lock INFINITI M35 2006 Factory Service Manual

CAMSHAFT
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Revision: 2006 January2006 M35/M45
Summary of the inspection items:
* Transmission/transaxle/CVT fluid, power steering fluid, brake fluid, etc.
Va l v e C l e a r a n c eNBS004NN
INSPECTION
Perform inspection as follows after removal, installation or replacement of camshaft or valve-related parts, or if
there is unusual engine conditions regarding valve clearance.
In cases of removing/installing or replacing camshaft and valve-
related parts, or of unusual engine conditions due to changes in
valve clearance (found malfunctions during stating, idling or causing
noise), perform inspection as follows:
1. Remove rocker covers (right and left bank). Refer to EM-51, "
ROCKER COVER" .
2. Measure the valve clearance as follows:
a. Set No. 1 cylinder at TDC of its compression stroke.
Rotate crankshaft pulley clockwise to align timing mark
(grooved line without color) with timing indicator.
Make sure that intake and exhaust cam nose on No. 1 cylin-
der (engine front side of right bank) are located as shown in
the figure.
If not, turn crankshaft one revolution (360 degrees) and align
as shown in the figure.
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
SEM713A
KBIA1717J
SEM418G

EM-94
[VQ35DE]
CAMSHAFT
Revision: 2006 January2006 M35/M45
b. Use a feeler gauge, measure the clearance between valve lifter
and camshaft.
Valve clearance:
Unit: mm (in)
*: Approximately 80
C (176F)
By referring to the figure, measure the valve clearances at
locations marked “
” as shown in the table below (locations
indicated in the figure).
No. 1 cylinder at compression TDC
c. Rotate crankshaft by 240 degrees clockwise (when viewed from engine front) to align No. 3 cylinder at
TDC of its compression stroke.
NOTE:
To align cylinder No.3 with the compression top dead center,
place matching marks (A) on the crank pulley (1) side and on
the cylinder block side at a point 240
counterclockwise from
the compression top dead center using the hex head of the
crank pulley mounting bolt as aguide. (with crankshaft pulley
bolt with four marks).
SEM139D
Items Cold Hot * (reference data)
Intake 0.26 - 0.34 (0.010 - 0.013) 0.304 - 0.416 (0.012 - 0.016)
Exhaust 0.29 - 0.37 (0.011 - 0.015) 0.308 - 0.432 (0.012 - 0.016)
Measuring position (right bank) No. 1 CYL. No. 3 CYL. No. 5 CYL.
No. 1 cylinder at
compression TDCEXH
INT
Measuring position (left bank) No. 2 CYL. No. 4 CYL. No. 6 CYL.
No. 1 cylinder at
compression TDCINT

EXH

PBIC2054E
PBIC4628J

CAMSHAFT
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Revision: 2006 January2006 M35/M45
Crankshaft pulley mounting bolt flange has a stamped line
every 60 degrees. They can be used as a guide to rotation
angle. (with crankshaft pulley bolt with six–marks).
By referring to the figure, measure the valve clearances at
locations marked “
” as shown in the table below (locations
indicated in the figure).
No. 3 cylinder at compression TDC
d. Rotate crankshaft by 240 degrees clockwise (when viewed from engine front) to align No. 5 cylinder at
TDC of compression stroke.
NOTE:
To align cylinder No.5 with the compression top dead center,
place matching marks (A) on the crank pulley (1) side and on
the cylinder block side at a point 240
counterclockwise from
the compression top dead center using the hex head of the
crank pulley mounting bolt as aguide. (with crankshaft pulley
bolt with four marks).
SEM751G
Measuring position (right bank) No. 1 CYL. No. 3 CYL. No. 5 CYL.
No. 3 cylinder at
compression TDCEXH
INT
Measuring position (left bank) No. 2 CYL. No. 4 CYL. No. 6 CYL.
No. 3 cylinder at
compression TDCINT

