INFINITI FX35 2008 Service Manual

CYLINDER BLOCKEM-247
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5. Install crankshaft to cylinder block.
 While turning crankshaft by hand, make sure it turns smoothly.
6. Install main bearing caps.  Align the identification number to the journal position to install.
 Install the upper side of the identification number facing thefront of engine. (The number shall be read correctly from the
rear of engine.)
 Using plastic hammer or similar tool, tap them lightly to seat them on the installation position.
NOTE:
Main bearing cap cannot be replaced as a single parts, because
it is machined together with cylinder block.
7. Install each main bearing cap bolt as follows:
a. Apply new engine oil to threads and seating surface of main bearing cap bolts, and tighten all bolts temporarily.
b. Tighten main bearing cap bolt (M12) in order of 1 to 10.
c. Tighten main bearing cap sub bolt (M9) in order of 11 to 20.
d. Tighten main bearing cap bolt (M12) to 40 degrees clockwise in order of 1 to 10. (Angle tightening)
CAUTION:
Use angle wrench (SST) to ch eck tightening angle in step
“d” and “e”. Do not make judg ment by visual inspection.
e. Tighten main bearing cap sub bolt (M9) to 30 degrees clockwise in order of 11 to 20. (Angle tightening)
f. Tighten side bolt (M10) in order of 21 to 30.  After installing main bearing cap bolts, make sure that crankshaft can be rotated smoothly.
 Check the crankshaft end play. Refer to EM-256, "
Inspection After Disassembly".
g. Install cover of cylinder block rear left side (next to the starter motor housing).
8. Install new rear oil seal on rear oil seal retainer.  Install new rear oil seal so that each seal lip is oriented asshown in the figure.
PBIC0095E
: 39.2 N·m (4.0 kg-m, 29 ft-lb)
: 29.4 N·m (3.0 kg-m, 22 ft-lb)
PBIC0090E
PBIC0096E
: 49 N·m (5.0 kg-m, 36 ft-lb)
SEM715A
3AA93ABC3ACD3AC03ACA3AC03AC63AC53A913A773A893A873A873A8E3A773A983AC73AC93AC03AC3
3A893A873A873A8F3A773A9D3AAF3A8A3A8C3A863A9D3AAF3A8B3A8C

EM-248
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CYLINDER BLOCK
 Install rear oil seal to rear oil seal retainer with rear oil seal drift
(commercial service tool).
 Tap until flattened with front edge of rear oil seal retainer. Do not damage or scratch outer ci rcumference of oil seal.
 Make sure the garter spring is in position and seal lips not inverted.
9. Install rear oil seal retainer.  Apply new engine oil to both oil seal lip and dust seal lip.
 Apply a continuous bead of liquid gasket with 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".
10. Install piston to connecting rod.
a. Using snap ring pliers, install new snap ri ng to the groove of the piston rear side.
 Insert it fully into groove to install.
b. Install piston to connecting rod.  Using industrial use drier or similar tool, heat piston until piston pin can be pushed in by hand without
excess force [approx. 60 to 70 °C (140 to 158 °F)]. From the front to the rear, insert piston pin into piston
and connecting rod.
 Assemble so that the front mark on the piston head and the oil holes and the cylinder No. on connecting rod are positioned as
shown in the figure.
c. Using snap ring pliers, install new snap rings to the groove of the piston front side.
 Insert it fully into groove to install.
 After installing, make sure that connecting rod movessmoothly.
11. Using piston ring expander (commercial service tool), install pis- ton rings.
CAUTION:
 When installing piston ring s, be careful not to damage
piston.
 Be careful not to damage pi ston rings by expending them
excessively. Rear oil seal drift
Outer diameter : 102 mm (4.02 in)
Inner diameter : 86 mm (3.39 in)
PBIC0097E
SBIA0391E
PBIC0099E
PBIC0087E
3AA93ABC3ACD3AC03ACA3AC03AC63AC53A913A773A893A873A873A8E3A773A983AC73AC93AC03AC3
3A893A873A873A8F3A773A9D3AAF3A8A3A8C3A863A9D3AAF3A8B3A8C

CYLINDER BLOCKEM-249
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 Position each ring with the gap as shown in the figure, refer-
ring to the piston front mark.
 Install top ring and second ring with the stamped surface fac-
ing upward.
12. Install connecting rod bearings to connecting rod and connecting rod bearing cap.  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.
 When installing, align the connecting rod bearing stopper pro-
trusion with the cutout of connecting rod and connecting rod
bearing cap to install.
 Ensure the oil holes on connecting rod and that on the corre-
sponding bearing are aligned.
13. Install piston and connecting rod assembly to crankshaft.  Position the 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 cylinder No. on connecting rod to install.
 Be sure that front mark on piston head is facing front of engine.
 Using piston ring compressor [SST: EM03470000 (J8037)], install piston with the front ma rk on the piston head facing the
front of engine.
CAUTION:
Be careful not to damage cylinder wall and crankshaft pin,
resulting from an interferen ce of the connecting rod big
end.
14. Install connecting rod bearing cap.  Match the stamped cylinder number marks on connecting rodwith those on cap to install.
15. Tighten connecting rod nuts as follows:
a. Apply new engine oil to the threads and seats of connecting rod bolts and nuts.
b. Tighten connecting rod nuts. Stamped mark
To p r i n g : R
Second ring : 2R
PBIC0100E
PBIC2370E
PBIC0102E
PBIC2164E
3AA93ABC3ACD3AC03ACA3AC03AC63AC53A913A773A893A873A873A8E3A773A983AC73AC93AC03AC3
3A893A873A873A8F3A773A9D3AAF3A8A3A8C3A863A9D3AAF3A8B3A8C

