2006 INFINITI M35 Oil

EM-122
[VQ35DE]
ENGINE ASSEMBLY
Revision: 2006 January2006 M35/M45
When installing engine mounting bracket (RH and LH) on cylin-
der block, tighten two upper bolts (shown as “A” in the figure)
first. Then tighten two lower bolts (shown as “B” in the figure).
Install engine mounting bracket (RH) (lower) as follows:
–Temporarily tighten mounting bolts (shown as “C”, “D” and “E” in
the figure).
–Tighten mounting bolts to the specified torque with following
mounting surfaces touched.
• Engine mounting bracket (RH) to engine mounting bracket (RH)
(lower) (shown as “C” and “D” in figure).
• Front final drive to engine mounting bracket (RH) (lower) (shown
as “E” in figure).
Make sure all engine mounting insulators are seated properly,
then tighten mounting nuts.
INSPECTION AFTER INSTALLATION
Inspection for Leaks
The following are procedures for checking fluids leak, lubricates leak and exhaust gases leak.
Before starting engine, check oil/fluid levels including engine coolant and engine oil. If less than required
quantity, fill to the specified level. Refer to MA-12, "
RECOMMENDED FLUIDS AND LUBRICANTS" .
Use procedure below to check for fuel leakage.
–Turn ignition switch “ON” (with engine stopped). With fuel pressure applied to fuel piping, check for fuel
leakage at connection points.
–Start engine. With engine speed increased, check again for fuel leakage at connection points.
Run engine to check for unusual noise and vibration.
Warm up engine thoroughly to make sure there is no leakage of fuel, exhaust gases, or any oil/fluids
including engine oil and engine coolant.
Bleed air from lines and hoses of applicable lines, such as in cooling system.
After cooling down engine, again check oil/fluid levels including engine oil and engine coolant. Refill to the
specified level, if necessary.
Summary of the inspection items:
* Transmission/transaxle/CVT fluid, power steering fluid, brake fluid, etc.
PBIC3826E
Item Before starting engine Engine running After engine stopped
Engine coolant Level Leakage Level
Engine oil Level Leakage Level
Other oils and fluid* Level Leakage Level
Fuel Leakage Leakage Leakage
Exhaust gases — Leakage —

EM-124
[VQ35DE]
CYLINDER BLOCK
Revision: 2006 January2006 M35/M45
Disassembly and AssemblyNBS004O1
DISASSEMBLY
NOTE:
Explained here is how to disassemble with engine stand supporting transmission surface. When using differ-
ent type of engine stand, note with difference in steps and etc.
1. Remove the engine assembly from the vehicle. Refer to EM-29, "
Removal and Installation (2WD Models)"
or EM-36, "Removal and Installation (AWD Models)" .
2. Remove the parts that may restrict installation of engine to widely use engine stand.
NOTE:
The procedure is described assuming that you use a widely use engine stand holding the surface, to
which transmission is installed.
Remove drive plate with power tool. Fix crankshaft with a ring gear stopper [SST: KV1011770
(J44716)], and remove mounting bolts.
Loosen mounting bolts in diagonal order.
1. Cylinder block 2. Reinforcement plate 3. Drive plate
4. Rear oil seal retainer 5. Cover 6. Gasket
7. Knock sensor 8. Oil jet 9. Thrust bearing
10. Pilot converter 11. Main bearing 12. Crankshaft
13. Crankshaft key 14. Main bearing cap 15. Main bearing cap bolt
16. Main bearing beam 17. Baffle plate (2WD models) 18. Top ring
19. Second ring 20. Oil ring 21. Piston
22. Piston pin 23. Snap ring 24. Connecting rod
25. Connecting rod bearing 26. Connecting rod bearing cap 27. Connecting rod bolt
1. Cylinder block 2. Gasket 3. Water connector
4. Gasket 5. Cylinder block heater 6. Connector protector cap
PBIC2614E

