cam NISSAN TEANA 2003 Service Manual

TIMING CHAIN
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3. Install crankshaft sprocket and balancer unit timing chain.

Make sure that crankshaft sprocket is positioned with mating
marks on cylinder block and crankshaft sprocket meeting at
the top.

Install balancer unit timing chain by aligning mating marks on
each sprocket and balancer unit timing chain.
4. Install balancer unit timing chain tensioner.
NOTE:
Chain guide and tensioner move freely with staking pin as the
axle. Therefore, bolt hole position of the three points could be
changed during removal. If points change, temporarily fix the
two mounting bolts on chain guide, and move tensioner to mate
the bolt holes.

Be careful not to let mating marks of each sprocket and timing
chain slip.

After installation, make sure the mating marks have not
slipped, then remove stopper pin and release tensioner
sleeve.
5. Install timing chain and related parts.

Install by aligning mating marks on each sprocket and timing
chain.

Before and after installing chain tensioner, check again to
make sure that mating marks have not slipped.

After installing chain tensioner, remove stopper pin, and make
sure that tensioner moves freely.
CAUTION:

For the following note, after the mating marks are
aligned, keep them aligned by holding them with a
hand.

To avoid skipped teeth, do not rotate crankshaft and
camshaft until front cover is installed.
NOTE:
Before installing chain tensioner, it is possible to change the
position of mating mark on timing chain for that on each
sprocket for alignment.
6. Install front oil seal to front cover. Refer to EM-63, "
Removal and Installation of Front Oil Seal" .
7. Install front cover with the following procedure:
a. Install O-rings to cylinder head and cylinder block.
PBIC2183E
KBIA0124E
PBIC2182E

EM-60
[QR]
TIMING CHAIN

b. Apply a continuous bead of liquid gasket with tube presser [SST:
WS39930000] to front cover as shown in the figure.
Use Genuine Liquid Gasket or equivalent.
NOTE:
Application instruction differs depending on the position.
c. Make sure that mating marks of timing chain and each sprocket are still aligned. Then install front cover.

When installing, align flat faces at oil pump drive spacer and oil pump inner rotor.
CAUTION:

Do not let A/C and power steering pipings interfere with upper part of front cover.

Be careful not to damage front oil seal by interference with front end of crankshaft.
d. Tighten mounting bolts in numerical order as shown in the fig-
ure.

Refer to the following for locating M6 bolts.

At the same time, install RH engine mounting bracket. (Bolt
positions 1 to 4 in the figure)
e. After all bolts are tightened, retighten them to specified torque in
numerical order as shown in the figure.
CAUTION:
Be sure to wipe off any excessive liquid gasket leaking to
surface for fitting oil pan (upper).
8. Install chain guide between camshaft sprockets.
9. Install intake valve timing control cover with the following procedure:
a. Install oil rings to the camshaft sprocket (INT) insertion points on backside of intake valve timing control
cover.
b. Install O-ring to front cover.Detail of A : Cross over the start of the applica-
tion and the end.
Detail of B : Apply liquid gasket outside of bolt
holes. (For all bolt holes other than
B, apply to the inside.)
Detail of C : Between here only, apply 4.5 - 5.5
mm (0.177 - 0.217 in) dia.
SBIA0267E
Bolt length: Bolt position
45 mm (1.77 in) : 5, 14, 17
20 mm (0.79 in) : Except the above (Except 1 to 4)
KBIA0083E

EM-62
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OIL SEAL

OIL SEALPFP:12279
Removal and Installation of Valve Oil SealBBS00598
REMOVAL
1. Remove camshafts. Refer to EM-41, "CAMSHAFT" .
2. Remove valve lifters. Refer to EM-41, "
CAMSHAFT" .
3. Rotate crankshaft, and set piston whose valve oil seal is to be removed to TDC. This will prevent valve
from dropping into cylinder.
CAUTION:
When rotating crankshaft, be careful to avoid scarring front cover with timing chain.
4. 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.
5. Remove valve spring retainer and valve spring (with valve spring seat).
CAUTION:
Do not remove valve spring seat from valve spring.
6. Remove valve oil seal with valve oil seal puller (SST).
INSTALLATION
1. Apply new engine oil to new valve oil seal joint surface and seal lip.
2. Press in valve oil seal to the height “H” shown in the figure with
valve oil seal drift (SST).
3. Install in the reverse order of removal after this step.
PBIC1791E
SEM093F
Height “H” : 11.8 - 12.4 mm (0.465 - 0.488 in)
KBIA1999J

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-74
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CYLINDER HEAD

