shaft INFINITI FX35 2004 Service Manual

CYLINDER BLOCK
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Revision: 2004 November 2004 FX35/FX45
14. Install connecting rod bearings to connecting rod and connect-
ing rod cap.

When installing connecting rod bearings, apply engine oil to
the bearing surface (inside). Do not apply engine oil to the
back surface, but thoroughly clean it.

When installing, align connecting rod bearing stopper protru-
sion with the cutout of connecting rod to install.

Check the oil hole on connecting rod and that on the corre-
sponding bearing are aligned.
15. Install piston and connecting rod assembly to crankshaft.

Position crankshaft pin corresponding to connecting rod to be
installed onto the bottom dead center.

Apply engine oil sufficiently to cylinder bore, piston and crank-
shaft pin.

Match cylinder position with the cylinder number on connect-
ing rod to install.

Using a piston ring compressor (SST) or suitable tool, install
piston with the front mark on the piston crown facing the front
of engine.
CAUTION:
Be careful not to damage cylinder wall and crankshaft pin, resulting from an interference of con-
necting rod big end.
16. Install connecting rod cap.

Match the stamped cylinder number marks on connecting rod
with those on cap to install.

Be sure that front mark on connecting rod cap is facing front
of engine.
17. Tighten connecting rod bolt as follows.
a. Apply engine oil to the threads and seats of connecting rod
bolts.
b. Tighten bolts.
c. Then tighten all bolts “90” degrees clockwise (Angle tightening).
CAUTION:
Always use an angle wrench [SST: KV10112100 (BT8653-
A)]. Avoid tightening based on visual check alone.

After tightening bolt, make sure that the crankshaft rotates
smoothly.

Check the connecting rod side clearance. Refer to EM-136, "CONNECTING ROD SIDE CLEARANCE"
18. Install baffle plate to main bearing beam.
PBIC0266E
SEM620
PBIC0809E
: 19.6 N·m (2.0 kg-m, 14 ft-lb)
SEM953E

EM-130
[VQ35DE]
CYLINDER BLOCK
Revision: 2004 November 2004 FX35/FX45
19. Install rear oil seal retainer to cylinder block.

Apply new engine oil to the oil and dust seal lips.

Apply liquid gasket to rear oil seal retainer using tube presser
[SST: WS39930000 ( - )] as shown in the figure.
Use Genuine RTV Silicone Sealant or equivalent. Refer to
GI-48, "
RECOMMENDED CHEMICAL PRODUCTS AND
SEALANTS" .
CAUTION:
Replace with the new parts.
NOTE:
Rear oil seal with rear oil seal retainer.
20. Install pilot converter using suitable tool.

Outer diameter of drift.

Press-fit pilot converter with its chamfer facing crankshaft as
shown in the figure.
21. Install drive plate.

Install drive plate and reinforcement plate as shown in figure.

Secure crankshaft using a ring gear stopper [SST:
KV1011770 (J44716)].

Tighten the installation bolts crosswise over several times.
PBIC0922E
Pilot converter : Approx. 33 mm (1.30 in)
PBIC0899E
SEM537E
PBIC0910E

CYLINDER BLOCK
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Revision: 2004 November 2004 FX35/FX45
22. Install knock sensor.

Install knock sensor so that connector faces front of engine.

After installing knock sensor, connect harness connector, and
lay it out to rear of engine.
CAUTION:

Do not tighten mounting bolts while holding connector.

If any impact by dropping is applied to knock sensor,
replace it with new one.
NOTE:

Make sure that there is no foreign material on the cylinder
block mating surface and the back surface of knock sensor.

Make sure that knock sensor does not interfere with other parts.
23. Install followings in reverse order of removal.
How to Select Piston and Bearing ABS00FPI
DESCRIPTION
*For the service parts, the grade for fitting cannot be selected between a piston pin and a 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 cylinder bore grade (“1”, “2”, or “3”) on rear side of cylinder
block, and select a 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.)
PBIC0810E
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 inner
diameter and crankshaft pin
outer diameter determine con-
necting rod bearing selection.
Between cylinder block and pis-
tonPiston and piston pin assembly
(Piston is available together
with piston pin as an assembly.)Piston grade
(piston outer diameter)Piston grade = cylinder bore
grade (inner diameter of bore)
*Between piston and connect-
ing rod———
PBIC0811E

EM-132
[VQ35DE]
CYLINDER BLOCK
Revision: 2004 November 2004 FX35/FX45
When Cylinder Block Is Reused
1. Measure the cylinder block 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.
Piston Selection Table
Unit: mm (in)
NOTE:

Piston is available together with piston pin as an assembly.