EM-250
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CYLINDER BLOCK
c. Then tighten all connecting rod nuts 60 degrees clockwise.
(Angle tightening)
CAUTION:
Use angle wrench (SST) to ch eck tightening angle. Do not
make judgment by visual inspection.
 After tightening connecting rod nuts, make sure that crank-
shaft rotates smoothly.
 Check the connecting rod side clearance. Refer to EM-256,
"Inspection After Disassembly".
16. Install knock sensor.  Install it with its connector facing the rear of engine.
 Install the sub-harness with its shorter branch line to the rightbank.
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.
17. Note the following, and assemble in the re verse 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, reinforcement plate and pilot converter (if not installed in step 4) as shown in the figure.
 Face chamfered or rounded edge side to crankshaft.
 Holding ring gear with ring gear stopper [SST: J-45476].
 Tighten mounting bolts crosswise over several times.
 When install pilot converter, using drift [outer diameter: approx. 35 mm (1.38 in)]. Press-fit as far as it will go.
CAUTION:
Make sure that guide pin is installed at the rear end of
crankshaft.
How to Select Piston and BearingINFOID:0000000001325805
DESCRIPTION
: 14.7 N·m (1.5 kg-m, 11 ft-lb)
PBIC0104E
PBIC0105E
PBIC0106E
PBIC1965E
3AA93ABC3ACD3AC03ACA3AC03AC63AC53A913A773A893A873A873A8E3A773A983AC73AC93AC03AC3
3A893A873A873A8F3A773A9D3AAF3A8A3A8C3A863A9D3AAF3A8B3A8C

CYLINDER BLOCKEM-251
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*: 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.
HOW TO SELECT PISTON
When New Cylinder Block is Used:
Check the cylinder bore grade (“1”, “2” or “3”) on the rear upper side
between cylinder block banks, 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-256, "Inspection After Disassembly".
2. Determine the bore grade by comparing the measurement with the values the “Cylinder bore inner diame-
ter” of the “Piston Selection Table” . Select piston of the same grade.
Piston Selection Table
Selection points Selection parts Selection items Selection methods
Between cylinder block and
crankshaft Main bearing Main 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 bearing Connecting 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* ———
PBIC2371E
PBIC2372E
3AA93ABC3ACD3AC03ACA3AC03AC63AC53A913A773A893A873A873A8E3A773A983AC73AC93AC03AC3
3A893A873A873A8F3A773A9D3AAF3A8A3A8C3A863A9D3AAF3A8B3A8C

EM-252
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CYLINDER BLOCK
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:
1. Measure the connecting rod big end diameter. Refer to EM-256, "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-256, "
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)
Under Size 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:
Grade 1 2 (or no mark) 3
Cylinder bore inner diameter 93.000 - 93.010
(3.6614 - 3.6618) 93.010 - 93.020
(3.6618 - 3.6622) 93.020 - 93.030
(3.6622 - 3.6626)
Piston skirt diameter 92.980 - 92.990
(3.6606 - 3.6610) 92.990 - 93.000
(3.6610 - 3.6614) 93.000 - 93.010
(3.6614 - 3.6618)
PBIC2374E
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 No color
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
3AA93ABC3ACD3AC03ACA3AC03AC63AC53A913A773A893A873A873A8E3A773A983AC73AC93AC03AC3
3A893A873A873A8F3A773A9D3AAF3A8A3A8C3A863A9D3AAF3A8B3A8C

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
3AA93ABC3ACD3AC03ACA3AC03AC63AC53A913A773A893A873A873A8E3A773A983AC73AC93AC03AC3
3A893A873A873A8F3A773A9D3AAF3A8A3A8C3A863A9D3AAF3A8B3A8C

EM-254
< SERVICE INFORMATION >[VK45DE]
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
3AA93ABC3ACD3AC03ACA3AC03AC63AC53A913A773A893A873A873A8E3A773A983AC73AC93AC03AC3
3A893A873A873A8F3A773A9D3AAF3A8A3A8C3A863A9D3AAF3A8B3A8C

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
3AA93ABC3ACD3AC03ACA3AC03AC63AC53A913A773A893A873A873A8E3A773A983AC73AC93AC03AC3
3A893A873A873A8F3A773A9D3AAF3A8A3A8C3A863A9D3AAF3A8B3A8C

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-
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
3AA93ABC3ACD3AC03ACA3AC03AC63AC53A913A773A893A873A873A8E3A773A983AC73AC93AC03AC3
3A893A873A873A8F3A773A9D3AAF3A8A3A8C3A863A9D3AAF3A8B3A8C