2008 NISSAN TEANA Service Manual

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Page 2001 of 5121

NISSAN TEANA 2008 Service Manual EM-126
< DISASSEMBLY AND ASSEMBLY >
CYLINDER BLOCK
If the calculated value exceeds the limit, select proper connecting rod bearing according to connecting rod
big end diameter and crankshaft pin jou

EM-126
< DISASSEMBLY AND ASSEMBLY >
CYLINDER BLOCK
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-130, "
ConnectingRodBearing".
Method of Using Plastigage
Remove oil and dust on crankshaft pin journal and the surfaces of each bearing completely.
Cut a 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 connecting rod bearing cap, and tighten connecting
rod bolts to the specified torque. Refer to EM-110, "
Disassembly and Assembly" for the tightening proce-
dure.
CAUTION:
Never rotate crankshaft.
Remove connecting rod bearing cap and bearings, and using the
scale on the 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 (3) to cylinder block (1) and main bearing
caps (2), and main bearing cap bolts with main bearing beam to
the specified torque. Refer to EM-110, "
Disassembly and Assem-
bly" for the tightening procedure.
Measure the inner diameter of main bearing with a bore gauge.
(Oil clearance) = (Main bearing inner diameter) – (Crankshaft main
journal diameter)
If the calculated value exceeds the limit, select proper main bear-
ing according to main bearing inner diameter and crankshaft main
journal diameter to obtain the specified bearing oil clearance.
Refer to EM-132, "
MainBearing".
Method of Using Plastigage
Remove engine oil and dust on crankshaft journal and the surfaces of each bearing completely.
Cut a plastigage slightly shorter than the bearing width, and place it in crankshaft axial direction, avoiding oil
holes.
Install main bearing to cylinder block and main bearing caps, and tighten main bearing cap bolts with main
bearing beam to the specified torque. Refer to EM-110, "
Disassembly and Assembly" for the tightening pro-
cedure.
CAUTION:
Never rotate crankshaft.
JPBIA0231ZZ
Standard and limit : Refer to EM-146, "MainBearing".
JPBIA0232ZZ

Page 2002 of 5121

NISSAN TEANA 2008 Service Manual CYLINDER BLOCK
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Remove main bearing caps and bearings, and using the scale on
the plastigage bag, measure the plastigage width.
NO

Page 2003 of 5121

NISSAN TEANA 2008 Service Manual EM-128
< DISASSEMBLY AND ASSEMBLY >
CYLINDER BLOCK
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 (

Page 2004 of 5121

NISSAN TEANA 2008 Service Manual HOW TO SELECT PISTON AND BEARING
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HOW TO SELECT PISTON AND BEARING
DescriptionINFOID:0000000003802296
*: For the service parts, the

HOW TO SELECT PISTON AND BEARING
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HOW TO SELECT PISTON AND BEARING
DescriptionINFOID:0000000003802296
*: For the service parts, the grade for fitting cannot be selected between piston pin and connecting rod. (Only “0” grade is available.) The
information at the shipment from the plant is described as a reference.
The identification grade stamped on each part is the grade for the dimension measured in new condition.
This grade cannot apply to reused parts.
For reused or repaired parts, measure the dimension accurately. Determine the grade by comparing the
measurement with the values of each selection table.
For details of the measurement method of each part, the reuse standards and the selection method of the
selective fitting parts, refer to the text.
PistonINFOID:0000000003802297
WHEN NEW CYLINDER BLOCK IS USED
Check the cylinder bore grade (“1”, “2” or “3”) on rear side of cylinder
block, and select piston of the same grade.
NOTE:
Piston is available with piston pin as a set for the service part. (Only
“0” grade piston pin is available.)
WHEN NEW CYLINDER BLOCK IS REUSED
1. Measure the cylinder bore inner diameter. Refer to EM-119, "Inspection".
2. Determine the bore grade by comparing the measurement with the values under the cylinder bore inner
diameter of the “PISTON SELECTION TABLE”.
Selection points Selection parts Selection items Selection methods
Between cylinder block and
crankshaftMain bearingMain bearing grade
(bearing thickness)Determined by match of cylin-
der block bearing housing
grade (inner diameter of hous-
ing) and crankshaft journal
grade (outer diameter of jour-
nal)
Between crankshaft and con-
necting rodConnecting rod bearingConnecting rod bearing grade
(bearing thickness)Combining service grades for
connecting rod big end diame-
ter and crankshaft pin outer di-
ameter determine connecting
rod bearing selection.
Between cylinder block and pis-
tonPiston and piston pin assembly
(Piston is available together
with piston pin as assembly.)Piston grade
(piston skirt diameter)Piston grade = cylinder bore
grade (inner diameter of bore)
Between piston and connecting
rod*———
SEM756G

