NISSAN TEANA 2003 Service Manual

CAMSHAFT
EM-43
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b. Push in chain tensioner plunger. Insert a stopper pin into hole on
chain tensioner body to secure chain tensioner plunger and
remove chain tensioner.
CAUTION:
Be careful not to drop mounting bolts inside front cover.
NOTE:
Use approximately 0.5 mm (0.02 in) dia. hard metal pin as a
stopper pin.
c. Secure hexagonal part of camshaft with wrench. Loosen cam-
shaft sprocket mounting bolts and remove camshaft sprockets.
CAUTION:

Do not loosen mounting bolts with securing anything
other than the camshaft hexagonal part or with tension-
ing timing chain.

Do not rotate crankshaft or camshaft while timing chain
is removed. It causes interference between valve and pis-
ton.
NOTE:
Chain tension holding work is not necessary. Crankshaft
sprocket and timing chain do not disconnect structurally while
front cover is attached.
9. Remove camshaft position sensor (PHASE) from cylinder head back side.
CAUTION:

Handle carefully to avoid dropping and shocks.

Do not disassemble.

Do not allow metal powder to adhere to magnetic part at sensor tip.

Do not place sensor in a location where it is exposed to magnetism.
10. Loosen mounting bolts in reverse order as shown in the figure,
and remove camshaft brackets.

Remove camshaft bracket (No. 1) by slightly tapping it with
plastic hammer.
11. Remove camshafts.
12. Remove valve lifters.

Identify installation positions, and store them without mixing them up.
KBIA0048E
KBIA0049E
SBIA0255E

EM-44
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CAMSHAFT

INSPECTION AFTER REMOVAL
Camshaft Runout
1. Put V-block on a precise flat table, and support No. 2 and 5 jour-
nal of camshaft.
CAUTION:
Do not support journal No. 1 (on the side of camshaft
sprocket) because it has a different diameter from the other
four locations.
2. Set dial indicator vertically to No. 3 journal.
3. Turn camshaft to one direction with hands, and measure the
camshaft runout on dial indicator. (Total indicator reading)
4. If out of the standard, replace camshaft.
Camshaft Cam Height
1. Measure the camshaft cam height with micrometer.
2. If wear is beyond the limit, replace camshaft.
Camshaft Journal Oil Clearance
CAMSHAFT JOURNAL DIAMETER

Measure the outer diameter of camshaft journal with microme-
ter.
CAMSHAFT BRACKET INNER DIAMETER

Tighten camshaft bracket bolts with specified torque. Refer to EM-47, "INSTALLATION" for the tightening
procedure.

Measure the inner diameter “A” of camshaft bracket with bore
gauge.Standard: Less than 0.02 mm (0.0008 in)
PBIC2499E
Standard:
Intake : 45.015 - 45.205 mm (1.7722 - 1.7797 in)
Exhaust : 42.825 - 43.015 mm (1.6860 - 1.6935 in)
Cam wear limit
: 0.2 mm (0.008 in)
PBIC0039E
Standard:
No. 1 : 27.935 - 27.955 mm (1.0998 - 1.1006 in)
No. 2, 3, 4, 5 : 23.435 - 23.455 mm (0.9226 - 0.9234 in)
PBIC0040E
Standard:
No. 1 : 28.000 - 28.021 mm (1.1024 - 1.1032 in)
No. 2, 3, 4, 5 : 23.500 - 23.521 mm (0.9252 - 0.9260 in)
PBIC1645E

CAMSHAFT
EM-45
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CAMSHAFT JOURNAL OIL CLEARANCE

(Oil clearance) = (Camshaft bracket inner diameter) – (Camshaft journal diameter)

If out of the standard, replace either or both camshaft and cylinder head.
NOTE:
Camshaft bracket cannot be replaced as a single part, because it is machined together with cylinder head.
Replace whole cylinder head assembly.
Camshaft End Play
1. Install camshaft in cylinder head. Refer to EM-47, "INSTALLATION" for the tightening procedure.
2. Install dial indicator in thrust direction on front end of camshaft.
Read the end play of dial indicator when camshaft is moved for-
ward/backward (in direction to axis).

