engine INFINITI FX35 2008 Service Manual

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
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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
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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
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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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EX-1
ENGINE
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CONTENTS
EXHAUST SYSTEM
SERVICE INFORMATION .. ..........................2
PREPARATION .............................................. .....2
Commercial Service Tool .................................... ......2
EXHAUST SYSTEM ...........................................3
Checking Exhaust System ................................... .....3
Component ...............................................................3
Removal and Installation ..........................................4
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EXHAUST SYSTEMEX-3
< SERVICE INFORMATION >
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EXHAUST SYSTEM
Checking Exhaust SystemINFOID:0000000001327114
Check exhaust pipes, muffler and mounting for improper attachment,
leaks, cracks, damage or deterioration.
• If anything is found, repair or replace damaged parts.
ComponentINFOID:0000000001327115
CAUTION:
• Be sure to use genuine exhaust system parts or
equivalents which are specially designed for heat
resistance, corrosion resistance, and shape.
 Perform the operation with the exhaust system full y cooled down because the system will be hot
just after engine stops.
 Be careful not to cut your hand on the heat insulator edge.
VQ35DE
SMA211A
PBIC1583E
1. Main muffler 2. Mounting rubber 3. Main muffler mounting bracket
4. Mounting rubber 5. Center muffler 6. Gasket
7. Exhaust front tube 8. Gasket 9. Collar
10. Grommet 11. Exhaust mounting bracket 12. Grommet
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EX-4
< SERVICE INFORMATION >
EXHAUST SYSTEM
VK45DE
Removal and InstallationINFOID:0000000001327116
REMOVAL
 Disconnect each joint and mounting using power tool.
 When removing main muffler, remove main muffler mounting bracket bolts.
 Remove exhaust mounting bracket as follows:
1. Remove engine rear undercover.
2. Remove front cross bar. FSU-5, "
On-Vehicle Inspection and Service".
3. Remove exhaust mounting bracket.
INSTALLATION
Note the following, and install in the reverse order of removal.
13. Mounting rubber 14. Bracket 15. Ground cable
16. Ring gasket
PBIC1775E
1. Main muffler 2. Mounting rubber 3. Main muffler mounting bracket
4. Mounting rubber 5. Center muffler 6. Dynamic damper
7. Gasket 8. Exhaust front tube 9. Gasket
10. Mounting bracket 11. Exhaust mounting bracket 12. Collar
13. Grommet 14. Grommet 15. Mounting rubber
16. Bracket 17. Ground cable 18. Ring gasket
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EXHAUST SYSTEMEX-5
< SERVICE INFORMATION >
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 Tighten main muffler mounting bracket bolts in numerical order as
shown in the figure.
CAUTION:
 Always replace exhaust tube gasket s with new ones when reassembling.
 If heat insulator is badly deformed, repair or repl ace it. If deposits such as mud pile up on the heat
insulator, remove them.
 When installing heat insulator avoid large gaps or interference between heat insulator and each
exhaust pipe.
 Remove deposits from the sealing surface of each connection. Connect them securely to avoid
gases leakage.
 Temporarily tighten mounting nuts on the exhaust manifold side and mounting bolts on the vehicle
side. Check each part for unusual interference, an d then tighten them to the specified torque.
 When installing each mounting rubber, avoid twisting or unusual extension in up/down and right/left
directions.
INSPECTION AFTER INSTALLATION
 Make sure clearance between tail tube and bumper is even.
 With engine running, check exhaust tube joints for gas leakage and unusual noises.
 Check to ensure that mounting brackets and mount ing rubbers are installed properly and free from undue
stress. Improper installation could resu lt in excessive noise and vibration.
PBIC1049E
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FAX-26
< SERVICE INFORMATION >[AWD]
SERVICE DATA AND SPECIFICATIONS (SDS)
SERVICE DATA AND SPECIFICATIONS (SDS)
Wheel BearingINFOID:0000000001327520
Drive ShaftINFOID:0000000001327521
Axial end play
0.05 mm (0.002 in) or less
Joint Wheel side Front final drive assembly side
Engine type VQ35DE models VK45DE models VQ35DE models VK45DE models
Grease quantityLH side
77 – 97 g (2.71 – 3.42 oz) 95 – 105 g (3.35 – 3.70 oz)
RH side 113 – 123 g (3.98 – 4.33 oz)
Boots installed length LH side
136 mm (5.35 in) 150.9 – 152.9 mm (5.94
– 6.02 in) 95 – 97 mm
(3.74 – 3.82 in)
RH side 157.55 – 159.55 mm (6.20 – 6.28 in)
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DESCRIPTIONFFD-7
< SERVICE INFORMATION >
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DESCRIPTION
Cross-Sectional ViewINFOID:0000000001327480
VQ35DE models
VK45DE models
PDIA0647E
1. Side retainer 2. Side bearing 3. Differential case
4. Drive gear 5. Pinion mate shaft 6. Pinion mate gear
7. Side gear 8. Side shaft 9. Gear carrier
10. Drive pinion 11. Companion flange 12. Pinion front bearing
13. Pinion rear bearing 14. Extension tube retainer 15. Engine assembly
PDIA1214E
1. Side retainer 2. Side bearing 3. Differential case
4. Drive gear 5. Pinion mate shaft 6. Pinion mate gear
7. Side gear 8. Side shaft 9. Gear carrier
10. Drive pinion 11. Companion flange 12. Pinion front bearing
13. Pinion rear bearing 14. Extension tube retainer 15. Engine assembly
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