2. Drive out valve guide with a press [under a 20 kN (2 ton, 2.2 US
ton, 2.0 lmp ton) force] or hammer and valve guide drift (com-
mercial service tool).
CAUTION:
Cylinder head contains heat, when working, wear protective
equipment to avoid getting burned.
3. Ream cylinder head valve guide hole with valve guide reamer
(commercial service tool).
4. Heat cylinder head to 110 to 130°C (230 to 266°F) by soaking in
heated oil.
5. Using valve guide drift (commercial service tool), press valve
guide from camshaft side to dimensions as shown in the figure.
CAUTION:
Cylinder head contains heat, when working, wear protective
equipment to avoid getting burned.
SEM931C
Valve guide hole diameter (for service parts):
Intake and exhaust
: 10.175 - 10.196 mm (0.4006 - 0.4014 in)
SEM932C
SEM008A
Projection “H”:
Intake : 10.1 - 10.3 mm (0.398 - 0.406 in)
Exhaust : 10.0 - 10.4 mm (0.394 - 0.409 in)
PBIC2187E

SERVICE DATA AND SPECIFICATIONS (SDS)
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CAMSHAFT AND CAMSHAFT BEARING
Unit: mm (in)
*
1 : Cam wear limit
*2 : Total indicator reading
CYLINDER BLOCK
Unit: mm (in) Items Standard Limit
Camshaft journal oil clearance 0.045 - 0.086 (0.0018 - 0.0034) —
Camshaft bracket inner diameterNo. 1 28.000 - 28.021 (1.1024 - 1.1032) —
No. 2, 3, 4, 5 23.500 - 23.521 (0.9252 - 0.9260) —
Camshaft journal outer diameterNo. 1 27.935 - 27.955 (1.0998 - 1.1006) —
No. 2, 3, 4, 5 23.435 - 23.455 (0.9226 - 0.9234) —
Camshaft end play 0.115 - 0.188 (0.0045 - 0.0074) —
Camshaft cam height “A”Intake 45.015 - 45.205 (1.7722 - 1.7797)
0.2 (0.008)*
1Exhaust 42.825 - 43.015 (1.6860 - 1.6935)
Camshaft runout [TIR*
2 ]Less than 0.02 (0.0008) —
Camshaft sprocket runout [TIR*
2 ]— 0.15 (0.0059)
SEM671
Surface distortion Limit 0.1 (0.004)
StandardGrade No. 2 89.010 - 89.020 (3.5043 - 3.5047)
Cylinder bore Inner diameter Grade No. 3 89.020 - 89.030 (3.5047 - 3.5051)
Wear limit 0.2 (0.008)
Out-of-round (Difference between “X” and “Y”)
Limit0.015 (0.0006)
Taper (Difference between “A” and “C”) 0.01 (0.0004)
PBIC0281E

NOISE, VIBRATION AND HARSHNESS (NVH) TROUBLESHOOTING
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Use the Chart Below to Help You Find the Cause of the Symptom.BBS004VL
1. Locate the area where noise occurs.
2. Confirm the type of noise.
3. Specify the operating condition of engine.
4. Check specified noise source.
If necessary, repair or replace these parts.
A: Closely related B: Related C: Sometimes related —: Not relatedLocation
of noiseTy p e o f
noiseOperating condition of engine
Source of
noiseCheck itemRefer-
ence page Before
warm-
upAfter
warm-
upWhen
start-
ingWhen
idlingWhen
racingWhile
driving
Top of
engine
Rocker
cover
Cylinder
headTicking or
clickingCA—AB—Tappet
noiseValve clearanceEM-202
Rattle C A — A B CCamshaft
bearing
noiseCamshaft runout
Camshaft journal oil
clearanceEM-194EM-195
Crank-
shaft pul-
ley
Cylinder
block
(Side of
engine)
Oil panSlap or
knock—A—B B—Piston pin
noisePiston to piston pin oil
clearance
Connecting rod bush-
ing oil clearanceEM-245
EM-247
Slap or
rapA——BBAPiston
slap noisePiston to cylinder bore
clearance
Piston ring side clear-
ance
Piston ring end gap
Connecting rod bend
and torsionEM-249EM-246
EM-246
EM-247
Knock ABCBBBConnect-
ing rod
bearing
noiseConnecting rod bush-
ing oil clearance
Connecting rod bear-
ing oil clearanceEM-247EM-253
Knock A B — A B CMain
bearing
noiseMain bearing oil clear-
ance
Crankshaft runoutEM-252EM-251
Front of
engine
Timin g
chain
caseTapping or
tickingAA—BBBTimin g
chain and
chain ten-
sioner
noiseTiming chain cracks
and wear
Timing chain tensioner
operationEM-180
EM-173
Front of
engineSqueak-
ing or fizz-
ingAB—B—CDrive belts
(Sticking
or slip-
ping)Drive belts deflection
EM-128
CreakingABABABDrive belts
(Slipping)Idler pulley bearing
operation
Squall
CreakAB—BABWater
pump
noiseWater pump operationCO-46,
"WATER
PUMP"

