL.
No. 3 cylinder at com-
pression TDC
EXH (C)
×
(B)
INT (D)
×
(E)
Measuring position [bank 2 (H)]
No. 2 CYL.
No. 4 CYL.
No. 6 CYL.
No. 3 cylinder at com-
pression TDC
INT (D)
×
(F)
EXH (C)
×
(G)
JPBIA0167ZZ
1
: Crankshaft pulley
A
: Paint mark
JPBIA0166ZZ
Revision: 2008 October
2009 Murano
CAMSHAFT VALVE CLEARANCE
EM-21
< ON-VEHICLE MAINTENANCE >
C
D
E
F
G
H
I
J
K
L
M
A
EM
N
P
O
• By referring to the figure, measure the valve clearances at
locations marked “
×
” as shown in the table below (locations
indicated in the figure).
• No. 5 cylinder at compression TDC
3.
Perform adjustment if the measured value is out of the standard. Refer to “ADJUSTMENT”.
ADJUSTMENT
• Perform adjustment depending on selected head thickness of valve lifter.
1.
Measure the valve clearance. Refer to “INSPECTION”.
2.
Remove camshaft. Refer to
3.
Remove valve lifters at the locations that are out of the standard.
4.
Measure the center thickness of the removed valve lifters with a
micrometer (A).
5.
Use the equation below to calculate valve lifter thickness for replacement.
: Engine front
Measuring position [bank 1 (A)]
No. 1 CYL.
No. 3 CYL.
No. 5 CYL.
No. 5 cylinder at
compression TDC
EXH (C)
×
(B)
INT (D)
×
(E)
Measuring position [bank 2 (H)]
No. 2 CYL.
No. 4 CYL.
No. 6 CYL.
No. 5 cylinder at
compression TDC
INT (D)
×
(F)
EXH (C)
×
(G)
JPBIA0168ZZ
JPBIA0169ZZ
Valve lifter thickness calculation:
t = t
1
+ (C
1
– C
2
)
t
= Valve lifter thickness to be replaced
t
1
= Removed valve lifter thickness
C
1
= Measured valve clearance
C
2
= Standard valve clearance:
Intake
: 0.30 mm (0.012 in)
Exhaust
: 0.33 mm (0.013 in)
Revision: 2008 October
2009 Murano
EM-22
< ON-VEHICLE MAINTENANCE >
CAMSHAFT VALVE CLEARANCE
• Thickness of new valve lifter can be identified by stamp marks
on the reverse side (inside the cylinder).
Stamp mark 788P indicates 7.88 mm (0.3102 in) in thickness.
Available thickness of valve lifter: 27 sizes with range 7.88 to 8.40 mm (0.3102 to 0.3307 in) in steps of
0.02 mm (0.0008 in) (when manufactured at factory). Refer to
6.
Install selected valve lifter.
7.
Install camshaft. Refer to
.
8.
Manually turn crankshaft pulley a few turns.
9.
Check that the valve clearances for cold engine are within the specifications by referring to the specified
values. Refer to
EM-18, "Inspection and Adjustment"
.
10. Install all removal parts in the reverse order of removal.
11. Warm up the engine, and check for unusual noise and vibration.
A
: Stamp
B
: Thickness of valve lifter
JPBIA0170ZZ
Revision: 2008 October
2009 Murano
COMPRESSION PRESSURE
EM-23
< ON-VEHICLE MAINTENANCE >
C
D
E
F
G
H
I
J
K
L
M
A
EM
N
P
O
COMPRESSION PRESSURE
Inspection
INFOID:0000000003304099
1.
Warm up engine thoroughly. Then, stop it.
2.
Release fuel pressure. Refer to
.
3.
Disconnect fuel pump fuse to avoid fuel injection during measurement. Refer to
4.
Remove engine cover. Refer to
.
5.
Remove ignition coil and spark plug from each cylinder. Refer to
6.
Connect engine tachometer (not required in use of CONSULT-III).
7.
Install compression gauge with an adapter (commercial service
tool) onto spark plug hole.
• Use the adapter whose picking up end inserted to spark plug
hole is smaller than 20 mm (0.79 in) in diameter. Otherwise, it
may be caught by cylinder head during removal.
8.
With accelerator pedal fully depressed, turn ignition switch to “START” for cranking. When the gauge
pointer stabilizes, read the compression pressure and the engine rpm. Perform these steps to check each
cylinder.
CAUTION:
Always use a fully charged battery to obtain the specified engine speed.
• If the engine speed is out of the specified range, check battery liquid for proper gravity. Check the
engine speed again with normal battery gravity.
• If compression pressure is below minimum value, check valve clearances and parts associated with
combustion chamber (valve, valve seat, piston, piston ring, cylinder bore, cylinder head, cylinder head
gasket). After the checking, measure compression pressure again.
• If some cylinder has low compression pressure, pour small amount of engine oil into the spark plug hole
of the cylinder to recheck it for compression.
- If the added engine oil improves the compression, piston rings may be worn out or damaged. Check pis-
ton rings and replace if necessary.
- If the compression pressure remains at low level despite the addition of engine oil, valves may be mal-
functioning. Check valves for damage. Replace valve or valve seat accordingly.
