2008 INFINITI FX35 engine

EM-246
< SERVICE INFORMATION >[VK45DE]
CYLINDER BLOCK
 Tighten each plug as specified below.
3. Install main bearings and thrust bearings as follows:
a. Remove dust, dirt and oil on the bearing mating surfaces of cylinder block and main bearing caps.
b. Install thrust bearings to the both sides of the No. 3 journal hous- ing on cylinder block and main bearing cap.
 Install thrust bearings with the oil groove facing the crankshaftarm (outside).
 Install thrust bearing with a protrusion on one end on cylinder block, and thrust bearing with a protrusion at center on main
bearing cap. Align each protrusion with mating notch.
c. Install main bearings paying attention to the direction.  Main bearing with oil hole and groove goes on cylinder block.
The one without them goes on main bearing cap.
 Before installing main 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 main bearing stopper protrusion to cut- out of cylinder block and main bearing caps.
 Ensure the oil holes on cylinder block and those on the corre-
sponding bearing are aligned.
4. Install pilot converter to crankshaft, if removed.  With drift [outer diameter: appr ox. 35 mm (1.38 in)], press-fit
as far as it will go.
 Press-fit pilot converter with its chamfering side facing crank- shaft as shown in the figure.
 It is possible to remove pilot converter without hoisting engine with engine stand.
Part Washer Tightening torque
A Yes 53.9 N·m (5.5 kg-m, 40 ft-lb)
B No 19.6 N·m (2.0 kg-m, 14 ft-lb)
C Yes 62.7 N·m (6.4 kg-m, 46 ft-lb)
D Yes 62.7 N·m (6.4 kg-m, 46 ft-lb)
PBIC2368E
PBIC2369E
EMP0569D
SEM537E
3AA93ABC3ACD3AC03ACA3AC03AC63AC53A913A773A893A873A873A8E3A773A983AC73AC93AC03AC3
3A893A873A873A8F3A773A9D3AAF3A8A3A8C3A863A9D3AAF3A8B3A8C

CYLINDER BLOCKEM-247
< SERVICE INFORMATION > [VK45DE]
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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
< SERVICE INFORMATION >[VK45DE]
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
< SERVICE INFORMATION > [VK45DE]
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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
< SERVICE INFORMATION >[VK45DE]
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

EM-258
< SERVICE INFORMATION >[VK45DE]
CYLINDER BLOCK
 Measure the side clearance of piston ring and piston ring groove
with 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 i nner diameter is within the speci-
fication. Refer to "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 measure
the piston ring end gap with 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.
CONNECTING ROD BEND AND TORSION
 Check with connecting rod aligner.
 If it exceeds the limit, replace connecting rod assembly. Standard:
Top ring : 0.045 - 0.080 mm (0.0018 - 0.0031 in)
2nd ring : 0.030 - 0.070 mm (0.0012 - 0.0028 in)
Oil ring : 0.065 - 0.135 mm (0.0026 - 0.0053 in)
Limit:
Top ring : 0.11 mm (0.0043 in)
2nd ring : 0.1 mm (0.004 in)
SEM024AA
Standard:
Top ring : 0.22 - 0.32 mm (0.0087 - 0.0126 in)
2nd ring : 0.22 - 0.32 mm (0.0087 - 0.0126 in)
Oil ring : 0.20 - 0.50 mm (0.0079 - 0.0197 in)
Limit:
Top ring : 0.56 mm (0.0220 in)
2nd ring : 0.56 mm (0.0220 in)
Oil ring : 0.96 mm (0.0378 in)
PBIC0118E
Bend:Limit : 0.15 mm (0.0059 in) per 100 mm (3.94 in) length
To r s i o n : Limit : 0.30 mm (0.0118 in) per 100 mm (3.94 in) length
PBIC2077E
3AA93ABC3ACD3AC03ACA3AC03AC63AC53A913A773A893A873A873A8E3A773A983AC73AC93AC03AC3
3A893A873A873A8F3A773A9D3AAF3A8A3A8C3A863A9D3AAF3A8B3A8C

EM-260
< SERVICE INFORMATION >[VK45DE]
CYLINDER BLOCK
 If replacing connecting rod assembly, refer to "CONNECTING
ROD BEARING OIL CLEARANCE" to select the connecting 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 scraper, remove gasket on the cylinder block surface, and also remove engine oil, scale, carbon, orother contamination.
CAUTION:
Be careful not to allow gasket flakes to en ter engine oil or engine coolant passages.
 Measure the distortion on the cylinder block upper face at some different points in six directions with straightedge and feeler gauge.
 If it exceeds the limit, replace cylinder block.
MAIN BEARING HOUSING INNER DIAMETER
 Install main bearing caps and main bearing without installing main bearings, and tighten main bearing cap bolts to the specified
torque. Refer to EM-242, "
Disassembly and Assembly" for the
tightening procedure.
 Measure the inner diameter of main bearing housing with 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
PBIC2164E
Grade 0 1
Connecting rod bushing
inner diameter * 22.000 - 22.006
(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)
PBIC2372E
Limit : 0.1 mm (0.004 in)
SEM123C
Standard : 68.944 - 68.968 mm (2.7143 - 2.7153 in)
PBIC1643E
3AA93ABC3ACD3AC03ACA3AC03AC63AC53A913A773A893A873A873A8E3A773A983AC73AC93AC03AC3
3A893A873A873A8F3A773A9D3AAF3A8A3A8C3A863A9D3AAF3A8B3A8C

CYLINDER BLOCKEM-261
< SERVICE INFORMATION > [VK45DE]
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 Using bore gauge, measure cylinder bore for wear, out-of-round
and taper at six different points on each cylinder. (“X” and “Y” direc-
tions 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 satis-
fies the standard.
CAUTION:
When using oversize piston, use oversize pistons for all cylin-
ders with oversize piston rings.
Piston Skirt Diameter
 Measure the outer diameter of piston skirt with micrometer.
 Measure point “H” (Distance fr om the top): 42 mm (1.65 in)
Piston to Cylinder Bore Clearance
Calculate by piston skirt diameter and cylinder bor e inner diameter (direction “X”, 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-250, "
How to
Select Piston and Bearing".
Standard inner diameter:
93.000 - 93.030 mm (3.6614 - 3.6626 in)
Wear limit: 0.2 mm (0.008 in)
Out-of-round (Difference between “X” and “Y”):
0.015 mm (0.0006 in)
Taper limit (Difference between “A” and “C”):
0.01 mm (0.0004 in)
Oversize (OS) : 0.2 mm (0.008 in)
PBIC0123E
PBIC0124E
Standard : 92.980 - 93.010 mm (3.6606 - 3.6618 in)
PBIC0125E
PBIC0126E
Standard : 0.010 - 0.030 mm (0.0004 - 0.0012 in)
Limit : 0.08 mm (0.0031 in)
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