Nissan Murano Z50 (2004 year). Manual — part 120
CYLINDER BLOCK
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Piston Selection Table
Unit: mm (in)
NOTE:
●
Piston is available together with piston pin as assembly.
●
Piston pin (piston pin hole) grade is provided only for the parts installed at the plant. For service parts, no
piston pin grades can be selected. (Only “0” grade is available.)
●
No second grade mark is available on piston.
HOW TO SELECT CONNECTING ROD BEARING
When New Connecting Rod and Crankshaft are Used
Check pin diameter grade (“0”, “1” or “2”) on front of crankshaft, and
select connecting rod bearing of the same grade.
NOTE:
There is no grading for connecting rod big end diameter.
When Crankshaft and Connecting Rod are Reused
1.
Measure the connecting rod big end diameter. Refer to
EM-129, "CONNECTING ROD BIG END DIAME-
.
2.
Make sure that the connecting rod big end diameter is within the standard value.
3.
Measure the crankshaft pin journal diameter. Refer to
EM-133, "CRANKSHAFT PIN JOURNAL DIAME-
.
4.
Determine the grade of crankshaft pin diameter grade by corresponding to the measured dimension in
“Crankshaft pin journal diameter” column of “Connecting Rod Bearing Selection Table”.
5.
Select connecting rod bearing of the same grade.
Connecting Rod Bearing Selection Table
Unit: mm (in)
Unit: mm (in)
Undersize Bearings Usage Guide
●
When the specified connecting rod bearing oil clearance is not obtained with standard size connecting rod
bearings, use undersize (US) bearings.
●
When using undersize (US) bearing, measure the connecting rod bearing inner diameter with bearing
installed, and grind crankshaft pin so that the connecting rod bearing oil clearance satisfies the standard.
Grade
1
2 (or no mark)
3
Cylinder bore inner diameter
95.500 - 95.510
(3.7598 - 3.7602)
95.510 - 95.520
(3.7602 - 3.7606)
95.520 - 95.530
(3.7606 - 3.7610)
Piston skirt diameter
95.480 - 95.490
(3.7590 - 3.7594)
95.490 - 95.500
(3.7594 - 3.7598)
95.500 - 95.510
(3.7598 - 3.7602)
SEM452G
Connecting rod big end diameter
55.000 - 55.013 (2.1654 - 2.1659)
Crankshaft
Connecting rod bearing
Crankshaft pin journal diameter
Grade (Mark)
Dimension (Bearing thickness range)
Bearing grade No.
Color
51.968 - 51.974 (2.0460 - 2.0462)
0
1.500 - 1.503 (0.0591 - 0.0592)
STD 0
Black
51.962 - 51.968 (2.0457 - 2.0460)
1
1.503 - 1.506 (0.0592 - 0.0593)
STD 1
Brown
51.956 - 51.962 (2.0455 - 2.0457)
2
1.506 - 1.509 (0.0593 - 0.0594)
STD 2
Green
EM-124
CYLINDER BLOCK
Revision: 2004 November
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CAUTION:
In grinding crankshaft pin to use undersize bearings, keep
the fillet R [1.5 mm (0.059 in)].
Bearing undersize table
Unit: mm (in)
HOW TO SELECT MAIN BEARING
When New Cylinder Block and Crankshaft are Used
1.
“Main Bearing Selection Table” rows correspond to bearing
housing grade on rear left side of cylinder block.
2.
“Main Bearing Selection Table” columns correspond to journal
diameter grade on front side of crankshaft.
3.
Select main bearing grade at the point where selected row and column meet in “Main Bearing Selection
Table”.
When Cylinder Block and Crankshaft are Reused
1.
Measure cylinder block main bearing housing inner diameter and crankshaft main journal diameter. Refer
to
EM-131, "MAIN BEARING HOUSING INNER DIAMETER"
and
EM-132, "CRANKSHAFT MAIN JOUR-
2.
Correspond the measured dimension in “Cylinder block main bearing housing inner diameter” row of
“Main Bearing Selection Table”.