Measure the following parts if out of the standard.
–Dimension “A” for camshaft No. 1 journal
–Dimension “B” for cylinder head No. 1 journal bearing

Refer to the standards above, and then replace camshaft and/or
cylinder head.
Camshaft Sprocket Runout
1. Put V-block on precise flat table, and support No. 2 and 5 journal of camshaft.
CAUTION:
Do not support journal No. 1 (on the side of camshaft sprocket) because it has a different diameter
from the other four locations.
2. Measure the camshaft sprocket runout with dial indicator. (Total
indicator reading)

If it exceeds the limit, replace camshaft sprocket.Standard : 0.045 - 0.086 mm (0.0018 - 0.0034 in)
Standard : 0.115 - 0.188 mm (0.0045 - 0.0074 in)
PBIC2446E
Standard : 25.800 - 25.848 mm (1.0157 - 1.0176 in)
Standard : 25.660 - 25.685 mm (1.0102 - 1.0112 in)
KBIA2426J
Limit : 0.15 mm (0.0059 in)
PBIC0930E

EM-46
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CAMSHAFT

Valve Lifter
Check if surface of valve lifter has any wear or cracks.

If anything above is found, replace valve lifter. Refer to EM-50,
"Valve Clearance" .
Valve Lifter Clearance
VALVE LIFTER OUTER DIAMETER

Measure the outer diameter of valve lifter with micrometer.
VALVE LIFTER HOLE DIAMETER
Measure the diameter of valve lifter hole of cylinder head with inside
micrometer.
VALVE LIFTER CLEARANCE

(Valve lifter clearance) = (Valve lifter hole diameter) – (Valve lifter outer diameter)

If out of the standard, referring to the each standard of valve lifter outer diameter and valve lifter hole
diameter, replace either or both valve lifter and cylinder head.
KBIA0182E
Standard : 33.965 - 33.980 mm (1.3372 - 1.3378 in)
JEM798G
Standard : 34.000 - 34.021 mm (1.3386 - 1.3394 in)
PBIC0043E
Standard : 0.020 - 0.056 mm (0.0008 - 0.0022 in)

CAMSHAFT
EM-47
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INSTALLATION
1. Install valve lifters.

Install them in the original positions.
2. Install camshafts.

Distinction between intake and exhaust camshafts is per-
formed with the different shapes of rear end.

Install camshafts so that camshaft dowel pins on the front side
are positioned as shown in the figure.
3. Install camshaft brackets with the following procedure.
CAUTION:
Completely remove any foreign material on back surface of camshaft brackets and top surface of
cylinder head.
a. Install camshaft brackets (No. 2 to 5) aligning the identification
marks on upper surface as shown in the figure.
NOTE:
Install so that identification mark can be correctly read when
viewed from the exhaust side.
b. Install camshaft bracket (No. 1) with the following procedure:
i. Apply liquid gasket to camshaft bracket (No. 1) as shown in the
figure.
Use Genuine Liquid Gasket or equivalent.
CAUTION:
After installation, be sure to wipe off any excessive liquid
gasket leaking from part “A”.Intake : Signal plate shape for camshaft position
sensor (PHASE)
Exhaust : Cone end shape
KBIA0246E
KBIA0051E
SBIA0256E
PBIC2579E

EM-48
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CAMSHAFT

ii. Apply liquid gasket to camshaft bracket (No. 1) contact surface
on the front cover backside.
Use Genuine Liquid Gasket or equivalent.

Apply liquid gasket to the outside of bolt hole on front cover.
iii. For camshaft bracket (No. 1) near installation position, and
install it without disturbing the liquid gasket applied to the sur-
faces.
4. Tighten mounting bolts of camshaft brackets in the following
steps, in numerical order as shown in the figure.
a. Tighten No. 9 to 11 in numerical order.
b. Tighten No. 1 to 8 in numerical order.
c. Tighten all bolts in numerical order.
d. Tighten all bolts in numerical order.
CAUTION:
After tightening mounting bolts of camshaft brackets, be sure to wipe off excessive liquid gasket
from the parts listed below.

