2006 INFINITI M35 Factory Service Manual

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INFINITI M35 2006 Factory Service Manual EM-130
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CYLINDER BLOCK
Revision: 2006 January2006 M35/M45
b. Install thrust bearings to the both sides of the No. 3 journal hous-
ing on cylinder block and main bearing cap.
Install thrust b

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8. Install main bearing cap bolts in numerical order as shown in the
figure as follows:
a. Inspect the out

Page 3195 of 5621

INFINITI M35 2006 Factory Service Manual EM-132
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CYLINDER BLOCK
Revision: 2006 January2006 M35/M45
If there is stamped mark on ring, mount it with marked side
up.
NOTE:
If there is no stamp on ring, no specific orientation is require

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13. Install connecting rod bearing cap.
Match the stamped cylinder number marks on connecting rod
with those

Page 3197 of 5621

INFINITI M35 2006 Factory Service Manual EM-134
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CYLINDER BLOCK
Revision: 2006 January2006 M35/M45
17. Install pilot converter.
With a drift [outer diameter: approx. 33 mm (1.30 in)], press-fit
as far as it will go.
Press-fit pilot

Page 3198 of 5621

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How to Select Piston and Bearing NBS004O2
DESCRIPTION
*: For the service parts, the grade for fitting canno

CYLINDER BLOCK
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How to Select Piston and Bearing NBS004O2
DESCRIPTION
*: 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.
HOW TO SELECT PISTON
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 Cylinder Block is Reused
1. Measure the cylinder bore inner diameter. Refer to EM-144, "Cylinder Bore inner Diameter" .
2. Determine the bore grade by comparing the measurement with
the values under the cylinder bore inner diameter of the “Piston
Selection Table”.
3. Select piston of the same grade.
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
diameter 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
PBIC0812E

Page 3199 of 5621

INFINITI M35 2006 Factory Service Manual EM-136
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CYLINDER BLOCK
Revision: 2006 January2006 M35/M45
Piston Selection Table
Unit: mm (in)
NOTE:
Piston is available together with piston pin as assembly.
Piston pin (piston pin hole) grad

EM-136
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CYLINDER BLOCK
Revision: 2006 January2006 M35/M45
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-142, "CONNECTING ROD BIG END DIAME-
TER" .
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-146, "
CRANKSHAFT PIN JOURNAL DIAME-
TER" .
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 diameter95.500 - 95.510
(3.7598 - 3.7602)95.510 - 95.520
(3.7602- 3.7606)95.520 - 95.530
(3.7606 - 3.7610)
Piston skirt diameter95.480 - 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

Page 3200 of 5621

INFINITI M35 2006 Factory Service Manual CYLINDER BLOCK
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Revision: 2006 January2006 M35/M45
CAUTION:
In grinding crankshaft pin to use undersize bearings, keep
the fillet R [1.5 - 1.7 mm (0.05

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