3.
Correspond the measured dimension in “Crankshaft main journal diameter” column of “Main Bearing
Selection Table”.
4.
Select main bearing grade at the point where selected row and column meet in following selection table.
PBIC1908E
Size
Thickness
US 0.25 (0.0098)
1.626 - 1.634 (0.0640 - 0.0643)
SEM756G
SEM452G
CYLINDER BLOCK
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Main Bearing Selection Table
PBIC1981E
EM-126
CYLINDER BLOCK
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Main Bearing Grade Table (All Journals)
Undersize Bearing Usage Guide
●
When the specified main bearing oil clearance is not obtained with standard size main bearings, use
underside (US) bearing.
●
When using undersize (US) bearing, measure the main bearing inner diameter with bearing installed, and
grind main journal so that the main bearing oil clearance satisfies the standard.
CAUTION:
In grinding crankshaft main journal to use undersize bear-
ings, keep the fillet R [1.5 mm (0.059 in)].
Bearing undersize table
Unit: mm (in)
Grade number
Thickness
Unit: mm (in)
Width
Unit: mm (in)
Identification color
Remarks
0
2.000 - 2.003 (0.0787 - 0.0789)
19.9 - 20.1
(0.783 - 0.791)
Black
Grade and color are
the same for upper
and lower bearings.
1
2.003 - 2.006 (0.0789 - 0.0790)
Brown
2
2.006 - 2.009 (0.0790 - 0.0791)
Green
3
2.009 - 2.012 (0.0791 - 0.0792)
Yellow
4
2.012 - 2.015 (0.0792 - 0.0793)
Blue
5
2.015 - 2.018 (0.0793 - 0.0794)
Pink
6
2.018 - 2.021 (0.0794 - 0.0796)
Purple
7
2.021 - 2.024 (0.0796 - 0.0797)
White
01
UPP
2.003 - 2.006 (0.0789 - 0.0790)
Brown
Grade and color are
different for upper and
lower bearings.
LWR
2.000 - 2.003 (0.0787 - 0.0789)
Black
12
UPR
2.006 - 2.009 (0.0790 - 0.0791)
Green
LWR
2.003 - 2.006 (0.0789 - 0.0790)
Brown
23
UPR
2.009 - 2.012 (0.0791 - 0.0792)
Yellow
LWR
2.006 - 2.009 (0.0790 - 0.0791)
Green
34
UPR
2.012 - 2.015 (0.0792 - 0.0793)
Blue
LWR
2.009 - 2.012 (0.0791 - 0.0792)
Yellow
45
UPR
2.015 - 2.018 (0.0793 - 0.0794)
Pink
LWR
2.012 - 2.015 (0.0792 - 0.0793)
Blue
56
UPR
2.018 - 2.021 (0.0794 - 0.0796)
Purple
LWR
2.015 - 2.018 (0.0793 - 0.0794)
Pink
67
UPR
2.021 - 2.024 (0.0796 - 0.0797)
White
LWR
2.018 - 2.021 (0.0794 - 0.0796)
Purple
PBIC1908E
Size
Thickness
US 0.25 (0.0098)
2.132 - 2.140 (0.0839 - 0.0843)
CYLINDER BLOCK
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Inspection After Disassembly
ABS00A3V
CRANKSHAFT END PLAY
●
Measure the clearance between thrust bearings and crankshaft
arm when crankshaft is moved fully forward or backward with
dial indicator.
●
If the measured value exceeds the limit, replace thrust bearings,
and measure again. If it still exceeds the limit, replace crank-
shaft also.
CONNECTING ROD SIDE CLEARANCE
●
Measure the side clearance between connecting rod and crank-
shaft arm with feeler gauge.
●
If the measured value exceeds the limit, replace connecting rod,
and measure again. If it still exceeds the limit, replace crank-
shaft also.
PISTON TO PISTON PIN OIL CLEARANCE
Piston Pin Hole Diameter
Measure the inner diameter of piston pin hole with inside microme-
ter.
