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In grinding crankshaft pin to
use undersize bearings, keep the
fillet R [1.5 mm (0.059 in)].
Bearing undersize t INFINITI FX35 2008 Service Manual
CYLINDER BLOCKEM-253
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In grinding crankshaft pin to
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fillet R [1.5 mm (0.059 in)].
Bearing undersize t](/manual-img/42/57017/w960_57017-2736.png)
CYLINDER BLOCKEM-253
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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 main bearing
housing grade on rear upper side between cylinder block banks.
2. “Main Bearing Selection Table” columns correspond to main journal diameter grade on front side of crankshaft.
3. Select main bearing grade at the point where select ed row and column meat in “Main Bearing Selection
Table”.
CAUTION:
Initial clearance for No. 1, 5 journal and No. 2, 3, 4 journal is different. Use two different selection
table for each part.
No. 1, 5 journal and No. 2, 3, 4 journal have the same signs but different measures. Do not con-
fuse.
4. Apply sign at crossing in above step 3 to “Main Bearing Grade Table”. NOTE:
“Main Bearing Grade Table” applies to all journals.
Service parts is available as a set of both upper and lower.
When Cylinder Block and Crankshaft are Reused:
1. Measure the cylinder block main bearing housing inner diameter and the crankshaft main journal diame-
ter. Refer to EM-256, "
Inspection After Disassembly" and EM-256, "Inspection After Disassembly".
PBIC2373E
Size Thickness
US 0.25 (0.0098) 1.626 - 1.634 (0.0640 - 0.0643)
PBIC2371E
PBIC2374E
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3A893A873A873A8F3A773A9D3AAF3A8A3A8C3A863A9D3AAF3A8B3A8C
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EM-254
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CYLINDER BLOCK
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. Follow step 3 and later in “When New Cylinder Block and Crankshaft are Used:”.
Main Bearing Selection Table (No. 1 and 5 Journal)
PBIC2375E
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3A893A873A873A8F3A773A9D3AAF3A8A3A8C3A863A9D3AAF3A8B3A8C
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CYLINDER BLOCKEM-255
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Main Bearing Selection Table (No. 2, 3 and 4 Journal)
Main Bearing Grade Table (All Journals)
Unit: mm (in)
PBIC2376E
Grade number Thickness Identification color Remarks
0 2.483 - 2.486 (0.0978 - 0.0979) Black
Grade and color are the same
for upper and lower bearings.
1 2.486 - 2.489 (0.0979 - 0.0980) Brown
2 2.489 - 2.492 (0.0980 - 0.0981) Green
3 2.492 - 2.495 (0.0981 - 0.0982) Yellow
4 2.495 - 2.498 (0.0982 - 0.0983) Blue
5 2.498 - 2.501 (0.0983 - 0.0985) Pink
6 2.501 - 2.504 (0.0985 - 0.0986) Purple
7 2.504 - 2.507 (0.0986 - 0.0987) White
8 2.507 - 2.510 (0.0987 - 0.0988) Red
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![INFINITI FX35 2008 Service Manual
EM-256
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CYLINDER BLOCK
Use Undersize Bearing Usage Guide
When the specified main bearing oil clearance is not obtained with standard size main bearings, use under-
si INFINITI FX35 2008 Service Manual
EM-256
< SERVICE INFORMATION >[VK45DE]
CYLINDER BLOCK
Use Undersize Bearing Usage Guide
When the specified main bearing oil clearance is not obtained with standard size main bearings, use under-
si](/manual-img/42/57017/w960_57017-2739.png)
EM-256
< SERVICE INFORMATION >[VK45DE]
CYLINDER BLOCK
Use Undersize Bearing Usage Guide
When the specified main bearing oil clearance is not obtained with standard size main bearings, use under-
side (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 jour nal to use undersize bearings,
keep the fillet R [1.5 mm (0.059 in)].
Bearing undersize table
Unit: mm (in)
Inspection After DisassemblyINFOID:0000000001325806
CRANKSHAFT END PLAY
Measure the clearance between thrust bearings and crankshaftarm 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 exc eeds the limit, replace crankshaft
also.
01 UPR 2.483 - 2.486 (0.0978 - 0.0979) Black
Grade and color are different
for upper and lower bearings.
LWR 2.486 - 2.489 (0.0979 - 0.0980) Brown
12 UPR 2.486 - 2.489 (0.0979 - 0.0980) Brown
LWR 2.489 - 2.492 (0.0980 - 0.0981) Green
23 UPR 2.489 - 2.492 (0.0980 - 0.0981) Green
LWR 2.492 - 2.495 (0.0981 - 0.0982) Yellow
34 UPR 2.492 - 2.495 (0.0981 - 0.0982) Yellow
LWR 2.495 - 2.498 (0.0982 - 0.0983) Blue
45 UPR 2.495 - 2.498 (0.0982 - 0.0983) Blue
LWR 2.498 - 2.501 (0.0983 - 0.0985) Pink
56 UPR 2.498 - 2.501 (0.0983 - 0.0985) Pink
LWR 2.501 - 2.504 (0.0985 - 0.0986) Purple
67 UPR 2.501 - 2.504 (0.0985 - 0.0986) Purple
LWR 2.504 - 2.507 (0.0986 - 0.0987) White
78 UPR 2.504 - 2.507 (0.0986 - 0.0987) White
LWR 2.507 - 2.510 (0.0987 - 0.0988) Red
PBIC2373E
Size Thickness
US 0.25 (0.0098) 2.618 - 2.626 (0.1031 - 0.1034)
Standard : 0.10 - 0.25 mm (0.0039 - 0.0098 in)
Limit : 0.30 mm (0.0118 in)
PBIC2377E
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![INFINITI FX35 2008 Service Manual
CYLINDER BLOCKEM-257
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CONNECTING ROD SIDE CLEARANCE
Measure the side clearance between connecting rod and crank-
shaft arm with feele INFINITI FX35 2008 Service Manual
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CONNECTING ROD SIDE CLEARANCE
Measure the side clearance between connecting rod and crank-
shaft arm with feele](/manual-img/42/57017/w960_57017-2740.png)
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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 crankshaft
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 pi n hole diameter) – (Piston pin outer diameter)
If the calculated value is out of the st andard, replace piston and piston pin assembly.