CYLINDER BLOCK
EM-125
[VQ35DE]
C
D
E
F
G
H
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MA
EM
Revision: 2006 January2006 M35/M45
CAUTION:
Do not disassemble drive plate.
Never place drive plate with signal plate facing down.
When handling signal plate, take care not to damage or
scratch it.
Handle signal plate in a manner that prevents it from
becoming magnetized.
3. Lift the engine with hoist to install it onto the widely use engine stand.
CAUTION:
Use an engine stand that has a load capacity [220 kg (441 lb) or more] large enough for supporting
the engine weight.
If the load capacity of the stand is not adequate, remove the following parts beforehand to reduce the
potential risk of overturning the stand.
–Remove intake manifold collector. Refer to EM-19, "INTAKE MANIFOLD COLLECTOR" .
–Remove intake manifold. Refer to EM-24, "INTAKE MANIFOLD" .
–Remove fuel injector and fuel tube assembly. Refer to EM-45, "FUEL INJECTOR AND FUEL TUBE" .
–Remove ignition coil. Refer to EM-42, "IGNITION COIL" .
–Remove rocker cover. Refer to EM-51, "ROCKER COVER" .
–Remove exhaust manifold. Refer to EM-26, "EXHAUST MANIFOLD" .
–Other removable brackets.
NOTE:
The figure shows an example of widely use engine stand that
can hold mating surface of transmission with drive plate
removed.
CAUTION:
Before removing the hanging chains, make sure the
engine stand is stable and there is no risk of overturning.
4. Drain engine oil. Refer to LU-9, "
Changing Engine Oil" .
SEM760G
PBIC0085E

EM-126
[VQ35DE]
CYLINDER BLOCK
Revision: 2006 January2006 M35/M45
5. Drain engine coolant by removing water drain plugs from cylin-
der block both sides at “B” and “C” and cylinder block front side
at “A” as shown in the figure.
6. Remove the following parts:
Oil pans (lower and upper); Refer to EM-29, "OIL PAN AND OIL STRAINER" .
Front and rear timing chain case; Refer to EM-64, "TIMING CHAIN" .
Cylinder head; Refer to EM-101, "CYLINDER HEAD" .
7. Remove knock sensor.
CAUTION:
Carefully handle sensor avoiding shocks.
8. Remove pilot converter using the pilot bushing puller (SST) as
necessary.
9. Remove rear oil seal retainer.
Remove by inserting a screwdriver between main bearing cap and rear oil seal retainer.
CAUTION:
If rear oil seal retainer is removed, replace it with new one.
NOTE:
Regard both rear oil seal and retainer as an assembly.
10. Remove baffle plate from main bearing beam (2WD models).
11. Remove piston and connecting rod assembly with the following procedure:
Before removing piston and connecting rod assembly, check the connecting rod side clearance. Refer
to EM-140, "
CONNECTING ROD SIDE CLEARANCE" .
CAUTION:
Be careful not to drop connecting rod bearing, and to scratch the surface.
a. Position crankshaft pin corresponding to connecting rod to be removed onto the bottom dead center.
PBIC2610E
SEM005G

EM-128
[VQ35DE]
CYLINDER BLOCK
Revision: 2006 January2006 M35/M45
c. Push out piston pin with stick of outer diameter approximately 20
mm (0.79 in).
15. Remove main bearing cap bolts.
NOTE:
Use TORX socket (size E14).
Before loosening main bearing cap bolts, measure the crankshaft end play. Refer to EM-140, "CRANK-
SHAFT END PLAY" .
Loosen main bearing cap bolts in the reverse order shown in
the figure in several different steps.
16. Remove main bearing beam.
17. Remove main bearing caps.
CAUTION:
Be careful not to drop main bearing, and to scratch the sur-
face.
Using main bearing cap bolts, remove main bearing cap while
shaking it back-and-forth.
18. Remove crankshaft.
19. Remove main bearings and thrust bearings from cylinder block and main bearing caps.
CAUTION:
Be careful not to drop main bearing, and to scratch the surface.
Identify installation positions, and store them without mixing them up.
20. Remove oil jet.
ASSEMBLY
1. Fully air-blow engine coolant and engine oil passages in cylinder block, cylinder bore and crankcase to
remove any foreign material.
CAUTION:
Use a goggles to protect your eye.
PBIC0262E
PBIC1800E
EMQ0195D