Mating surfaces of rocker cover.

Mating surface of front cover. (When installed without front cover)
5. Install camshaft position sensor (PHASE).
6. Install camshaft sprockets.

Install them by aligning the mating marks on each camshaft
sprocket with the paint marks on timing chain link plate during
removal.
CAUTION:

Aligned mating marks could slip. Therefore, after
matching them, hold the timing chain in place by hand.

Before and after installing chain tensioner, make sure
again that mating marks have not slipped.
NOTE:
Before installation of chain tensioner, it is possible to re-match
the marks on timing chain with the ones on each sprocket.
7. Install chain tensioner.
SBIA0258E
PBIC2641E
: 2.0 N·m (0.2 kg-m, 1 ft-lb)
: 2.0 N·m (0.2 kg-m, 1 ft-lb)
: 5.9 N·m (0.6 kg-m, 4 ft-lb)
: 10.4 N·m (1.1 kg-m, 8 ft-lb)
SBIA0255E
PBIC2351E

CAMSHAFT
EM-49
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CAUTION:
After installation, pull the stopper pin off completely, and make sure that chain tensioner plunger
is released.
8. Install chain guide.
9. Install intake valve timing control cover with the following procedure:
a. Install oil rings to the intake camshaft sprocket insertion points on backside of intake valve timing control
cover.
b. Install O-ring to front cover.
c. Apply liquid gasket with tube presser [SST: WS39930000] to
intake valve timing control cover as shown in the figure.
Use Genuine Liquid Gasket or equivalent.
d. Tighten mounting bolts in numerical order as shown in the fig-
ure.
e. Install intake valve timing control solenoid valve to intake valve timing control cover if removed.
f. Connect ground cables, and install harness clip.
10. Check and adjust valve clearance. Refer to EM-50, "
Valve Clearance" .
11. Install in the reverse order of removal after this step.
NOTE:
If hydraulic pressure inside timing chain tensioner drops after removal/installation, slack in the guide may
generate a pounding noise during and just after engine start. However, this is normal. Noise will stop after
hydraulic pressure rises.
INSPECTION AFTER INSTALLATION
Inspection of Camshaft Sprocket (INT) Oil Groove
CAUTION:

Perform this inspection only when DTC P0011 is detected in self-diagnostic results of CONSULT-II
and it is directed according to inspection procedure of EC section. Refer to EC-82, "
SELF-DIAG
RESULTS MODE" .

Check when the engine is cold so as to prevent burns from any splashing engine oil.
1. Check the engine oil level. Refer to LU-7, "
ENGINE OIL" .
2. Perform the following procedure so as to prevent the engine from being unintentionally started while
checking.
a. Release fuel pressure. Refer to EC-49, "
FUEL PRESSURE RELEASE" .
b. Disconnect ignition coil and injector harness connectors.
3. Remove intake valve timing control solenoid valve. Refer to EM-41, "
CAMSHAFT" .
SBIA0260E
KBIA0085E

EM-50
[QR]
CAMSHAFT

4. Crank the engine, and then make sure that engine oil comes out
from intake valve timing control cover oil hole. End crank after
checking.
WARNING:
Be careful not to touch rotating parts (drive belt, idler pul-
ley, and crankshaft pulley, etc.).
CAUTION:
Engine oil may squirt from intake valve timing control sole-
noid valve installation hole during cranking. Use a shop
cloth to prevent the engine components and the vehicle. Do
not allow engine oil to get on rubber components such as
drive belt or engine mount insulators. Immediately wipe off
any splashed engine oil.

Clean oil groove between oil strainer and intake valve timing control solenoid valve if engine oil does not
come out from intake valve timing control cover oil hole. Refer to LU-5, "
LUBRICATION SYSTEM" .
5. Remove components between intake valve timing control solenoid valve and camshaft sprocket (INT),
and then check each oil groove for clogging.