Piston pin (piston pin bore) 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 number (“0”, “1”, or “2”) stamped in front
of crankshaft, and select connecting rod bearing of same grade
number.
NOTE:
There is no grading for connecting rod big end inner diameter.
When Crankshaft and Connecting Rod Are Reused
1. Measure dimensions of the big end inner diameter of connecting rod and outer diameter of crankshaft pin
individually.
2. Confirm the big end inner diameter of connecting rod is within the standard value.
3. Apply the measured dimension to the “Connecting Rod Bearing Selection Table”.
4. Determine the grade of crankshaft pin diameter grade by comparing the measurement with the values
under the crankshaft pin outer diameter of the “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)
PBIC0812E
Grade 1 2 (or no mark) 3
Inner diameter of cylinder bore95.500 / 95.510
(3.7598 / 3.7602)95.510 / 95.520
(3.7602 / 3.7606)95.520 / 95.530
(3.7606 / 3.7610)
Outer diameter of piston95.480 / 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 inner diameter 55.000 - 55.013 (2.1654 - 2.1659)
Crankshaft pin outer 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

CYLINDER BLOCK
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Revision: 2004 November 2004 FX35/FX45
Undersize Bearings Usage Guide

When the specified oil clearance is not obtained with standard size connecting rod bearings, use under-
size (US) bearings.

When using undersize bearing, measure the bearing inner diameter with bearing installed, and grind
crankshaft pin so that the oil clearance satisfies the standard.
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. Apply journal diameter grade stamped on crankshaft front side
to column in “Main Bearing Selection Table”.
3. Find sign (main bearing grade) at crossing of row and column in
“Main Bearing Selection Table”.
When Cylinder Block and Crankshaft Are Reused
1. Measure inner diameter of cylinder block main bearing housing and outer diameter of crankshaft journal.
2. Find measured dimension in “Cylinder block bearing housing inner diameter” row of “Main Bearing Selec-
tion Table”.
3. Find the measured dimension in “Crankshaft main journal diameter” column in the following selection
table.
4. Select main bearing grade at the point where selected row and column meet in following selection table.
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
Size Thickness
US 0.25 (0.0098) 1.626 - 1.634 (0.0640 - 0.0643)
PBIC1908E
PBIC0811E
SEM452G

CYLINDER BLOCK
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Revision: 2004 November 2004 FX35/FX45
Main Bearing Grade Table (All Journals)
Undersize Bearing Usage Guide

Use undersize (US) bearing when oil clearance with standard size main bearing is not within specification.

When using undersize (US) bearing, measure the bearing inner diameter with bearing installed, and grind
journal until oil clearance falls within specification.
CAUTION:
Keep fillet R [1.5 mm (0.059 in)] when grinding crankshaft jour-
nal in order to use undersize bearing (All journals).
Bearing undersize table
Unit: mm (in) Grade number Thickness “T” mm (in) Width “W” mm (in)Identification color
(UPR/LWR)Remarks
0 2.000 - 2.003 (0.0787 - 0.0789)
19.9 - 20.1
(0.783 - 0.791)Black
Grade is the same for
upper and lower bear-
ings. 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
01UPP 2.003 - 2.006 (0.0789 - 0.0790)
Brown/Black
Grade is different for
upper and lower bear-
ings. LWR 2.000 - 2.003 (0.0787 - 0.0789)
12UPR 2.006 - 2.009 (0.0790 - 0.0791)
Green/Brown
LWR 2.003 - 2.006 (0.0789 - 0.0790)
23UPR 2.009 - 2.012 (0.0791 - 0.0792)
Yellow/Green
LWR 2.006 - 2.009 (0.0790 - 0.0791)
34UPR 2.012 - 2.015 (0.0792 - 0.0793)
Blue/Yellow
LWR 2.009 - 2.012 (0.0791 - 0.0792)
45UPR 2.015 - 2.018 (0.0793 - 0.0794)
Pink/Blue
LWR 2.012 - 2.015 (0.0792 - 0.0793)
56UPR 2.018 - 2.021 (0.0794 - 0.0796)
Purple/Pink
LWR 2.015 - 2.018 (0.0793 - 0.0794)
67UPR 2.021 - 2.024 (0.0796 - 0.0797)
White/Purple
LWR 2.018 - 2.021 (0.0794 - 0.0796)
Size Thickness
US 0.25 (0.0098) 2.132 - 2.140 (0.0839 - 0.0843)
PBIC1908E

EM-136
[VQ35DE]
CYLINDER BLOCK
Revision: 2004 November 2004 FX35/FX45
Inspection After DisassemblyABS004XJ
CRANKSHAFT END PLAY

Using a dial gauge, measure the clearance between thrust bear-
ings and crankshaft arm when crankshaft is moved fully forward
or backward.