Piston Pin Outer Diameter
Measure the outer diameter of piston pin with micrometer.
Piston to Piston Pin Oil Clearance
(Piston to piston pin oil clearance) = (Piston pin hole diameter) – (Piston pin outer diameter)
●
If clearance is out of the standard, replace piston and piston pin assembly.
Standard
: 0.10 - 0.25 mm (0.0039 - 0.0098 in)
Limit
: 0.30 mm (0.0118 in)
EMQ0196D
Standard
: 0.20 - 0.35 mm (0.0079 - 0.0138 in)
Limit
: 0.40 mm (0.0157 in)
PBIC0815E
Standard
: 21.993 - 22.005 mm (0.8659 - 0.8663 in)
PBIC0116E
Standard
: 21.989 - 22.001 mm (0.8657 - 0.8662 in)
PBIC0117E
Standard
: 0.002 - 0.006 mm (0.0001 - 0.0002 in)
EM-128
CYLINDER BLOCK
Revision: 2004 November
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●
When replacing piston and piston pin assembly, refer to
EM-122, "HOW TO SELECT PISTON"
.
NOTE:
●
Piston is available together with piston pin as assembly.
●
Piston pin (piston pin hole) grade is provided only for the parts installed at the plant. For service parts,
no piston pin grades can be selected. (Only “0” grade is available.)
PISTON RING SIDE CLEARANCE
●
Measure side clearance of piston ring and piston ring groove
with feeler gauge.
●
If the measured value exceeds the limit, replace piston ring, and measure again. If it still exceeds the limit,
replace piston also.
PISTON RING END GAP
●
Make sure that the cylinder bore inner diameter is within the
specification. Refer to
EM-131, "Cylinder Bore Inner Diameter"
.
●
Lubricate with new engine oil to piston and piston ring, and then
insert piston ring until middle of cylinder with piston, and mea-
sure piston ring end gap with feeler gauge.
●
If the measured value exceeds the limit, replace piston ring, and measure again. If it still exceeds the limit,
re-bore cylinder and use oversize piston and piston rings.
Standard:
Top ring
: 0.045 - 0.080 mm (0.0018 - 0.0031 in)
2nd ring
: 0.030 - 0.070 mm (0.0012 - 0.0028 in)
Oil ring
: 0.065 - 0.135 mm (0.0026 - 0.0053 in)
Limit:
Top ring
: 0.11 mm (0.0043 in)
2nd ring
: 0.10 mm (0.0039 in)
SEM024AA
Standard:
Top ring
: 0.23 - 0.33 mm (0.0091 - 0.0130 in)
2nd ring
: 0.33 - 0.48 mm (0.0130 - 0.0189 in)
Oil ring
: 0.20 - 0.50 mm (0.0079 - 0.0197 in)
Limit:
Top ring
: 0.54 mm (0.0213 in)
2nd ring
: 0.80 mm (0.0315 in)
Oil ring
: 0.95 mm (0.0374 in)
PBIC0118E
CYLINDER BLOCK
EM-129
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CONNECTING ROD BEND AND TORSION
●
Check with connecting rod aligner.
●
If it exceeds the limit, replace connecting rod assembly.
CONNECTING ROD BIG END DIAMETER
●
Install connecting rod bearing cap without installing connecting
rod bearing, and tightening connecting rod bolts to the specified
torque. Refer to
for the tightening proce-
dure.
●
Measure the inner diameter of connecting rod big end with
inside micrometer.
●
If out of the standard, replace connecting rod assembly.
CONNECTING ROD BUSHING OIL CLEARANCE
Connecting Rod Bushing Inner Diameter
Measure the inner diameter of connecting rod bushing with inside
micrometer.
Bend:
Limit : 0.15 mm (0.0059 in) per 100 mm (3.94 in) length
Torsion:
Limit : 0.30 mm (0.0118 in) per 100 mm (3.94 in) length
PBIC2077E
Standard
: 55.000 - 55.013 mm (2.1654 - 2.1659 in)
PBIC1641E
Standard
: 22.000 - 22.012 mm (0.8661 - 0.8666 in)
PBIC0120E
EM-130
CYLINDER BLOCK
Revision: 2004 November
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Piston Pin Outer Diameter
Measure the outer diameter of piston pin with micrometer.