• If two adjacent cylinders have respectively low compression pressure and their compression remains
low even after the addition of engine oil, cylinder head gaskets are leaking. In such a case, replace cyl-
inder head gaskets.
9.
After inspection is completed, install removed parts.
PBIC0900E
a
: 20 mm (0.79 in)
JPBIA0171ZZ
Compression pressure
: Refer to
EM-141, "General Specification"
Revision: 2008 October
2009 Murano
EM-24
< ON-VEHICLE MAINTENANCE >
COMPRESSION PRESSURE
10. Start the engine, and check that the engine runs smoothly.
11. Perform trouble diagnosis. If DTC appears, erase it. Refer to
Revision: 2008 October
2009 Murano
ENGINE COVER
EM-25
< ON-VEHICLE REPAIR >
C
D
E
F
G
H
I
J
K
L
M
A
EM
N
P
O
ON-VEHICLE REPAIR
ENGINE COVER
Exploded View
INFOID:0000000003304131
Removal and Installation
INFOID:0000000003304132
REMOVAL
1.
Remove radiator core support covers (RH and LH) and air duct (inlet). Refer to
.
2.
Remove engine cover mounting bolts (A) and (B).
3.
Draw and pull out engine cover from engine cover mounting bolts (C) and (D).
CAUTION:
Pull engine cover from mounting bolt (D) holding with hand the position (E) as shown in the figure.
4.
Remove engine cover mounting bolts (C) and (D) if necessary.
INSTALLATION
Install in the reverse order of removal.
1.
Engine cover
Refer to
JPBIA1712GB
JPBIA1718ZZ
Revision: 2008 October
2009 Murano
EM-26
< ON-VEHICLE REPAIR >
DRIVE BELT AUTO TENSIONER AND IDLER PULLEY
DRIVE BELT AUTO TENSIONER AND IDLER PULLEY
Exploded View
INFOID:0000000003304100
Removal and Installation
INFOID:0000000003304101
Removal
1.
Remove drive belt. Refer to
EM-13, "Removal and Installation"
.
• Keep auto-tensioner pulley arm locked after drive belt is removed.
2.
Remove auto-tensioner and idler pulley.
• Keep auto-tensioner pulley arm locked to install or remove auto-tensioner.
Installation
Install in the reverse order of removal.
CAUTION:
If there is damage greater than peeled paint, replace drive belt auto-tensioner.
1.
Drive belt auto-tensioner
2.
Idler pulley
3.
Idler pulley
4.
Bracket
Refer to
for symbols in the figure.
JPBIA1626GB
Revision: 2008 October
2009 Murano
AIR CLEANER AND AIR DUCT
EM-27
< ON-VEHICLE REPAIR >
C
D
E
F
G
H
I
J
K
L
M
A
EM
N
P
O
AIR CLEANER AND AIR DUCT
Exploded View
INFOID:0000000003304102
Removal and Installation
INFOID:0000000003304133
REMOVAL
NOTE:
Mass air flow sensor is removable under the car-mounted condition.
1.
Remove radiator core support covers (RH and LH).
2.
Remove air duct (inlet).
3.
Disconnect harness connector from mass air flow sensor.
4.
Disconnect PCV hose.
5.
Remove air cleaner cases (upper and lower) with mass air flow sensor and air duct assembly disconnect-
ing their joints.
• Add mating marks if necessary for easier installation.
1.
Mass air flow sensor
2.
Air cleaner case (upper)
3.
Holder
4.
Air cleaner filter
5.
Clamp
6.
Air duct assembly
7.
Clamp
8.
PCV hose
9.
Air duct (inlet)
10. Grommet
11.
Collar
12. Radiator core support cover (RH)
13. Radiator core support cover (LH)
14. Grommet
15. Grommet
16. Bracket
17. Bracket
18. Collar
19. Grommet
20. Air cleaner case (lower)
A.
To electric throttle control actuator
B.
To rocker cover (bank 2)
Refer to
for symbols in the figure.
JPBIA1670GB
Revision: 2008 October
2009 Murano
EM-28
< ON-VEHICLE REPAIR >
AIR CLEANER AND AIR DUCT
6.
Remove mass air flow sensor from air cleaner case (upper), if necessary.
CAUTION:
Handle the mass air flow sensor with following cares.
• Never shock the mass air flow sensor.
• Never disassemble the mass air flow sensor.
• Never touch the sensor of the mass air flow sensor.
INSTALLATION
Note the following, and install in the reverse order of removal.
• Align marks. Attach each joint. Screw clamps firmly.
Inspection
INFOID:0000000003304104
INSPECTION AFTER REMOVAL
Inspect air duct assembly for crack or tear.
• If anything found, replace air duct assembly.
Revision: 2008 October
2009 Murano
INTAKE MANIFOLD COLLECTOR
EM-29
< ON-VEHICLE REPAIR >
C
D
E
F
G
H
I
J
K
L
M
A
EM
N
P
O
INTAKE MANIFOLD COLLECTOR
Exploded View
INFOID:0000000003304105
Removal and Installation
INFOID:0000000003304134
REMOVAL
WARNING:
1.
