NISSAN TEANA 2003 Service Manual

OIL SEAL
EM-63
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Removal and Installation of Front Oil SealBBS00599
REMOVAL
1. Remove the following parts.

Undercover and splash guard (RH)

RH front road wheel and tire

Drive belt; Refer to EM-14, "DRIVE BELTS" .

Crankshaft pulley; Refer to EM-53, "TIMING CHAIN" .
2. Remove front oil seal with suitable tool.
CAUTION:
Be careful not to damage front cover and crankshaft.
INSTALLATION
1. Apply new engine oil to new front oil seal joint surface and seal lip.
2. Install front oil seal so that each seal lip is oriented as shown in
the figure.

Press-fit front oil seal until it is flush with front end surface of
front cover with suitable tool.
CAUTION:

Be careful not to damage front cover and crankshaft.

Press-fit oil seal straight to avoid causing burrs or tilt-
ing.
3. Install in the reverse order of removal after this step.
SEM829E
SEM715A
SBIA0266E

EM-64
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OIL SEAL

Removal and Installation of Rear Oil SealBBS0059A
REMOVAL
1. Remove engine assembly from vehicle, and separate front suspension member and transaxle from
engine. Refer to EM-77, "
ENGINE ASSEMBLY" .
2. Install engine sub-attachment with engine stand shaft [SST: KV10115300 and KV10106500] to right side
of cylinder block, then lift engine, and mount it onto engine stand [SST: ST0501S000]. Refer to EM-81,
"CYLINDER BLOCK" .
3. Remove drive plate. Refer to EM-81, "
CYLINDER BLOCK" .
4. Remove rear oil seal with suitable tool.
CAUTION:
Be careful not to damage crankshaft and cylinder block.
INSTALLATION
1. Apply new engine oil to new rear oil seal joint surface and seal lip.
2. Install rear oil seal so that each seal lip is oriented as shown in
the figure.

Press in rear oil seal to the position as shown in the figure.

Press-fit rear oil seal with suitable drift [outside diameter 102
mm (4.02 in), inside diameter 86 mm (3.39 in)].
CAUTION:

Be careful not to damage crankshaft and cylinder
block.

Press-fit oil seal straight to avoid causing burrs or tilt-
ing.

Do not touch grease applied onto oil seal lip.
3. Install in the reverse order of removal after this step.
SEM715A
SBIA0281E
SBIA0280E

CYLINDER HEAD
EM-65
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CYLINDER HEADPFP:11041
On-Vehicle ServiceBBS0059B
CHECKING COMPRESSION PRESSURE
1. Warm up engine thoroughly. Then, stop it.
2. Release fuel pressure. Refer to EC-49, "
FUEL PRESSURE RELEASE" .
3. Disconnect fuel pump fuse to avoid fuel injection during mea-
surement.
4. Remove engine cover. Refer to EM-19, "
INTAKE MANIFOLD" .
5. Remove ignition coil and spark plug from each cylinder. Refer to EM-31, "
IGNITION COIL" and EM-32,
"SPARK PLUG(PLATINUM-TIPPED TYPE)" .
6. Connect engine tachometer (not required in use of CONSULT-II).
7. Install compression tester with adapter onto spark plug hole.

Use compression gauge 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 engine rpm. Perform these steps to check each cyl-
inder.
Compression pressure:
Unit: kPa (bar, kg/cm2 , psi) /rpm
CAUTION:
Always use a fully changed battery to obtain specified engine speed.
PBIB2110E
PBIC2420E
SBIA0533E
Standard Minimum Differential limit between cylinders
1,190 (11.9, 12.1, 173) / 250 990 (9.9, 10.1, 144) / 250 100 (1.0, 1.0, 14) / 250

EM-66
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CYLINDER HEAD


If the engine speed is out of specified range, check battery liquid for proper gravity. Check 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 the compression pressure again.