Connecting Rod Bushing Oil Clearance
(Connecting rod bushing oil clearance) = (Connecting rod bushing inner diameter) – (Piston pin outer diame-
ter)
●
If the calculated value exceeds the limit, replace connecting rod assembly and/or piston and piston pin
assembly.
●
If replacing piston and piston pin assembly, refer to
EM-122, "HOW TO SELECT PISTON"
●
If replacing connecting rod assembly, refer to
NECTING ROD BEARING OIL CLEARANCE"
to select the con-
necting rod bearing.
Factory installed parts grading:
●
Service parts apply only to grade “0”.
Unit: mm (in)
*: After installing in connecting rod
CYLINDER BLOCK DISTORTION
●
Using scraper, remove gasket on the cylinder block surface, and also remove engine oil, scale, carbon, or
other contamination.
CAUTION:
Be careful not to allow gasket flakes to enter engine oil or engine coolant passages.
Standard
: 21.989 - 22.001 mm (0.8657 - 0.8662 in)
PBIC0117E
Standard
: 0.005 - 0.017 mm (0.0002 - 0.0007 in)
Limit
: 0.030 mm (0.0012 in)
PBIC0809E
Grade
0
1
Connecting rod bushing
inner diameter *
22.000 - 22.006
(0.8661 - 0.8664)
22.006 - 22.012
(0.8664 - 0.8666)
Piston pin hole diameter
21.993 - 21.999
(0.8659 - 0.8661)
21.999 - 22. 005
(0.8661 - 0.8663)
Piston pin outer diameter
21.989 - 21.995
(0.8657- 0.8659)
21.995 - 22.001
(0.8659 - 0.8662)
PBIC0812E
CYLINDER BLOCK
EM-131
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Measure the distortion on the cylinder block upper face at some
different points in six directions with straightedge and feeler
gauge.
●
If it exceeds the limit, replace cylinder block.
MAIN BEARING HOUSING INNER DIAMETER
●
Install main bearing caps and main bearing beam without install-
ing main bearings, and tighten main bearing cap bolts to the
specified torque. Refer to
for the tighten-
ing procedure.
●
Measure the inner diameter of main bearing housing with bore
gauge.
●
If out of the standard, replace cylinder block and main bearing
caps as assembly.
NOTE:
Cylinder block cannot be replaced as a single part, because it is
machined together with main bearing caps.
PISTON TO CYLINDER BORE CLEARANCE
Cylinder Bore Inner Diameter
●
Using bore gauge, measure cylinder bore for wear, out-of-round
and taper at six different points on each cylinder. (“X” and “Y”
directions at “A”, “B” and “C”) (“Y” is in longitudinal direction of
engine)
●
If the measured value exceeds the limit, or if there are scratches
and/or seizure on the cylinder inner wall, hone or re-bore the
inner wall.
●
Oversize piston is provided. When using oversize piston, re-
bore cylinder so that the clearance of the piston-to-cylinder bore
satisfies the standard.
CAUTION:
When using oversize piston, use oversize pistons for all
cylinders with oversize piston rings.
Limit
: 0.1 mm (0.004 in)
SEM123C
Standard
: 63.993 - 64.017 mm (2.5194 - 2.5203 in)
PBIC1643E
Standard inner diameter:
95.500 - 95.530 mm (3.7598 - 3.7610 in)
Wear limit:
0.2 mm (0.008 in)
Out-of-round (Difference between “X” and “Y”):
0.015 mm (0.0006 in)
Taper limit (Difference between “A” and “C”):
0.01 mm (0.0004 in)
Oversize (OS)
: 0.2 mm (0.008 in)
PBIC0923E
SEM843E
EM-132
CYLINDER BLOCK
Revision: 2004 November
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Piston Skirt Diameter
Measure the outer diameter of piston skirt with micrometer.
