2008 INFINITI FX35 bearing

CYLINDER BLOCKEM-131
< SERVICE INFORMATION > [VQ35DE]
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 Assemble so that the front mark on the piston head and the
cylinder number on connecting rod are positioned as shown in
the figure.
c. Install new snap ring to the groove of the piston front side.  Insert it fully into groove to install.
 After installing, make sure that connecting rod moves
smoothly.
10. Using a piston ring expander (commercial service tool), install piston rings.
CAUTION:
 When installing piston rings, be careful not to damagepiston.
 Be careful not to damage piston rings by expending them excessively.
 If there is stamped mark on ri ng, mount it with marked side up.
NOTE:
If there is no stamp on ring, no specific orientation is required
for installation.
 Position each ring with the gap as shown in the figure referring to the piston front mark.
 Check the piston ring side clearance. Refer to EM-138, "
Inspection After Disassembly".
11. Install connecting rod bearings to connecting rod and connecting rod bearing cap. CAUTION:
Be careful not to drop connecting r od bearing, and to scratch the surface.
 Before installing connecting rod bearings, apply engine oi l to the bearing surface (inside). Do not apply
engine oil to the back surface, but thoroughly clean it.
SEM838F
PBIC0087E
Stamped mark:
To p r i n g : —
Second ring : “R”
SEM757G
PBIC0808E
3AA93ABC3ACD3AC03ACA3AC03AC63AC53A913A773A893A873A873A8E3A773A983AC73AC93AC03AC3
3A893A873A873A8F3A773A9D3AAF3A8A3A8C3A863A9D3AAF3A8B3A8C

EM-132
< SERVICE INFORMATION >[VQ35DE]
CYLINDER BLOCK
 When installing, align connecting rod bearing stopper protru-
sion with cutout of connecting rods and connecting rod bearing
caps to install.
 Ensure the oil hole on connecting rod and that on the corre- sponding bearing are aligned.
12. 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 the cylinder bore, piston and crankshaft pin journal.
 Match the cylinder position with the cyli nder number on connecting rod to install.
 Be sure that front mark on piston crown is facing front of engine.
 Using a piston ring compressor (SST) or suitable tool, install
piston with the front mark on t he piston crown facing the front
of the engine.
CAUTION:
Be careful not to damage the cylinder wall and crankshaft
pin, resulting from an interf erence of the connecting rod big
end.
13. Install connecting rod bearing cap.  Match the stamped cylinder number marks on connecting rod
with those on connecting rod bearing cap to install.
 Be sure that front mark on connecting rod bearing cap is fac- ing front of the engine.
14. Tighten connecting rod bolt as follows:
a. Inspect the outer diameter of connecting rod bolt. Refer to EM-138, "
Inspection After Disassembly".
b. Apply engine oil to the threads and seats of connecting rod bolts.
c. Tighten connecting rod bolts.
PBIC2067E
PBIC2945E
PBIC0809E
: 19.6 N·m (2.0 kg-m, 14 ft-lb)
3AA93ABC3ACD3AC03ACA3AC03AC63AC53A913A773A893A873A873A8E3A773A983AC73AC93AC03AC3
3A893A873A873A8F3A773A9D3AAF3A8A3A8C3A863A9D3AAF3A8B3A8C

CYLINDER BLOCKEM-133
< SERVICE INFORMATION > [VQ35DE]
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d. Then tighten all connecting rod bolts 90 degrees clockwise
(Angle tightening).
CAUTION:
Always use the angle wrench [SST: KV10112100 (BT8653-
A)]. Avoid tightening b ased on visual check alone.
 After tightening connecting rod bolts, make sure that crank-
shaft rotates smoothly.
 Check the connecting rod side clearance. Refer to EM-138,
"Inspection After Disassembly".
15. Install baffle plate to main bearing beam (2WD models).
16. Install new rear oil seal retainer to cylinder block.  Apply new engine oil to both oil seal lip and dust seal lip.
 Apply a continuous bead of liquid gasket with the tube presser(commercial service tool) to rear oil seal retainer as shown in
the figure.
Use Genuine RTV Silicone Seal ant or equivalent. Refer to
GI-44, "
Recommended Chemical Product and Sealant".
CAUTION:
 Replace with a new parts.
 Attaching should be done wi thin 5 minutes after coating.
 Make sure the garter spring is in position and seal lips not
inverted.
NOTE:
Regard both rear oil seal and retainer as an assembly.
17. Install pilot converter.  With a drift [outer diameter: approx. 33 mm (1.30 in)], press-fitas far as it will go.
 Press-fit pilot converter with its chamfer facing crankshaft as shown in the figure.
SEM953E
PBIC2661E
PBIC0899E
SEM537E
3AA93ABC3ACD3AC03ACA3AC03AC63AC53A913A773A893A873A873A8E3A773A983AC73AC93AC03AC3
3A893A873A873A8F3A773A9D3AAF3A8A3A8C3A863A9D3AAF3A8B3A8C

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* ———
3AA93ABC3ACD3AC03ACA3AC03AC63AC53A913A773A893A873A873A8E3A773A983AC73AC93AC03AC3
3A893A873A873A8F3A773A9D3AAF3A8A3A8C3A863A9D3AAF3A8B3A8C

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
3AA93ABC3ACD3AC03ACA3AC03AC63AC53A913A773A893A873A873A8E3A773A983AC73AC93AC03AC3
3A893A873A873A8F3A773A9D3AAF3A8A3A8C3A863A9D3AAF3A8B3A8C

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
3AA93ABC3ACD3AC03ACA3AC03AC63AC53A913A773A893A873A873A8E3A773A983AC73AC93AC03AC3
3A893A873A873A8F3A773A9D3AAF3A8A3A8C3A863A9D3AAF3A8B3A8C

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
3AA93ABC3ACD3AC03ACA3AC03AC63AC53A913A773A893A873A873A8E3A773A983AC73AC93AC03AC3
3A893A873A873A8F3A773A9D3AAF3A8A3A8C3A863A9D3AAF3A8B3A8C

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)
3AA93ABC3ACD3AC03ACA3AC03AC63AC53A913A773A893A873A873A8E3A773A983AC73AC93AC03AC3
3A893A873A873A8F3A773A9D3AAF3A8A3A8C3A863A9D3AAF3A8B3A8C