If some cylinders have 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 gasket is leaking. In such a case, replace cylin-
der head gasket.
9. After inspection is completed, install removed parts.
10. Start engine, and confirm that engine runs smoothly.
11. Perform trouble diagnosis. If DTC appears, erase it. Refer to EC-52, "
TROUBLE DIAGNOSIS" .
Removal and InstallationBBS0059C
REMOVAL
1. Release fuel pressure. Refer to EC-49, "FUEL PRESSURE RELEASE" .
2. Drain engine coolant and engine oil. Refer to CO-10, "
Changing Engine Coolant" and LU-9, "Changing
Engine Oil" .
CAUTION:

Perform this step when engine is cold.

Do not spill engine coolant and engine oil on drive belt.
3. Remove the following components and related parts.

Exhaust manifold and three way catalyst assembly; Refer to EM-23, "EXHAUST MANIFOLD AND
THREE WAY CATALYST" .

Intake manifold and fuel tube assembly; Refer to EM-19, "INTAKE MANIFOLD" .

Water control valve and housing (water outlet); Refer to CO-24, "THERMOSTAT AND WATER CON-
TROL VALVE" .
1. Cylinder head assembly 2. Cylinder head gasket 3. Engine cover bracket (rear)
4. Cylinder head bolt
PBIC2424E

CYLINDER HEAD
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NOTE:
Can be removed and installed even when assembled with cylinder head.
4. Remove front cover and timing chain. Refer to EM-53, "
TIMING CHAIN" .
5. Remove camshafts. Refer to EM-41, "
CAMSHAFT" .
6. Remove cylinder head loosening bolts in reverse order as
shown in the figure.

Using the following tool, loosen cylinder head bolts.
NOTE:
There are two types of cylinder head bolt because of parallel
manufacture.
7. Remove cylinder head gasket.
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 a new one.

If reduction of outer diameter appears in a position other than
“d2”, use it as “d2” point.
NOTE:
When replacing any cylinder head bolts, it is possible to use them
with mixing flange bolt and bolt with washer.
Cylinder Head Distortion
NOTE:
When performing this inspection, cylinder block distortion should be also checking. Refer to EM-102, "
CYLIN-
DER BLOCK DISTORTION" .
1. Wipe off engine oil and remove water scale (like deposit), gasket, sealant, carbon, etc. with scraper.
CAUTION:
Use utmost care not to allow gasket debris to enter passages for engine oil or engine coolant.
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.Bolt with washer
: Hexagonal wrench [size 10 mm (0.39 in)]
Flange bolt
: TORX socket (size E20)
KBIA0058E
Limit (“d1” – “d2”): 0.23 mm (0.0091 in)
SBIA0269E
Limit : 0.1 mm (0.004 in)
PBIC0075E

EM-68
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CYLINDER HEAD

INSTALLATION
1. Install new cylinder head gasket.
2. Tighten cylinder head bolts in numerical order as shown in the
figure with the following procedure to install cylinder head.
CAUTION:
If cylinder head bolts are re-used, check their outer diame-
ters before installation. Refer to EM-67, "
Cylinder Head
Bolts Outer Diameter" .
a. Apply new engine oil to threads and seating surface of mounting
bolts.
b. Tighten all bolts.
c. Turn all bolts 60 degrees clockwise (angle tightening).
CAUTION:
Check and confirm the tightening angle by using angle
wrench (SST) or protractor. Avoid judgment by visual
inspection without the tool.
d. Completely loosen.
CAUTION:
In this step, loosen bolts in reverse order of that indicated
in the figure.
e. Tighten all bolts.
f. Turn all bolts 75 degrees clockwise (angle tightening).
g. Turn all bolts 75 degrees clockwise again (angle tightening).
3. 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-14, "
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. : 50.0 N·m (5.1 kg-m, 37 ft-lb)
: 0 N·m (0 kg-m, 0 ft-lb)
: 39.2 N·m (4.0 kg-m, 29 ft-lb)
KBIA0058E
KBIA0059E

CYLINDER HEAD
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Summary of the inspection items:
* Transmission/transaxle/CVT fluid, power steering fluid, brake fluid, etc.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-70
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CYLINDER HEAD

Disassembly and AssemblyBBS0059D
DISASSEMBLY
1. Remove spark plug with spark plug wrench (commercial service tool).
2. Remove valve lifter.