Piston to Cylinder Bore Clearance
Calculate by piston skirt diameter and cylinder bore inner diameter (direction “Y”, position “B”).
(Clearance) = (Cylinder bore inner diameter) – (Piston skirt diameter).
●
If the calculated value exceeds the limit, replace piston and piston pin assembly. Refer to
Re-boring Cylinder Bore
1.
Cylinder bore size is determined by adding piston to cylinder bore clearance to piston skirt diameter.
2.
Install main bearing caps and main bearing beam, and tighten to the specified torque. Otherwise, cylinder
bores may be distorted in final assembly.
3.
Cut cylinder bores.
NOTE:
●
When any cylinder needs boring, all other cylinders must also be bored.
●
Do not cut too much out of cylinder bore at a time. Cut only 0.05 mm (0.0020 in) or so in diameter at a
time.
4.
Hone cylinders to obtain the specified piston to cylinder bore clearance.
5.
Measure finished cylinder bore for the out-of-round and taper.
NOTE:
Measurement should be done after cylinder bore cools down.
CRANKSHAFT MAIN JOURNAL DIAMETER
●
Measure the outer diameter of crankshaft main journals with micrometer.
●
If out of the standard, measure the main bearing oil clearance. Then use undersize bearing. Refer to
134, "MAIN BEARING OIL CLEARANCE"
Measure point
: Distance from the top 41.0 mm (1.614 in)
Standard
: 95.480 - 95.510 mm (3.7590 - 3.7602 in)
PBIC0125E
Standard
: 0.010 - 0.030 mm (0.0004 - 0.0012 in)
Limit
: 0.08 mm (0.0031 in)
Re-bored size calculation: D = A + B – C
where,
D: Bored diameter
A: Piston skirt diameter as measured
B: Piston to cylinder bore clearance (standard value)
C: Honing allowance 0.02 mm (0.0008 in)
Standard
: 59.951 - 59.975 mm (2.3603 - 2.3612 in) dia.
CYLINDER BLOCK
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CRANKSHAFT PIN JOURNAL DIAMETER
●
Measure the outer diameter of crankshaft pin journal with
micrometer.
●
If out of the standard, measure the connecting rod bearing oil
clearance. Then use undersize bearing. Refer to
"CONNECTING ROD BEARING OIL CLEARANCE"
.
CRANKSHAFT OUT-OF-ROUND AND TAPER
●
Measure the dimensions at four different points as shown in the
figure on each main journal and pin journal with micrometer.
●
Out-of-round is indicated by the difference in the dimensions
between “X” and “Y” at “A” and “B”.
●
Taper is indicated by the difference in the dimensions between
“A” and “B” at “X” and “Y”.
●
If the measured value exceeds the limit, correct or replace crankshaft.
●
If corrected, measure the bearing oil clearance of the corrected main journal and/or pin journal. Then
select the main bearing and/or connecting rod bearing. Refer to
EM-134, "MAIN BEARING OIL CLEAR-
and/or
EM-133, "CONNECTING ROD BEARING OIL CLEARANCE"
.
CRANKSHAFT RUNOUT
●
Place V-block on precise flat table, and support the journals on
the both end of crankshaft.
●
Place dial indicator straight up on the No. 3 journal.
●
While rotating crankshaft, read the movement of the pointer on
dial indicator. (Total indicator reading)
●
If it exceeds the limit, replace crankshaft.
CONNECTING ROD BEARING OIL CLEARANCE
Method by Calculation
●
Install connecting rod bearings to connecting rod and cap, and
tighten connecting rod bolts to the specified torque. Refer to
for the tightening procedure.
●
Measure the inner diameter of connecting rod bearing with
inside micrometer.
(Bearing oil clearance) = (Connecting rod bearing inner diameter) –
(Crankshaft pin journal diameter)
Standard
: 51.956 - 51.974 mm (2.0455 - 2.0462 in) dia.
