Infiniti FX35 / FX45. Manual — part 645

OIL SEAL

EM-97

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OIL SEAL

Removal and Installation of Valve Oil Seal

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REMOVAL

1.

Remove camshaft relating to valve oil seal to be removed. Refer to

EM-83, "Component"

.

2.

Remove valve lifters. Refer to

EM-83, "Component"

.

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.

Removal and Installation of Front Oil Seal

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REMOVAL

1.

Remove the following parts:
• Undercover
• Drive belts: Refer to

EM-15, "Removal and Installation"

.

• Crankshaft pulley: Refer to

EM-64, "Component"

.

PBIC1803E

PBIC0884E

Intake and exhaust

: 14.3 - 14.9 mm (0.563 - 0.587 in)

PBIC2769E

EM-98

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OIL SEAL

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 Seal

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REMOVAL

1.

Remove oil pan (upper). Refer to

EM-30, "Component (2WD Models)"

.

2.

Remove transmission assembly. Refer to

AT-241, "Removal and Installation (2WD Models)"

.

3.

Remove drive plate. Refer to

EM-122, "Component"

.

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.

SEM829E

SEM715A

SEM829E

SEM830E

OIL SEAL

EM-99

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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
(commercial service tool) to rear oil seal retainer as shown in the
figure.
Use Genuine RTV Silicone Sealant or equivalent. Refer to

GI-44, "Recommended Chemical Product and Sealant"

.

• Assembly should be done within 5 minutes after coating.

4.

Install rear oil seal retainer to cylinder block. Refer to

EM-122, "Component"

.

• Make sure the garter spring is in position and seal lips not inverted.

5.

Install in the reverse order of removal after this step.

PBIC2661E

EM-100

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CYLINDER HEAD

CYLINDER HEAD

On-Vehicle Service

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CHECKING COMPRESSION PRESSURE

1.

Warm up engine thoroughly. Then, stop it.

2.

Release fuel pressure. Refer to

EC-87, "Fuel Pressure Check"

.

3.

Disconnect fuel pump fuse to avoid fuel injection during mea-
surement.

4.

Remove engine cover with power tool. Refer to

EM-19, "Component"

.

5.

Remove ignition coil and spark plug from each cylinder. Refer to

EM-42, "Component"

and

EM-43, "Com-

ponent"

.

6.

Connect engine tachometer (not required in use of CONSULT-III).

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.

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/cm

2

, 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