Clean oil groove if necessary. Refer to LU-5, "LUBRICATION SYSTEM" .
6. After inspection, install removed parts.
Valve ClearanceBBS00596
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.
1. Remove rocker cover. Refer to EM-39, "
ROCKER COVER" .
2. Open splash guard on RH undercover.
3. Measure the valve clearance with the following procedure:
a. Set No. 1 cylinder at TDC of its compression stroke.

Rotate crankshaft pulley clockwise and align TDC mark to
timing indicator on front cover.

At the same time, make sure that both intake and exhaust
cam noses of No. 1 cylinder face outside as shown in the fig-
ure.

If they do not face outside, rotate crankshaft pulley once more
(360 degrees) and align as shown in the figure.
PBIC2723E
KBIA0190E
KBIA0400J

CAMSHAFT
EM-51
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b. Use a feeler gauge, measure the clearance between valve lifter
and camshaft.
Valve clearance:
Unit: mm (in)
*:Approximately 80°C (176°F)

By referring to the figure, measure the valve clearances at
locations marked “×” as shown in the table below (locations
indicated with black arrow in the figure) with a feeler gauge.

No. 1 cylinder compression TDC
c. Rotate crankshaft pulley one revolution (360 degrees) and align
TDC mark to timing indicator on front cover.

By referring to the figure, measure the valve clearance at
locations marked “×” as shown in the table below (locations
indicated with black arrow in the figure) with a feeler gauge.

No. 4 cylinder compression TDC
4. If out of standard, perform adjustment. Refer to EM-51, "
ADJUSTMENT" .
ADJUSTMENT

Perform adjustment depending on selected head thickness of valve lifter.
SEM139D
Cold Hot * (reference data)
Intake 0.24 - 0.32 (0.009 - 0.013) 0.304 - 0.416 (0.012 - 0.016)
Exhaust 0.26 - 0.34 (0.010 - 0.013) 0.308 - 0.432 (0.012 - 0.017)
Measuring position No. 1 CYL. No. 2 CYL. No. 3 CYL. No. 4 CYL.
No. 1 cylinder at
compression TDCINT × ×
EXH × ×
PBIC2624E
KBIA0190E
Measuring position No. 1 CYL. No. 2 CYL. No. 3 CYL. No. 4 CYL.
No. 4 cylinder at
compression TDCINT × ×
EXH × ×
PBIC2625E

EM-52
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CAMSHAFT

1. Remove camshaft. Refer to EM-41, "REMOVAL" .
2. Remove valve lifters at the locations that are out of the standard.
3. Measure the center thickness of the removed valve lifters with a
micrometer.
4. Use the equation below to calculate valve lifter thickness for replacement.

Thickness of new valve lifter can be identified by stamp mark
on the reverse side (inside the cylinder).
Stamp mark “696” indicates 6.96 mm (0.2740 in) in thickness.
NOTE:
Available thickness of valve lifter: 26 sizes range 6.96 to 7.46 mm (0.2740 to 0.2937 in) in steps of 0.02
mm (0.0008 in) (when manufactured at factory). Refer to EM-110, "
Available Valve Lifter" .
5. Install the selected valve lifter.
6. Install camshaft. Refer to EM-47, "
INSTALLATION" .
7. Manually rotate crankshaft pulley a few rotations.
8. Make sure that valve clearances for cold engine are within specifications by referring to the specified val-
ues. Refer to EM-50, "
INSPECTION" .
9. Install all removed parts in the reverse order of removal. Refer to EM-47, "
INSTALLATION" .
10. Warm up the engine, and check for unusual noise and vibration.
KBIA0057E
Valve lifter thickness calculation: t = t1 + (C1 – C2 )
t = Valve lifter thickness to be replaced
t
1 = Removed valve lifter thickness
C
1= Measured valve clearance
C
2= Standard valve clearance:
Intake : 0.28 mm (0.011 in)
Exhaust : 0.30 mm (0.012 in)
KBIA0119E