PBIC0127E
Limit:
Out-of-round (Difference between “X” and “Y”)
: 0.002 mm (0.0001 in)
Taper (Difference between “A” and “B”)
: 0.002 mm (0.0001 in)
SBIA0535E
Standard
: Less than 0.05 mm (0.002 in)
Limit
: 0.10 mm (0.0039 in)
SEM346D
Standard
: 0.034 - 0.059 mm (0.0013 - 0.0023 in)
(actual clearance)
Limit
: 0.070 mm (0.0028 in)
PBIC1642E
EM-134
CYLINDER BLOCK
Revision: 2004 November
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●
If the calculated value exceeds the limit, select proper connecting rod bearing according to connecting rod
big end diameter and crankshaft pin journal diameter to obtain the specified bearing oil clearance. Refer
to
EM-123, "HOW TO SELECT CONNECTING ROD BEARING"
Method of Using Plastigage
●
Remove oil and dust on crankshaft pin journal and the surfaces of each bearing completely.
●
Cut plastigage slightly shorter than the bearing width, and place it in crankshaft axial direction, avoiding oil
holes.
●
Install connecting rod bearings to connecting rod and cap, and tighten connecting rod bolts to the speci-
fied torque. Refer to
for the tightening procedure.
CAUTION:
Do not rotate crankshaft.
●
Remove connecting rod bearing cap and bearing, and using
scale on plastigage bag, measure the plastigage width.
NOTE:
The procedure when the measured value exceeds the limit is
same as that described in the “Method by Calculation”.
MAIN BEARING OIL CLEARANCE
Method by Calculation
●
Install main bearings to cylinder block and main bearing caps,
and tighten main bearing cap bolts with main bearing beam to
the specified torque. Refer to
for the
tightening procedure.
●
Measure the inner diameter of main bearing with bore gauge.
(Bearing clearance) = (Main bearing inner diameter) – (Crankshaft
main journal diameter)
●
If the calculated value exceeds the limit, select proper main bearing according to main bearing inner diam-
eter and crankshaft main journal diameter to obtain the specified bearing oil clearance. Refer to
Method of Using Plastigage
●
Remove oil and dust on crankshaft main journal and the surfaces of each bearing completely.
●
Cut plastigage slightly shorter than the bearing width, and place it in crankshaft axial direction, avoiding oil
holes.
●
Install main bearings to cylinder block and main bearing caps, and tighten main bearing bolts with main
bearing beam to the specified torque. Refer to
for the tightening procedure.
CAUTION:
Do not rotate crankshaft.
PBIC1149E
Standard
: 0.035 - 0.045 mm (0.0014 - 0.0018 in)
(actual clearance)
Limit
: 0.065 mm (0.0026 in)
PBIC1644E
CYLINDER BLOCK
EM-135
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Remove main bearing caps and bearings, and using scale on
plastigage bag, measure the plastigage width.
NOTE:
The procedure when the measured value exceeds the limit is
same as that described in the “Method by Calculation”.
CRUSH HEIGHT OF MAIN BEARING
●
When main bearing cap is removed after being tightened to the
specified torque with main bearings installed, the tip end of bear-
ing must protrude. Refer to
for the tight-
ening procedure.
●
If the standard is not met, replace main bearings.
CRUSH HEIGHT OF CONNECTING ROD BEARING
●
When connecting rod bearing cap is removed after being tight-
ened to the specified torque with connecting rod bearings
installed, the tip end of bearing must protrude. Refer to
for the tightening procedure.
●
If the standard is not met, replace connecting rod bearings.
MAIN BEARING CAP BOLT OUTER DIAMETER
●
Measure the outer diameters (“d
1
”, “d
2
”) at two positions as
shown in the figure.
●
If reduction appears in “A” range, regard it as “d
2
”.
●
If it exceeds the limit (large difference in dimensions), replace
main bearing cap bolt with new one.
PBIC1149E
Standard
: There must be crush height.
SEM502G
Standard
: There must be crush height.