Vacuum hose
2.
Clamp
3.
Clamp
4.
PCV hose
5.
Intake manifold collector
6.
Gasket
7.
Vacuum hose
8.
Bracket
9.
Electronic controlled engine mount
control solenoid valve
10. Vacuum hose
11.
Vacuum hose
12. Vacuum hose
13. Vacuum gallery
14. Vacuum hose
15. Vacuum hose
16. VIAS control solenoid valve 2
17. VIAS control solenoid valve 1
18.
EVAP canister purge control solenoid
valve
19. Clamp
20. EVAP hose
21. Service port
22. Bracket
23. EVAP hose
24. EVAP hose
25. EVAP pipe
26. EVAP hose
27. Clamp
28. Water hose
29. Water hose
30. Bracket
31. Electric throttle control actuator
32. Gasket
A.
To brake booster
B.
To rocker cover (bank 1)
C.
To vacuum tube
D.
To vacuum pipe
E.
To heater pipe
F.
To water outlet
: Engine front
for symbols in the figure.
JPBIA1713GB
Revision: 2008 October
2009 Murano
EM-30
< ON-VEHICLE REPAIR >
INTAKE MANIFOLD COLLECTOR
To avoid the danger of being scalded, never drain engine coolant when the engine is hot.
1.
Remove engine cover. Refer to
CAUTION:
Be careful not to damage or scratch engine cover.
2.
Remove air cleaner cases (upper and lower) with mass air flow sensor and air duct assembly. Refer to
3.
Drain engine coolant, or when water hoses are disconnected, attach plug to prevent engine coolant leak-
age. Refer to
CAUTION:
Perform this step when the engine is cold.
4.
Remove front wiper arm and extension cowl top. Refer to
5.
Disconnect water hoses from electric throttle control actuator.
• When engine coolant is not drained from radiator, attach plug to water hoses to prevent engine coolant
leakage.
6.
Remove electric throttle control actuator as follows:
a.
Disconnect harness connector.
b.
Loosen mounting bolts in the reverse order as shown in the fig-
ure.
CAUTION:
• Handle carefully to avoid any shock to electric throttle
control actuator.
• Never disassemble.
7.
Remove the following parts:
• Vacuum hose
• PCV hose
• High pressure piping from intake manifold: Refer to
.
• Electronic controlled engine mount control solenoid valve
8.
Disconnect EVAP hoses and harness connector from EVAP canister purge volume control solenoid valve.
9.
Remove EVAP canister purge volume control solenoid valve and bracket assembly.
10. Remove VIAS control solenoid valve mounting bolts and vacuum gallery mounting bolts, and then move
vacuum gallery.
• Add mating marks if necessary for easier installation.
11. Loosen mounting nuts and bolts in the reverse order as shown
in the figure, and remove intake manifold collector and gasket.
CAUTION:
Cover engine openings to avoid entry of foreign materials.
INSTALLATION
Note the following, and install in the reverse order of removal.
Intake Manifold Collector
JPBIA1631ZZ
: Engine front
JPBIA1628ZZ
Revision: 2008 October
2009 Murano
INTAKE MANIFOLD COLLECTOR
EM-31
< ON-VEHICLE REPAIR >
C
D
E
F
G
H
I
J
K
L
M
A
EM
N
P
O
Tighten mounting nuts and bolts in numerical order as shown in the
figure.
Electric Throttle Control Actuator
• Tighten mounting bolts in numerical order as shown in the figure.
• Perform the “Throttle Valve Closed Position Learning” when har-
ness connector of electric throttle control actuator is disconnected.
Refer to
EC-17, "THROTTLE VALVE CLOSED POSITION
.
• Perform the “Idle Air Volume Learning” and “Throttle Valve Closed
Position Learning” when electric throttle control actuator is
replaced. Refer to
EC-17, "IDLE AIR VOLUME LEARNING :
.
: Engine front
JPBIA1628ZZ
JPBIA1631ZZ
Revision: 2008 October
2009 Murano
EM-32
< ON-VEHICLE REPAIR >
INTAKE MANIFOLD
INTAKE MANIFOLD
Exploded View
INFOID:0000000003304107
Removal and Installation
INFOID:0000000003304135
REMOVAL
1.
Release fuel pressure. Refer to
.
2.
Remove intake manifold collector. Refer to
3.
Remove fuel tube and fuel injector assembly. Refer to
.
4.
Loosen mounting nuts and bolts in the reverse order as shown
in the figure to remove intake manifold with power tool.
5.
Remove gaskets.
CAUTION:
Cover engine openings to avoid entry of foreign materials.
INSTALLATION
Note the following, and install in the reverse order or removal.
Intake Manifold
• If stud bolts were removed, install them and tighten to the specified torque below.
1.
Intake manifold
2.
Gasket
A.
Refer to
Refer to
for symbols in the figure.
JPBIA1629GB
: Engine front
JPBIA1630ZZ
: 10.8 N·m (1.1 kg-m, 8 ft-lb)
Revision: 2008 October
2009 Murano
Нет комментариевНе стесняйтесь поделиться с нами вашим ценным мнением.
Текст