Identify installation positions, and store them without mixing them up.
3. Remove valve collet.

Compress valve spring with valve spring compressor, attach-
ment and adapter (SST). Remove valve collet with magnet
hand.
CAUTION:
When working, be careful not to damage valve lifter holes.
4. Remove valve spring retainer and valve spring (with valve spring seat).
CAUTION:
Do not remove valve spring seat from valve spring.
5. Push valve stem to combustion chamber side, and remove valve.

Identify installation positions, and store them without mixing them up.
1. Valve collet 2. Valve spring retainer 3. Valve spring (with valve spring seat)
4. Valve oil seal 5. Valve guide 6. Cylinder head
7. Valve seat 8. Valve (INT) 9. Valve (EXH)
10. Spark plug tube 11. Spark plug
PBIC2629E
PBIC1791E

CYLINDER HEAD
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6. Remove valve oil seal with valve oil seal puller (SST).
7. When valve seat must be replaced, refer to EM-75, "
VALVE SEAT REPLACEMENT" to removal.
8. When valve guide must be replaced, refer to EM-73, "
VALVE GUIDE REPLACEMENT" to removal.
9. Remove spark plug tube, if necessary.

Using pliers, remove it from cylinder head.
CAUTION:

Be careful not to damage cylinder head.

Do not remove spark plug tube if not necessary. Once removed, spark plug tube cannot be
reused because of deformation.
ASSEMBLY
1. Install valve guide if removed. Refer to EM-73, "VALVE GUIDE REPLACEMENT" .
2. Install valve seat if removed. Refer to EM-75, "
VALVE SEAT REPLACEMENT" .
3. Install valve oil seal.

Install with valve oil seal drift (SST) to match dimension in the
figure.
4. Install valve.

Install larger diameter to intake side.
5. Install valve spring (with valve spring seat).

Install smaller pitch (valve spring seat side) to cylinder head
side.

Confirm identification color of valve spring.
6. Install valve spring retainer.
7. Install valve collet.
SEM093F
Height “H” : 11.8 - 12.4 mm (0.465 - 0.488 in)
KBIA1999J
Intake : Blue
Exhaust : Yellow
PBIC0525E

EM-72
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CYLINDER HEAD


Compress valve spring with valve spring compressor, attach-
ment and adapter (SST). Install valve collet with magnet
hand.
CAUTION:
When working, be careful not to damage valve lifter
holes.

Tap valve stem edge lightly with plastic hammer after installa-
tion to check its installed condition.
8. Install valve lifter.

Install it in the original position.
9. Install spark plug tube if removed.

Press-fit it into cylinder head with the following procedure:
a. Remove old liquid gasket from cylinder head side installation
hole.
b. Apply sealant all round on spark plug tube within approximately
12 mm (0.47 in) width from edge of spark plug tube on the
press-fit side.
Use Thread Locking Sealant or equivalent.
c. Using drift, press-fit spark plug tube so that height is as same as
“H” shown in the figure.
CAUTION:

When press-fitting, be careful not to deform spark plug tube.

After press-fitting, wipe off any protruding thread locking sealant on top surface of cylinder
head.
10. Install spark plug with spark plug wrench (commercial service tool).
Inspection After DisassemblyBBS0059E
VALVE DIMENSIONS

Check dimensions of each valve. For dimensions, refer to EM-
109, "Valve Dimensions" .

If dimensions are out of the standard, replace valve.
PBIC1791E
Standard press-fit height “H”
: 41.2 - 42.2 mm (1.622 - 1.661 in)
PBIC2636E
SEM188A