PBIC1646E
Limit (“d
1
” – “d
2
”)
: 0.11 mm (0.0051 in)
PBIC0911E
EM-136
CYLINDER BLOCK
Revision: 2004 November
2004 Murano
CONNECTING ROD BOLT OUTER DIAMETER
●
Measure the outer diameter “d” at position shown in the figure.
●
If the reduction appears in a position other than “d”, regard it as
“d”.
●
When “d” exceeds the limit (when it becomes thinner), replace
connecting rod bolt with new one.
DRIVE PLATE
●
Check drive plate and signal plate for deformation or cracks.
CAUTION:
●
Do not disassemble drive plate.
●
Do not place drive plate with signal plate facing down.
●
When handling signal plate, take care not to damage or
scratch it.
●
Handle signal plate in a manner that prevents it from
becoming magnetized.
●
If anything is found, replace drive plate.
OIL JET
●
Check nozzle for deformation and damage.
●
Blow compressed air from nozzle, and check for clogs.
●
If it is not satisfied, clean or replace oil jet.
OIL JET RELIEF VALVE
●
Using clean plastic stick, press check valve in oil jet relief valve.
Make sure that valve moves smoothly with proper reaction
force.
●
If it is not satisfied, replace oil jet relief valve.
Standard
: 7.90 - 8.00 mm (0.3110 - 0.3150 in)
Limit
: 7.75 mm (0.3051 in)
PBIC0912E
SEM760G
EMU0468D
SERVICE DATA AND SPECIFICATIONS (SDS)
EM-137
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SERVICE DATA AND SPECIFICATIONS (SDS)
PFP:00100
Standard and Limit
ABS00A3W
GENERAL SPECIFICATIONS
Cylinder arrangement
V-6
Displacement
cm
3
(cu in)
3,498 (213.45)
Bore and stroke
mm (in)
95.5 x 81.4 (3.76 x 3.205)
Valve arrangement
DOHC
Firing order
1-2-3-4-5-6
Number of piston rings
Compression
2
Oil
1
Number of main bearings
4
Compression ratio
10.3
Compression pressure
kPa (kg/cm
2
, psi)/300 rpm
Standard
1,275 (13.0, 185)
Minimum
981 (10.0, 142)
Differential limit between cylinders
98 (1.0, 14)
Cylinder number
Valve timing
(Intake valve timing control - “OFF”)
Unit: degree
a
b
c
d
e
f
240
238
- 6
64
8
52
SEM713A
PBIC0187E
EM-138
SERVICE DATA AND SPECIFICATIONS (SDS)
Revision: 2004 November
2004 Murano
DRIVE BELT
*: If belt tension gauge cannot be installed at check points shown, check drive belt tension at different location on the belt.
INTAKE MANIFOLD COLLECTOR, INTAKE MANIFOLD AND EXHAUST MANIFOLD
Unit: mm (in)
SPARK PLUG
Deflection adjustment
Unit: mm (in)
Tension adjustment*
Unit: N (kg, lb)
Used belt
New belt
Used belt
New belt
Limit
After adjustment
Limit
After adjustment
Alternator and
A/C compressor
7 (0.28)
4.2 - 4.6
(0.17 - 0.18)
3.7 - 4.1
(0.15 - 0.16)
294 (30, 66)
730 - 818
(74.5 - 83.5,
164 - 184)
838 - 926
(85.5 - 94.5,
188 - 208)
Power steering
oil pump
11 (0.43)
7.3 - 8
(0.29 - 0.30)
6.5 - 7.2
(0.26 - 0.28)
196 (20, 44)
495 - 583
(50.5 - 59.5,
111 - 131)
603 - 691
(61.5 - 70.5,
135.6 - 155.4)
Applied pushing
force
98 N (10 kg, 22 lb)
—
PBIC2449E
Items
Limit
Surface distortion
Intake manifold collector (lower)
0.1 (0.004)
Intake manifold
0.1 (0.004)
Exhaust manifold
0.3 (0.012)
Make
NGK
Standard type
PLFR5A-11
Hot type
PLFR4A-11
Cold type
PLFR6A-11
Gap (nominal)
1.1 mm (0.043 in)
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