Page 2005 of 5121

NISSAN TEANA 2008 Service Manual EM-130
< DISASSEMBLY AND ASSEMBLY >
HOW TO SELECT PISTON AND BEARING
VQ25DE
VQ35DE
3. Select piston of the same grade.
PISTON SELECTION TABLE
VQ25DE
Unit: mm (in)
VQ35DE
Unit: mm (in)
NOTE:
Pist

Page 2006 of 5121

NISSAN TEANA 2008 Service Manual HOW TO SELECT PISTON AND BEARING
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Check pin diameter grade (“0”, “1” or “2”) on front of crankshaft,
and select connect

HOW TO SELECT PISTON AND BEARING
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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 CONNECTING ROD AND CRANKSHAFT ARE REUSED
1. Measure the connecting rod big end diameter. Refer to EM-119, "Inspection".
2. Check that the connecting rod big end diameter is within the standard value.
3. Measure the crankshaft pin journal diameter. Refer to EM-119, "
Inspection".
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
VQ25DE
Unit: mm (in)
Unit: mm (in)
VQ35DE
Unit: mm (in)
Unit: mm (in)
CONNECTING ROD BEARING GRADE TABLE
UNDERSIZE BEARING USAGE GUIDE
When the specified connecting rod bearing oil clearance is not obtained with standard size connecting rod
bearings, use undersize (US) bearings.
A : Journal diameter grade No. 1
B : Journal diameter grade No. 2
C : Journal diameter grade No. 3
D : Journal diameter grade No. 4
E : Pin diameter grade No. 1
F : Pin diameter grade No. 2
G : Pin diameter grade No. 3
H : Pin diameter grade No. 4
I : Pin diameter grade No. 5
J : Pin diameter grade No. 6
K : Identification
JPBIA0269ZZ
Connecting rod big end diameter 48.000 - 48.013 (1.8898 - 1.8903)
Crankshaft Connecting rod bearing
Crankshaft pin journal diameter Grade (Mark) Dimension (Bearing thickness range) Bearing grade No. Color
44.968 - 44.974 (1.7704 - 1.7706) 0 1.500 - 1.503 (0.0591 - 0.0592) STD 0 Black
44.962 - 44.968 (1.7702 - 1.7704) 1 1.503 - 1.506 (0.0592 - 0.0593) STD 1 Brown
44.956 - 44.962 (1.7699 - 1.7702) 2 1.506 - 1.509 (0.0593 - 0.0594) STD 2 Green
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
Connecting rod bearing grade table : Refer to EM-147, "ConnectingRodBearing".

Page 2007 of 5121

NISSAN TEANA 2008 Service Manual EM-132
< DISASSEMBLY AND ASSEMBLY >
HOW TO SELECT PISTON AND BEARING
When using undersize (US) bearing, measure the connecting rod bearing inner diameter with bearing
installed, and grind crankshaft

Page 2008 of 5121

NISSAN TEANA 2008 Service Manual HOW TO SELECT PISTON AND BEARING
EM-133
< DISASSEMBLY AND ASSEMBLY >
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3. Correspond the measured dimension in “Crankshaft main journal diameter” column of “MAIN BE

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