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 side clearance between connecting rod and crankshaft
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 hole diameter of piston pin hole with an inside
micrometer.
Piston Pin Outer Diameter
Measure outer diameter of piston pin with a micrometer.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

CYLINDER BLOCK
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Revision: 2004 November 2004 FX35/FX45
Piston Skirt Diameter
Measure piston skirt diameter using micrometer.
Piston-to-Cylinder Bore Clearance

Calculate by piston skirt diameter and cylinder bore inner diameter (direction “X”, position “B”).
(Clearance) = (Cylinder bore inner diameter) – (Piston skirt diameter).

If it exceeds the limit, replace piston/piston pin assembly. Refer to EM-131, "HOW TO SELECT PISTON" .
Re-Boring Cylinder Bore
1. Cylinder bore size is determined by adding piston-to-cylinder bore clearance to piston diameter “A”.
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 specified piston-to-cylinder bore clearance.
5. Measure finished cylinder bore for out-of-round and taper.
NOTE:
Measurement should be done after cylinder bore cools down.
CRANKSHAFT MAIN JOURNAL DIAMETER

Measure 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 EM-
143, "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 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.

EM-142
[VQ35DE]
CYLINDER BLOCK
Revision: 2004 November 2004 FX35/FX45
CRANKSHAFT PIN JOURNAL DIAMETER

Measure outer diameter of crankshaft pin journal with microme-
ter.

If out of the standard, measure the connecting rod bearing oil
clearance. Then use undersize bearing. Refer to EM-142,
"CONNECTING ROD BEARING OIL CLEARANCE" .
CRANKSHAFT OUT-OF-ROUND AND TAPER

Using a micrometer, measure the dimensions at “4” different
points shown in the figure on each journal and pin.

Out-of-round is indicated by the difference in dimensions
between “X” and “Y” at “A” and “B”.

Taper is indicated by the difference in dimension 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-143, "
MAIN BEARING OIL CLEAR-
ANCE" and/or EM-142, "CONNECTING ROD BEARING OIL CLEARANCE" .
CRANKSHAFT RUNOUT

Place a V-block on a precise flat table to support journals on the
both end of crankshaft.

Place a dial gauge straight up on No. 3 journal.

While rotating crankshaft, read the movement of the pointer on
the dial gauge. (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 connect-
ing rod bearing cap, and tighten connecting rod bolts to the
specified torque. Using a inside micrometer measure the inner
diameter of connecting rod bearing. Refer to EM-126, "
ASSEM-
BLY" for the tightening procedure.
(Oil clearance) = (Connecting rod bearing inner diameter) – (Crank-
shaft pin diameter)Standard : 51.956 - 51.974 mm (2.0455 - 2.0462 in) dia.
PBIC0127E
Standard
Taper (Difference between “A” and “B”)
: Less than 0.002 mm (0.0001 in)
Out-of-round (Difference between “X” and “Y”)
: Less than 0.002 mm (0.0001 in)
SBIA0535E
Standard : Less than 0.025 mm (0.0010 in)
Limit : Less than 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

CYLINDER BLOCK
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Revision: 2004 November 2004 FX35/FX45

If clearance cannot be adjusted within the standard, grind crankshaft pin and use undersized bearing.
Refer to EM-132, "
HOW TO SELECT CONNECTING ROD BEARING" .
Method of Using Plastigage

Remove engine oil and dust on crankshaft pin and the surfaces
of each bearing completely.

Cut a plastigage slightly shorter than bearing width, and place it
in crankshaft axial direction, avoiding oil holes.

Install connecting rod bearings to connecting rod and connect-
ing rod bearing cap, and tighten connecting rod bolts to the
specified torque. Refer to EM-126, "
ASSEMBLY" for the tighten-
ing procedure.
CAUTION:
Never rotate crankshaft.

Remove connecting rod 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 to cylinder block and main bearing cap.
Measure the main bearing inner diameter with bearing cap bolt
tightened with main bearing beam to the specified torque. Refer
to EM-126, "
ASSEMBLY" for the tightening procedure.
(Oil clearance) = (Main bearing inner diameter) – (Crankshaft main
journal diameter)

If the measured value exceeds the limit, select main bearings
referring to the main bearing inner diameter and crankshaft jour-
nal outer diameter, so that the oil clearance satisfies the standard. Refer to EM-133, "
HOW TO SELECT
MAIN BEARING" .
Method of Using Plastigage

Remove engine oil and dust on crankshaft journal and the sur-
faces of each bearing completely.

Cut a plastigage slightly shorter than bearing width, and place it
in crankshaft axial direction, avoiding oil holes.

Install main bearing to cylinder block and main bearing cap, and
tighten main bearing bolts with main bearing beam to the speci-
fied torque. Refer to EM-126, "
ASSEMBLY" for the tightening
procedure.
CAUTION:
Never rotate crankshaft.

Remove 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”.
PBIC1149E
Standard : 0.035 - 0.045 mm (0.0014 - 0.0018 in)
(actual clearance)
Limit : 0.065 mm (0.0026 in)
PBIC1644E
PBIC1149E