2006 INFINITI FX35 lock

EM-138
[VQ35DE]
CYLINDER BLOCK
Revision: 2006 December 2006 FX35/FX45
CAUTION:
In grinding crankshaft pin to use undersize bearings, keep
the fillet R [1.5 - 1.7 mm (0.059 - 0.067 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-145, "
MAIN BEARING HOUSING INNER DIAMETER" and EM-146, "CRANKSHAFT MAIN JOUR-
NAL DIAMETER" .
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 EM-139
[VQ35DE]
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Revision: 2006 December 2006 FX35/FX45
Main Bearing Selection Table
PBIC1981E

EM-140
[VQ35DE]
CYLINDER BLOCK
Revision: 2006 December 2006 FX35/FX45
Main Bearing Grade Table (All Journals)
Unit: mm (in)
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 - 1.7 mm (0.059 - 0.067 in)].
Bearing undersize table
Unit: mm (in)
Grade number Thickness Width 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 UPR 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 EM-141
[VQ35DE]
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Revision: 2006 December 2006 FX35/FX45
Inspection After DisassemblyNBS003H8
CRANKSHAFT END PLAY

Measure the clearance between thrust bearings and crankshaft
arm when crankshaft is moved fully forward or backward with a
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 a 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 an inside
micrometer.
Piston Pin Outer Diameter
Measure the outer diameter of piston pin with a micrometer.
Piston to Piston Pin Oil Clearance
(Piston to piston pin oil clearance) = (Piston pin hole diameter) – (Piston pin outer diameter)

If the calculated value 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 (0.008 - 0.014 in)
Limit : 0.40 mm (0.016 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-142
[VQ35DE]
CYLINDER BLOCK
Revision: 2006 December 2006 FX35/FX45

When replacing piston and piston pin assembly, refer to EM-136, "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 the side clearance of piston ring and piston ring groove
with a 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-145, "
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 the piston ring end gap with a 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 (0.002 - 0.003 in)
2nd ring : 0.030 - 0.070 mm (0.001 - 0.003 in)
Oil ring : 0.065 - 0.135 mm (0.003 - 0.005 in)
Limit:
Top ring : 0.11 mm (0.004 in)
2nd ring : 0.10 mm (0.004 in)
SEM024AA
Standard:
Top ring : 0.23 - 0.33 mm (0.009 - 0.013 in)
2nd ring : 0.33 - 0.48 mm (0.013 - 0.019 in)
Oil ring : 0.20 - 0.50 mm (0.008 - 0.020 in)
Limit:
Top ring : 0.54 mm (0.021 in)
2nd ring : 0.80 mm (0.031 in)
Oil ring : 0.95 mm (0.037 in)
PBIC0118E

CYLINDER BLOCK EM-143
[VQ35DE]
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Revision: 2006 December 2006 FX35/FX45
CONNECTING ROD BEND AND TORSION

Check with a 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 EM-129, "
ASSEMBLY" for the tightening proce-
dure.

Measure the inner diameter of connecting rod big end with an
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 an inside
micrometer. Bend:
Limit : 0.15 mm (0.006 in) per 100 mm (3.94 in) length
To r s i o n : Limit : 0.30 mm (0.012 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-144
[VQ35DE]
CYLINDER BLOCK
Revision: 2006 December 2006 FX35/FX45
Piston Pin Outer Diameter
Measure the outer diameter of piston pin with a 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-136, "HOW TO SELECT PISTON" .

If replacing connecting rod assembly, refer to EM-147, "CON-
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 a 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 .0 06
(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-145
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Revision: 2006 December 2006 FX35/FX45

Measure the distortion on the cylinder block upper face at some
different points in six directions with a straightedge and a 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 EM-129, "
ASSEMBLY" for the tighten-
ing procedure.

Measure the inner diameter of main bearing housing with a 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 a 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: 0.20 mm (0.0079 in)
Out-of-round (Difference between “X” and “Y”): Limit: 0.015 mm (0.0006 in)
Taper (Difference between “A” and “C”):
Limit: 0.010 mm (0.0004 in)
Oversize (OS) : 0.2 mm (0.008 in)
PBIC0923E
SEM843E