ROCKER COVER
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7. Loosen mounting bolts in the reverse order shown in the figure.
8. Remove rocker cover gaskets from rocker covers.
9. Use scraper to remove all trances of liquid gasket from cylinder head and camshaft bracket (No. 1).
CAUTION:
Do not scratch or damage the mating surface when cleaning off old liquid gasket.
INSTALLATION
1. Apply liquid gasket with tube presser [SST: WS39930000] to
joint part among rocker cover, cylinder head and camshaft
bracket (No. 1) as follows:
Use Genuine Liquid Gasket or equivalent.
NOTE:
The figure shows an example of left bank side [zoomed in
shows camshaft bracket (No. 1)].
a. Refer to the figure “a” to apply liquid gasket to joint part of cam-
shaft bracket (No. 1) and cylinder head.
b. Refer to the figure “b” to apply liquid gasket to the figure “a”
squarely.
2. Install new rocker cover gasket to rocker cover.
3. Install rocker cover.

Check if rocker cover gasket is not dropped from installation groove of rocker cover.
PBIC1184E
PBIC2474E

EM-164
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FRONT TIMING CHAIN CASE

b. Make sure that intake and exhaust cam noses on No. 1 cylinder
(engine front side of right bank) are located as shown in the fig-
ure.

If not, turn crankshaft one revolution (360 degrees) and align
as shown in the figure.
NOTE:
When only timing chain (primary) is removed, rocker cover does
not need to be removed. To make sure that No. 1 cylinder is at
its compression TDC, remove front timing chain case first. Then
check mating marks on camshaft sprockets. Refer to EM-181,
"INSTALLATION" .
16. Remove crankshaft pulley as follows:
a. Fix crankshaft with pulley holder (SST).
b. Loosen crankshaft pulley bolt and locate bolt seating surface at
10 mm (0.39 in) from its original position.
CAUTION:
Do not remove crankshaft pulley bolt as it will be used as a
supporting point for suitable puller.
c. Place suitable puller tab on holes of crankshaft pulley, and pull
crankshaft pulley through.
CAUTION:
Do not put suitable puller tab on crankshaft pulley periph-
ery, as this will damage internal damper.
17. Remove oil pan (lower). Refer to EM-145, "
OIL PAN AND OIL STRAINER" .
18. Loosen two mounting bolts in front of oil pan (upper) in the
reverse order as shown in the figure.
19. Install oil pan (lower) temporarily.

Applying liquid gasket is unnecessary.
20. Support the oil pan (lower) bottom with jack.

Perform following operations with engine front side supported with jack.
CAUTION:
Put a piece of wood or something similar as the supporting surface, be careful not to damage oil
pan (lower).
21. Remove right and left intake valve timing control covers.
SEM418G
PBIC2475E
SEM915E
PBIC1637E

FRONT TIMING CHAIN CASE
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Loosen mounting bolts in the reverse order as shown in the
figure.

U s e s e a l c u t t e r [ S S T: K V 1 0 1111 0 0 ] o r e q u i v a l e n t t o o l t o c u t
liquid gasket for removal.
CAUTION:
Shaft is internally jointed with camshaft sprocket (INT) cen-
ter hole. When removing, keep it horizontal until it is com-
pletely disconnected.
22. Remove collared O-rings from front timing chain case oil holes
(left and right sides).
23. Remove engine mounting insulator (RH) and engine mounting bracket (RH). Refer to EM-223, "
ENGINE
ASSEMBLY" .
24. Raise engine front side with jack. (This secures workspace to remove front timing chain case.)
25. Remove front timing chain case as follows:
a. Loosen mounting bolts in the reverse order as shown in the fig-
ure.
b. Insert suitable tool into the notch at the top of front timing chain
case as shown (1).
c. Pry off case by moving tool as shown (2).

U s e s e a l c u t t e r [ S S T: K V 1 0 1111 0 0 ] t o c u t l i q u i d g a s k e t f o r
removal.
CAUTION:

Do not use screwdriver or something similar.

After removal, handle front timing chain case carefully so
it does not tilt, cant, or warp under a load.
PBIC0918E
PBIC2631E
SEM730G
SEM156F