2006 INFINITI FX35 engine

CYLINDER BLOCK EM-269
[VK45DE]
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Revision: 2006 December 2006 FX35/FX45

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 speci-
fied torque. Refer to EM-253, "
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

Using bore gauge, measure cylinder bore for wear, out-of-round
and taper at six different points on each cylinder. (“X” and “Y”
directions 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
satisfies the standard.
CAUTION:
When using oversize piston, use oversize pistons for all
cylinders with oversize piston rings. Limit : 0.1 mm (0.004 in)
SEM123C
Standard : 68.944 - 68.968 mm (2.7143 - 2.7153 in)
PBIC1643E
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

EX-1
EXHAUST SYSTEM
B ENGINE
CONTENTS
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SECTION EX
A
EX
Revision: 2006 December 2006 FX35/FX45
EXHAUST SYSTEM
PREPARATION ...................................................... ..... 2
Commercial Service Tools ................................... ..... 2
EXHAUST SYSTEM .............................................. ..... 3
Checking Exhaust System .................................. ..... 3 Components ........................................................
..... 3
Removal and Installation ..................................... ..... 4
REMOVAL ........................................................ ..... 4
INSTALLATION ................................................ ..... 4
INSPECTION AFTER INSTALLATION ............. ..... 5

EXHAUST SYSTEM EX-3
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Revision: 2006 December 2006 FX35/FX45
EXHAUST SYSTEMPFP:20100
Checking Exhaust SystemNBS004IN
Check exhaust pipes, muffler and mounting for improper attachment,
leaks, cracks, damage or deterioration.

If anything is found, repair or replace damaged parts.
ComponentsNBS004IO
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 fully 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

EX-4
EXHAUST SYSTEM
Revision: 2006 December 2006 FX35/FX45
VK45DE
Removal and InstallationNBS005S5
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-6, "
FRONT SUSPENSION ASSEMBLY" .
3. Remove exhaust mounting bracket.
INSTALLATION
Note the following, and install in the reverse order of removal.
10. Grommet 11. Exhaust mounting bracket 12. Grommet
13. Mounting rubber 14. Bracket 15. Ground cable
16. Ring gasket
PBIC5097E
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

EXHAUST SYSTEM EX-5
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Revision: 2006 December 2006 FX35/FX45

Tighten main muffler mounting bracket bolts in numerical order
as shown in the figure.
CAUTION:

Always replace exhaust tube gaskets with new ones when reassembling.

If heat insulator is badly deformed, repair or replace 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 vehi-
cle side. Check each part for unusual interference, and 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 mounting rubbers are installed properly and free from undue
stress. Improper installation could result in excessive noise and vibration.
PBIC1049E

DESCRIPTION FFD-7
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FFD
Revision: 2006 December 2006 FX35/FX45
DESCRIPTIONPFP:00000
Cross-Sectional ViewNDS000B7
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

FFD-8
DIFFERENTIAL GEAR OIL
Revision: 2006 December 2006 FX35/FX45
DIFFERENTIAL GEAR OILPFP:KLD30
Changing Differential Gear OilNDS000CP
DRAINING
1. Stop engine.
2. Remove drain plug (1) and drain gear oil.
3. Set a gasket on drain plug (1) and install it to final drive assem- bly and tighten to the specified torque. Refer to FFD-17, "
COM-
PONENTS (VQ35DE MODELS)" , FFD-19, "COMPONENTS
(VK45DE MODELS)" .
CAUTION:
Do not reuse gasket.
FILLING
1. Remove filler plug (1). Fill with new gear oil until oil level reaches
the specified level near filler plug mounting hole.
2. After refilling oil, check oil level. Set a gasket to filler plug (1), then install it to final drive assembly. Refer to FFD-17, "
COMPO-
NENTS (VQ35DE MODELS)" , FFD-19, "COMPONENTS
(VK45DE MODELS)" .
CAUTION:
Do not reuse gasket.
Checking Differential Gear OilNDS000CQ
OIL LEAKAGE AND OIL LEVEL

Make sure that oil is not leaking from final drive assembly or around it.

Remove filler plug (1) and check oil level from filler plug mount-
ing hole as shown in the figure.
CAUTION:
Do not start engine while checking oil level.

Set a gasket on filler plug (1) and install it on final drive assem-
bly. Refer to FFD-17, "
COMPONENTS (VQ35DE MODELS)" ,
FFD-19, "
COMPONENTS (VK45DE MODELS)" .
CAUTION:
Do not reuse gasket.
PDIA0781J
Oil grade and Viscosity:
Refer to MA-12, "
Fluids and Lubricants" .
Oil capacity:
Approx. 0.65 (1-3/8 US pt, 1-1/8 Imp pt)
PDIA0782J
PDIA0782J

SIDE OIL SEAL FFD-11
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Revision: 2006 December 2006 FX35/FX45
SIDE OIL SEALPFP:33142
Removal and InstallationNDS000BB
NOTE:
Left side oil seal is attached to engine assembly. Replace it when front final drive assembly is removed
from vehicle.
REMOVAL
Right Side:
1. Remove the front drive shaft. Refer to FAX-13, "Removal and Installation (Right Side)" .
2. Remove the side oil seal using a flat-bladed screwdriver. CAUTION:
Be careful not to damage gear carrier.
Left Side:
1. Remove the front final drive assembly from vehicle. Refer to FFD-13, "Removal and Installation (VQ35DE
Models)" or FFD-15, "Removal and Installation (VK45DE Models)" .
2. Remove the side oil seal using a flat-bladed screwdriver. CAUTION:
Be careful not to damage gear carrier.
INSTALLATION
Right Side:
1. Apply multi-purpose grease to sealing lips of side oil seal.
2. Using the drift, press-fit side oil seal so that its surface comes face to face with the end surface of the side retainer.
CAUTION:

Do not reuse oil seal.

When installing, do not incline oil seal.
3. Install the front drive shaft. Refer to FAX-13, "
Removal and
Installation (Right Side)" .
Left Side:
1. Apply multi-purpose grease to sealing lips of side oil seal.
2. Using the drift, press-fit side oil seal so that its surface comes face to face with the end surface of the gear carrier.
CAUTION:

Do not reuse oil seal.

When installing, do not incline oil seal.
3. Install the front final drive assembly on vehicle. Refer to FFD-13,
"Removal and Installation (VQ35DE Models)" or FFD-15,
"Removal and Installation (VK45DE Models)" .
4. Install the front drive shaft. Refer to FAX-12, "
Removal and
Installation (Left Side)" .
PDIA0655E
Tool number A: ST33400001 (J-26082)
PDIA0787J
Tool number A: KV38102100 (J-25803-01)
PDIA0788J