EXH
PBIC2055E
PBIC4628J

OIL SEAL
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Revision: 2006 January2006 M35/M45
Removal and Installation of Front Oil SealNBS004NP
REMOVAL
1. Remove the following parts:
Front engine undercover (power tool)
Drive belts; Refer to EM-15, "DRIVE BELTS" .
Crankshaft pulley; Refer to EM-64, "TIMING CHAIN" .
2. Remove front oil seal using a suitable tool.
CAUTION:
Be careful not to damage front timing chain case and crank-
shaft.
INSTALLATION
1. Apply new engine oil to both oil seal lip and dust seal lip of new front oil seal.
2. Install front oil seal.
Install front oil seal so that each seal lip is oriented as shown
in the figure.
Using a suitable drift, press-fit until the height of front oil seal
is level with the mounting surface.
–Suitable drift: outer diameter 60 mm (2.36 in), inner diameter
50 mm (1.97 in).
Make sure the garter spring is in position and seal lips not
inverted
CAUTION:
Be careful not to damage front timing chain case and
crankshaft.
Press-fit straight and avoid causing burrs or tilting oil
seal.
3. Install in the reverse order of removal after this step.
Removal and Installation of Rear Oil SealNBS004NQ
REMOVAL
1. Remove oil pan (upper). Refer to EM-29, "OIL PAN AND OIL STRAINER" .
2. Remove transmission assembly. Refer to AT- 2 7 1 , "
TRANSMISSION ASSEMBLY" .
3. Remove drive plate. Refer to EM-123, "
CYLINDER BLOCK" .
SEM829E
SEM715A
SEM829E

EM-100
[VQ35DE]
OIL SEAL
Revision: 2006 January2006 M35/M45
4. Use a seal cutter (SST) to cut away liquid gasket and remove
rear oil seal retainer.
CAUTION:
Be careful not to damage mounting surface.
NOTE:
Regard both rear oil seal and retainer as an assembly.
INSTALLATION
1. Remove old liquid gasket on mating surfaces of cylinder block and oil pan (upper) using a scraper.
2. Apply new engine oil to both oil seal lip and dust seal lip of new rear oil seal retainer.
3. Apply a continuous bead of liquid gasket with the tube presser
[SST: WS39930000 ( — )] to rear oil seal retainer as shown
in the figure.
Use Genuine RTV Silicone Sealant or equivalent. Refer to
GI-48, "
RECOMMENDED CHEMICAL PRODUCTS AND
SEALANTS" .
Assembly should be done within 5 minutes after coating.
4. Install rear oil seal retainer to cylinder block. Refer to EM-123, "
CYLINDER BLOCK" .
Make sure the garter spring is in position and seal lips not inverted.
5. Install in the reverse order of removal after this step.
SEM830E
PBIC2661E

EM-104
[VQ35DE]
CYLINDER HEAD
Revision: 2006 January2006 M35/M45
Cylinder Head Distortion
NOTE:
When performing this inspection, cylinder block distortion should be also checking. Refer to EM-143, "
CYLIN-
DER BLOCK DISTORTION" .
1. Using a scraper, wipe off oil, scale, gasket, sealant and carbon deposits from surface of cylinder head.
CAUTION:
Do not allow gasket fragments to enter engine oil or engine coolant passages.
2. At each of several locations on bottom surface of cylinder head,
measure the distortion in six directions.
If it exceeds the limit, replace cylinder head.
INSTALLATION
1. Install new cylinder head gaskets.
2. Turn crankshaft until No. 1 piston is set at TDC.
Crankshaft key should line up with the right bank cylinder cen-
ter line as shown in the figure.
3. Install cylinder head follow the steps below to tighten cylinder
head bolts in numerical order as shown in the figure with cylin-
der head bolts wrench (commercial service tool).
CAUTION:
If cylinder head bolts re-used, check their outer diameters
before installation. Refer toEM-103, "
Cylinder Head Bolts
Outer Diameter" .
a. Apply new engine oil to threads and seat surfaces of cylinder
head bolts.
b. Tighten all cylinder head bolts.
c. Completely loosen all cylinder head bolts.
CAUTION:
In step “c”, loosen bolts in reverse order of that indicated in
the figure.
d. Tighten all cylinder head bolts.Limit : 0.1 mm (0.004 in)
SEM861E
SEM532G
: 98.1 Nꞏm (10 kg-m, 72 ft-lb)
: 0 Nꞏm (0 kg-m, 0 ft-lb)
: 39.2 Nꞏm (4.0 kg-m, 29 ft-lb)
PBIC2057E

