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![INFINITI M35 2006 Factory Service Manual EM-98
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OIL SEAL
Revision: 2006 January2006 M35/M45
OIL SEALPFP:00100
Removal and Installation of Valve Oil SealNBS004NO
REMOVAL
1. Remove camshaft relating to valve oil seal to be removed. Ref INFINITI M35 2006 Factory Service Manual EM-98
[VQ35DE]
OIL SEAL
Revision: 2006 January2006 M35/M45
OIL SEALPFP:00100
Removal and Installation of Valve Oil SealNBS004NO
REMOVAL
1. Remove camshaft relating to valve oil seal to be removed. Ref](/manual-img/42/57023/w960_57023-3160.png)
EM-98
[VQ35DE]
OIL SEAL
Revision: 2006 January2006 M35/M45
OIL SEALPFP:00100
Removal and Installation of Valve Oil SealNBS004NO
REMOVAL
1. Remove camshaft relating to valve oil seal to be removed. Refer to EM-84, "CAMSHAFT" .
2. Remove valve lifters. Refer to EM-84, "
CAMSHAFT" .
3. Turn crankshaft until the cylinder requiring new oil seals is at TDC. This will prevent valve from dropping
into cylinder.
4. Remove valve collet.
Compress valve spring with the valve spring compressor, the
attachment, the adapter (SST). Remove valve collet with a
magnet hand.
CAUTION:
When working, take care not to damage valve lifter holes.
5. Remove valve spring retainer, and valve spring.
6. Remove valve oil seal using the valve oil seal puller (SST).
INSTALLATION
1. Apply new engine oil on new valve oil seal joint and seal lip.
2. Using the valve oil seal drift (SST), press fit valve seal to height
“H” shown in figure.
NOTE:
Dimension “H”: Height measured before valve spring seat instal-
lation
3. Install in the reverse order of removal after this step.
PBIC1803E
PBIC0884E
Intake and exhaust : 14.3 - 14.9 mm (0.563 - 0.587 in)
PBIC2769E
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![INFINITI M35 2006 Factory Service Manual OIL SEAL
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Removal and Installation of Front Oil SealNBS004NP
REMOVAL
1. Remove the following parts:
Front engine undercover ( INFINITI M35 2006 Factory Service Manual OIL SEAL
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Removal and Installation of Front Oil SealNBS004NP
REMOVAL
1. Remove the following parts:
Front engine undercover (](/manual-img/42/57023/w960_57023-3161.png)
OIL SEAL
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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
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![INFINITI M35 2006 Factory Service Manual EM-100
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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 mountin INFINITI M35 2006 Factory Service Manual 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 mountin](/manual-img/42/57023/w960_57023-3162.png)
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
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CYLINDER HEADPFP:11041
On-Vehicle ServiceNBS004NR
CHECKING COMPRESSION PRESSURE
1. Warm up engine thoroughly. INFINITI M35 2006 Factory Service Manual CYLINDER HEAD
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On-Vehicle ServiceNBS004NR
CHECKING COMPRESSION PRESSURE
1. Warm up engine thoroughly.](/manual-img/42/57023/w960_57023-3163.png)
CYLINDER HEAD
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On-Vehicle ServiceNBS004NR
CHECKING COMPRESSION PRESSURE
1. Warm up engine thoroughly. Then, stop it.
2. Release fuel pressure. Refer to EC-98, "
FUEL PRESSURE RELEASE" .
3. Disconnect fuel pump fuse to avoid fuel injection during mea-
surement.
4. Remove engine cover with power tool. Refer to EM-19, "
INTAKE MANIFOLD COLLECTOR" .
5. Remove ignition coil and spark plug from each cylinder. Refer to EM-42, "
IGNITION COIL" and EM-43,
"SPARK PLUG (PLATINUM-TIPPED TYPE)" .
6. Connect engine tachometer (not required in use of CONSULT-ll).
7. Install compression gauge with an adapter (commercial service
tool) onto spark plug hole.
Use the adapter whose picking up end inserted to spark plug
hole is smaller than 20 mm (0.79 in) in diameter. Otherwise, it
may be caught by cylinder head during removal.
8. With accelerator pedal fully depressed, turn ignition switch to “START” for cranking. When the gauge
pointer stabilizes, read the compression pressure and the engine rpm. Perform these steps to check each
cylinder.
Compression pressure:
Unit: kPa (kg/cm2 , psi) /rpm
CAUTION:
Always use a fully changed battery to obtain the specified engine speed.