CYLINDER BLOCK
EM-129
[VQ35DE]
C
D
E
F
G
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Revision: 2006 January2006 M35/M45
2. Install each plug to cylinder block as shown in the figure.
Apply sealant to the thread of water drain plugs “A”, “B” and
“C”.
Use Genuine RTV Silicone Sealant or equivalent. Refer to
GI-48, "
RECOMMENDED CHEMICAL PRODUCTS AND
SEALANTS" .
Apply sealant to the thread of plugs “D” and “E”.
Use Genuine High Strength Thread Locking Sealant or
equivalent. Refer to GI-48, "
RECOMMENDED CHEMICAL
PRODUCTS AND SEALANTS" .
Apply sealant to the thread of plug “F”.
Use Anaerobic Liquid Gasket or equivalent. Refer to GI-
48, "RECOMMENDED CHEMICAL PRODUCTS AND SEAL-
ANTS" .
NOTE:
For Canada, “F” in the figure is not plug but block heater.
Refer to EM-123, "
Components" .
Replace washers with new one.
Tighten each plug as specified below.
3. Install oil jet.
Insert oil jet dowel pin into cylinder block dowel pin hole, and
tighten mounting bolts.
4. Install main bearings and thrust bearings as follows:
CAUTION:
Be careful not to drop main bearing, and to scratch the surface.
a. Remove dust, dirt, and engine oil on bearing mating surfaces of cylinder block and main bearing caps.
PBIC2610E
Part Washer Tightening torque
A No 9.8 Nꞏm (1.0 kg-m, 87 in-lb)
B No 19.6 Nꞏm (2.0 kg-m, 14 ft-lb)
C No 19.6 Nꞏm (2.0 kg-m, 14 ft-lb)
D Yes 12.3 Nꞏm (1.3 kg-m, 9 ft-lb)
E Yes 62 Nꞏm (6.3 kg-m, 46 ft-lb)
F Yes 62 Nꞏm (6.3 kg-m, 46 ft-lb)
PBIC0898E

EM-130
[VQ35DE]
CYLINDER BLOCK
Revision: 2006 January2006 M35/M45
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 crankshaft
arm (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 bear-
ing surface (inside). Do not apply engine oil to the back sur-
face, 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.
5. Install crankshaft to cylinder block.
While turning crankshaft by hand, check that it turns smoothly.
6. Install main bearing cap.
Main bearing caps are identified by identification mark cast on
them. For installation, face front mark to front side.
NOTE:
Main bearing cap cannot be replaced as a single part, because it
is machined together with cylinder block.
7. Install main bearing beam.
Install main bearing beam with front mark facing downward
(oil pan side) and front mark facing front of the engine.
PBIC0807E
PBIC2489E
SEM456G
PBIC0881E

CYLINDER BLOCK
EM-131
[VQ35DE]
C
D
E
F
G
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MA
EM
Revision: 2006 January2006 M35/M45
8. Install main bearing cap bolts in numerical order as shown in the
figure as follows:
a. Inspect the outer diameter of main bearing cap bolt. Refer to
EM-148, "
MAIN BEARING CAP BOLT OUTER DIAMETER" .
b. Apply new engine oil to threads and seat surfaces of main bear-
ing cap bolts.
c. Tighten main bearing cap bolts in several different steps.
d. Turn all main bearing cap bolts 90 degrees clockwise (Angle
tightening).
CAUTION:
Use the angle wrench [SST: KV10112100 (BT8653-A)] to
check tightening angle. Do not make judgment by visual
inspection.
After installing main bearing cap bolts, make sure that crank-
shaft can be rotated smoothly by hand.
Check the crankshaft end play. Refer to EM-140, "CRANK-
SHAFT END PLAY" .
9. Install piston to connecting rod as follows:
a. Using a snap ring pliers, install new snap ring to the groove of piston rear side.
Insert it fully into groove to install.
b. Install piston to connecting rod.
Using an 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 158F)]. 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
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 damage
piston.
Be careful not to damage piston rings by expending them
excessively.: 35.3 Nꞏm (3.6 kg-m, 26 ft-lb)
PBIC1800E
PBIC0921E
SEM838F
PBIC0087E