2008 INFINITI FX35 shaft

EM-134
< SERVICE INFORMATION >[VQ35DE]
CYLINDER BLOCK
18. Install knock sensor.
 Install knock sensor so that connector faces front of theengine.
 After installing knock sensor, connect harness connector, and lay it out to rear of the 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 bac k surface of knock sensor.
 Make sure that knock sensor does not interfere with other parts.
19. Note the following, assemble in the reverse order of disassembly after this step.
Drive plate When installing drive plate to crankshaft, be sure to correctly align crankshaft side guide pin and drive plate side guide pin hole.
- If these are not aligned correctly, engine runs roughly and “MIL” turns on.
 Install drive plate and reinforcement plate as shown in the fig- ure.
 Holding ring gear with the ring gear stopper [SST: KV10117700 (J44716)].
 Tighten the mounting bolts crosswise over several times.
CAUTION:
Make sure that dowel pin is installed at the rear end of
crankshaft.
How to Select Piston and BearingINFOID:0000000001325748
DESCRIPTION
*: For the service parts, the grade for fitting cannot be selected between piston pin and connecting rod. (Only “0” grade is a vailable.) 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 dimens ion 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.
PBIC0810E
PBIC0910E
Selection points Selection parts Selection items Selection methods
Between cylinder block and
crankshaft Main 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 rod Connecting 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-
ton Piston 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* ———
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CYLINDER BLOCKEM-135
< SERVICE INFORMATION > [VQ35DE]
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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-138, "Inspection After Disassembly".
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 assembly.
 Piston pin (piston pin hole) grade is provided only for the parts installed at the plant. For service parts, no pis-
ton 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
SEM756G
PBIC0812E
Grade 1 2 (or no mark) 3
Cylinder bore inner diameter 95.500 - 95.510
(3.7598 - 3.7602) 95.510 - 95.520
(3.7602 - 3.7606) 95.520 - 95.530
(3.7606 - 3.7610)
Piston skirt diameter 95.480 - 95.490
(3.7590 - 3.7594) 95.490 - 95.500
(3.7594 - 3.7598) 95.500 - 95.510
(3.7598 - 3.7602)
SEM452G
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EM-136
< SERVICE INFORMATION >[VQ35DE]
CYLINDER BLOCK
1. Measure the connecting rod big end diameter. Refer to
EM-138, "Inspection After Disassembly".
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-138, "
Inspection After Disassembly".
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 c onnecting rod bearing oil clearance satisfies the standard.
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 bearinghousing grade on rear left side of cylinder block.
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
PBIC1908E
Size Thickness
US 0.25 (0.0098) 1.626 - 1.634 (0.0640 - 0.0643)
SEM756G
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CYLINDER BLOCKEM-137
< SERVICE INFORMATION > [VQ35DE]
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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 select ed row and column meet in “Main Bearing Selection
Table”.
When Cylinder Block and Crankshaft are Reused
1. Measure cylinder block main bearing housing inner di ameter and crankshaft main journal diameter. Refer
to EM-138, "
Inspection After Disassembly" and EM-138, "Inspection After Disassembly".
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.
Main Bearing Selection Table
SEM452G
PBIC1981E
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EM-138
< SERVICE INFORMATION >[VQ35DE]
CYLINDER BLOCK
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 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 - 1.7 mm (0.059 - 0.067 in)].
Bearing undersize table
Unit: mm (in)
Inspection After DisassemblyINFOID:0000000001325749
CRANKSHAFT END PLAY
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)
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CYLINDER BLOCKEM-139
< SERVICE INFORMATION > [VQ35DE]
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 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 t he limit, replace thrust bearings,
and measure again. If it still exceeds the limit, replace crankshaft
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 crankshaft
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 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-134, "
How to Select Piston and Bearing".
NOTE:
 Piston is available together with piston pin as 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)
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EM-144
< SERVICE INFORMATION >[VQ35DE]
CYLINDER BLOCK
Measure the outer diameter of
piston skirt with a micrometer.
Piston-to-Cylinder Bore Clearance
Calculate by piston skirt diameter and cylinder bor e inner diameter (direction “Y”, position “B”).
(Clearance) = (Cylinder bore inner diameter) – (Piston skirt diameter).
 If the calculated value exceeds the limit, replace piston and piston pin assembly. Refer to EM-134, "
How to
Select Piston and Bearing".
Re-boring Cylinder Bore
1. Cylinder bore size is determined by adding piston to cylinder bore clearance to piston skirt diameter.
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 the specified piston to cylinder bore clearance.
5. Measure finished cylinder bore for the out-of-round and taper. NOTE:
Measurement should be done after cylinder bore cools down.
CRANKSHAFT MAIN JOURNAL DIAMETER
 Measure the outer diameter of cranks haft main journals with a micrometer.
 If out of the standard, measure t he main bearing oil clearance. Then use undersize bearing. Refer to "MAIN
BEARING OIL CLEARANCE".
CRANKSHAFT PIN JOURNAL DIAMETER
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 skirt 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.
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CYLINDER BLOCKEM-145
< SERVICE INFORMATION > [VQ35DE]
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 Measure the outer diameter of crankshaft pin journal with a
micrometer.
 If out of the standard, measure the connecting rod bearing oil clearance. Then use undersize bearing. Refer to "CONNECTING
ROD BEARING OIL CLEARANCE".
CRANKSHAFT OUT-OF-ROUND AND TAPER
 Measure the dimensions at four different points as shown in thefigure on each main journal and pin journal with a micrometer.
 Out-of-round is indicated by t he difference in the dimensions
between “X” and “Y” at “A” and “B”.
 Taper is indicated by the difference in the dimensions between “A” and “B” at “X” and “Y”.
 If the measured value exceeds the li mit, 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 "MAIN BEARING OIL CLEARANCE" and/or
"CONNECTING ROD BEARING OIL CLEARANCE".
CRANKSHAFT RUNOUT
 Place V-block on precise flat table, and support the journals on the both end of crankshaft.
 Place a dial indicator straight up on the No. 3 journal.
 While rotating crankshaft, read the movement of the pointer on a dial indicator. (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 connecting rod cap, and tighten connecting rod bolts to the specified torque.
Refer to EM-123, "
Disassembly and Assembly" for the tightening
procedure.
 Measure the inner diameter of connecting rod bearing with an
inside micrometer.
(Oil clearance) = (Connecting rod bearing inner diameter) – (Crank-
shaft pin journal diameter) Standard : 51.956 - 51.974 mm (2.0455 - 2.0462 in) dia.
PBIC0127E
Limit:
Out-of-round (Differen ce between “X” and “Y”)
: 0.002 mm (0.0001 in)
Taper (Difference between “A” and “B”) : 0.002 mm (0.0001 in)
SBIA0535E
Standard : Less than 0.05 mm (0.0020 in)
Limit : 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
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