SBIA0466E
PBIC0900E
SBIA0533E
Standard Minimum Deference limit between cylinders
1,275 (13.0, 185) / 300 981 (10.0, 142) / 300 98 (1.0, 14) / 300
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![INFINITI M35 2006 Factory Service Manual EM-102
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CYLINDER HEAD
Revision: 2006 January2006 M35/M45
If the engine speed is out of the specified range, check battery liquid for proper gravity. Check the
engine speed aga INFINITI M35 2006 Factory Service Manual EM-102
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CYLINDER HEAD
Revision: 2006 January2006 M35/M45
If the engine speed is out of the specified range, check battery liquid for proper gravity. Check the
engine speed aga](/manual-img/42/57023/w960_57023-3164.png)
EM-102
[VQ35DE]
CYLINDER HEAD
Revision: 2006 January2006 M35/M45
If the engine speed is out of the specified range, check battery liquid for proper gravity. Check the
engine speed again with normal battery gravity.
If compression pressure is below minimum value, check valve clearances and parts associated with
combustion chamber (valve, valve seat, piston, piston ring, cylinder bore, cylinder head, cylinder head
gasket). After the checking, measure compression pressure again.
If some cylinder has low compression pressure, pour small amount of engine oil into the spark plug hole
of the cylinder to re-check it for compression.
–If the added engine oil improves the compression, piston rings may be worn out or damaged. Check
piston rings and replace if necessary.
–If the compression pressure remains at low level despite the addition of engine oil, valves may be mal-
functioning. Check valves for damage. Replace valve or valve seat accordingly.
If two adjacent cylinders have respectively low compression pressure and their compression remains
low even after the addition of engine oil, cylinder head gaskets are leaking. In such a case, replace cyl-
inder head gaskets.
9. After inspection is completed, install removed parts.
10. Start the engine, and make sure that the engine runs smoothly.
11. Perform trouble diagnosis. If DTC appears, erase it. Refer to EC-100, "
TROUBLE DIAGNOSIS" .
ComponentsNBS004NS
Removal and InstallationNBS004NT
REMOVAL
1. Remove camshaft. Refer to EM-84, "CAMSHAFT" .
NOTE:
It is also possible to perform the following steps 2 and 3 just before removing camshaft.
1. Engine rear lower slinger 2. Cylinder head (left bank) 3. Cylinder head bolt
4. Cylinder head (right bank) 5. Cylinder head gasket (right bank)6. Cylinder head gasket (left bank)
7. Oil level gauge guide
SBIA0581E
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2. Temporarily fit front suspension member to support engine. Refer to FSU-6, "FRONT SUSPENSIO INFINITI M35 2006 Factory Service Manual CYLINDER HEAD
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2. Temporarily fit front suspension member to support engine. Refer to FSU-6, "FRONT SUSPENSIO](/manual-img/42/57023/w960_57023-3165.png)
CYLINDER HEAD
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2. Temporarily fit front suspension member to support engine. Refer to FSU-6, "FRONT SUSPENSION
ASSEMBLY" (2WD) or FSU-23, "FRONT SUSPENSION ASSEMBLY" (AWD).
CAUTION:
Temporary fitting means the status that engine is adequately stable though the hoist is released
from hanging.
NOTE:
At the time of the start of this procedure front suspension member is removed, and cylinder head is
hanged by hoist with the engine slinger installed.
3. Release the hoist from hanging, then remove the engine slinger.
4. Remove the following parts:
Fuel tube and fuel injector assembly; Refer to EM-45, "FUEL INJECTOR AND FUEL TUBE" .
Intake manifold; Refer to EM-24, "INTAKE MANIFOLD" .
Exhaust manifold; Refer to EM-26, "EXHAUST MANIFOLD" .
Water inlet and thermostat assembly; Refer to CO-29, "WATER INLET AND THERMOSTAT ASSEM-
BLY" .
Water outlet, water pipe and heater pipe; Refer to CO-31, "WATER OUTLET AND WATER PIPING" .
5. Remove cylinder head bolts in reverse order as shown in the fig-
ure with cylinder head bolt wrench (commercial service tool) and
power tool to remove cylinder heads (right and left banks).
6. Remove cylinder head gaskets.
INSPECTION AFTER REMOVAL
Cylinder Head Bolts Outer Diameter
Cylinder head bolts are tightened by plastic zone tightening
method. Whenever the size difference between “d1” and “d2”
exceeds the limit, replace them with new one.
If reduction of outer diameter appears in a position other than
“d2”, use it as “d2” point.
PBIC2057E
Limit (“d1” – “d2”) : 0.11 mm (0.0043 in)
PBIC2480E
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![INFINITI M35 2006 Factory Service Manual EM-104
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CYLINDER HEAD
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Cylinder Head Distortion
NOTE:
When performing this inspection, cylinder block distortion should be also checking. Refer to EM-143, INFINITI M35 2006 Factory Service Manual EM-104
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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,](/manual-img/42/57023/w960_57023-3166.png)
EM-104
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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
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e. Turn all cylinder head bolts 90 degrees clockwise (angle tighten-
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CAUTION:
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e. Turn all cylinder head bolts 90 degrees clockwise (angle tighten-
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CAUTION:
Check the tightening a](/manual-img/42/57023/w960_57023-3167.png)
CYLINDER HEAD
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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 —