When replacing piston and piston pin assembly, refer to EM-250, "
How to Select Piston and Bearing".
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
Standard : 0.20 - 0.35 mm (0.0079 - 0.0138 in)
Limit : 0.40 mm (0.0157 in)
PBIC0115E
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)
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![INFINITI FX35 2008 Service Manual
EM-258
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CYLINDER BLOCK
Measure the side clearance of piston ring and piston ring groove
with feeler gauge.
If the measured value exceeds the limit, replace piston INFINITI FX35 2008 Service Manual
EM-258
< SERVICE INFORMATION >[VK45DE]
CYLINDER BLOCK
Measure the side clearance of piston ring and piston ring groove
with feeler gauge.
If the measured value exceeds the limit, replace piston](/manual-img/42/57017/w960_57017-2741.png)
EM-258
< SERVICE INFORMATION >[VK45DE]
CYLINDER BLOCK
Measure the 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 i nner diameter is within the speci-
fication. Refer to "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 measure
the 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.
CONNECTING ROD BEND AND TORSION
Check with connecting rod aligner.
If it exceeds the limit, replace connecting rod assembly. 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 : 0.1 mm (0.004 in)
SEM024AA
Standard:
Top ring : 0.22 - 0.32 mm (0.0087 - 0.0126 in)
2nd ring : 0.22 - 0.32 mm (0.0087 - 0.0126 in)
Oil ring : 0.20 - 0.50 mm (0.0079 - 0.0197 in)
Limit:
Top ring : 0.56 mm (0.0220 in)
2nd ring : 0.56 mm (0.0220 in)
Oil ring : 0.96 mm (0.0378 in)
PBIC0118E
Bend:Limit : 0.15 mm (0.0059 in) per 100 mm (3.94 in) length
To r s i o n : Limit : 0.30 mm (0.0118 in) per 100 mm (3.94 in) length
PBIC2077E
3AA93ABC3ACD3AC03ACA3AC03AC63AC53A913A773A893A873A873A8E3A773A983AC73AC93AC03AC3
3A893A873A873A8F3A773A9D3AAF3A8A3A8C3A863A9D3AAF3A8B3A8C
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CYLINDER BLOCKEM-259
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CONNECTING ROD BIG END DIAMETER
Install connecting rod bearing cap without installing connecting rod
bearing, a INFINITI FX35 2008 Service Manual
CYLINDER BLOCKEM-259
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CONNECTING ROD BIG END DIAMETER
Install connecting rod bearing cap without installing connecting rod
bearing, a](/manual-img/42/57017/w960_57017-2742.png)
CYLINDER BLOCKEM-259
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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 EM-242, "
Disassembly and Assembly" for the
tightening procedure.
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 Bush ing Inner Diameter
Measure the inner diameter of connecting rod bushing with inside
micrometer.
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 bus hing inner diameter) – (Piston pin outer diame-
ter)
If the calculated value exceeds the limit, replac e connecting rod assembly and/or piston and piston pin
assembly.
If replacing piston and piston pin assembly, refer to EM-250, "
How to Select Piston and Bearing".
Standard : 55.000 - 55.013 mm (2.1654 - 2.1659 in)
PBIC1641E
Standard : 22.000 - 22.012 mm (0.8661 - 0.8666 in)
PBIC0120E
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)
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![INFINITI FX35 2008 Service Manual
EM-260
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If replacing connecting rod assembly, refer to "CONNECTING
ROD BEARING OIL CLEARANCE" to select the connecting rod
bearing.
Factory installed p INFINITI FX35 2008 Service Manual
EM-260
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CYLINDER BLOCK
If replacing connecting rod assembly, refer to "CONNECTING
ROD BEARING OIL CLEARANCE" to select the connecting rod
bearing.
Factory installed p](/manual-img/42/57017/w960_57017-2743.png)
EM-260
< SERVICE INFORMATION >[VK45DE]
CYLINDER BLOCK
If replacing connecting rod assembly, refer to "CONNECTING
ROD BEARING OIL CLEARANCE" to select the connecting 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, orother contamination.
CAUTION:
Be careful not to allow gasket flakes to en ter engine oil or engine coolant passages.
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 without installing main bearings, and tighten main bearing cap bolts to the specified
torque. Refer to EM-242, "
Disassembly and Assembly" for the
tightening 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
PBIC2164E
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)
PBIC2372E
Limit : 0.1 mm (0.004 in)
SEM123C
Standard : 68.944 - 68.968 mm (2.7143 - 2.7153 in)
PBIC1643E
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3A893A873A873A8F3A773A9D3AAF3A8A3A8C3A863A9D3AAF3A8B3A8C