CYLINDER HEAD
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Revision: 2006 January2006 M35/M45
e. Turn all cylinder head bolts 90 degrees clockwise (angle tighten-
ing).
CAUTION:
Check the tightening angle by using the angle wrench
(SST). Avoid judgment by visual inspection without SST.
Check tightening angle indicated on the angle wrench indica-
tor plate.
f. Turn all cylinder head bolts 90 degrees clockwise again (angle
tightening).
4. After installing cylinder head, measure distance between front
end faces of cylinder block and cylinder head (left and right
banks).
If measured value is out of the standard, re-install cylinder
head.
5. Install in the reverse order of removal after this step.
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.
PBIC0888E
Standard : 14.1 - 14.9 mm (0.555 - 0.587 in)
EMQ0662D
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-108
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CYLINDER HEAD
Revision: 2006 January2006 M35/M45
8. Install valve collet.
Compress valve spring with the valve spring compressor, the
attachment and the adapter (SST). Install valve collet with a
magnet hand.
CAUTION:
When working, take care not to damage valve lifter holes.
Tap valve stem edge lightly with plastic hammer after installa-
tion to check its installed condition.
9. Install valve lifter.
Install it in the original position.
10. Install spark plug tube.
Press-fit spark plug tube as follows:
a. Remove old locking sealant adhering to cylinder head mounting hole.
b. Apply sealant to area within approximately 12 mm (0.47 in) from edge of spark plug tube press-fit side.
Use Genuine High Strength Locking Sealant or equivalent. Refer to GI-48, "
RECOMMENDED
CHEMICAL PRODUCTS AND SEALANTS" .
c. Using drift, press-fit spark plug tube so that its height “H” is as
specified in the figure.
CAUTION:
When press-fitting, take care not to deform spark plug
tube.
After press-fitting, wipe off liquid gasket protruding onto
cylinder-head upper face.
11. Install spark plug with spark plug wrench (commercial service tool).
Inspection after DisassemblyNBS004NV
VALVE DIMENSIONS
Check the dimensions of each valve. For the dimensions, refer to EM-154, "Valve Dimensions" .
If dimensions are out of the standard, replace valve and check valve seat contact. Refer to EM-110,
"VA LV E S E AT C O N TA C T" .
VALVE GUIDE CLEARANCE
Valve Stem Diameter
Measure the diameter of valve stem with micrometer.
Valve Guide Inner Diameter
Measure the inner diameter of valve guide with bore gauge.
PBIC1803E
Standard press-fit height “H”:
: 38.1 - 39.1 mm (1.500 - 1.539 in)
PBIC2638E
Standard
Intake : 5.965 - 5.980 mm (0.2348 - 0.2354 in)
Exhaust : 5.955 - 5.970 mm (0.2344 - 0.2350 in)
SEM938C

EM-116
[VQ35DE]
ENGINE ASSEMBLY
Revision: 2006 January2006 M35/M45
To protect rocker cover against damage caused by tilting of
engine slinger, insert spacer between cylinder head and
engine rear lower slinger, in direction shown in the figure.
NOTE:
Spacer is a component part of engine rear upper slinger
assembly.
2. Remove power steering oil pump from engine side. Refer to PS-29, "
POWER STEERING OIL PUMP" .
3. Remove engine mounting insulators (RH and LH) under side nuts with power tool.
4. Lift with hoist and separate the engine and the transmission assembly from front suspension member.
CAUTION:
Before and during this lifting, always make sure that any harnesses are left connected.
Avoid damage to and oil/grease smearing or spills onto engine mounting insulator.
5. Remove alternator. Refer to SC-23, "
CHARGING SYSTEM" .
6. Remove starter motor. Refer to SC-10, "
STARTING SYSTEM" .
7. Separate the engine from the transmission assembly. Refer to AT- 2 7 1 , "
TRANSMISSION ASSEMBLY" .
8. Remove each engine mounting insulator and each engine mounting bracket from the engine with power
tool.
INSTALLATION
Note the following, and install in the reverse order of removal.
Do not allow engine mounting insulator to be damage and careful no oil gets on it.
For a location with a positioning pin, insert it securely into hole of mating part.
For a part with a specified installation orientation, refer to component figure in EM-29, "Components (2WD
Models)" .
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).
Make sure all engine mounting insulators are seated properly, then tighten mounting nuts.
Tighten rear engine mounting member bolts in numerical order
as shown in the figure.
KBIA1017E
PBIC2062E
Vehicle front
KBIA3557J

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 —