NISSAN TEANA 2003 Service Manual

CAMSHAFT
EM-193
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2. Install engine sub-attachment with engine stand shaft [SST: KV10117001 and KV10106500] to right side
of cylinder block, then lift engine, and mount it onto engine stand [SST: ST0501S000]. Refer to EM-228,
"CYLINDER BLOCK" .
3. Remove front timing chain case, camshaft sprocket, timing chain and rear timing chain case. Refer to EM-
173, "TIMING CHAIN" .
4. Remove camshaft position sensors (PHASE) (right and left
banks) 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 sensors in a location where they are
exposed to magnetism.
5. Remove intake valve timing control solenoid valves.

Discard intake valve timing control solenoid valve gaskets and
use new gaskets for installation.
6. Remove camshaft brackets.

Mark camshafts, camshaft brackets and bolts so they are placed in the same position and direction for
installation.

Equally loosen camshaft bracket bolts in several steps in the
reverse order as shown in the figure.
7. Remove camshafts.
8. Remove valve lifters.
KBIA1046E
SEM443GA
PBIC2050E

EM-194
[VQ]
CAMSHAFT


Identify installation positions, and store them without mixing them up.
9. Remove chain tensioners (secondary) from both cylinder heads
(right and left banks).

Remove timing chain tensioner (secondary) with its stopper
pin attached.
NOTE:
Stopper pin was attached when timing chain (secondary) was
removed.
INSPECTION AFTER REMOVAL
Camshaft Runout
1. Put V-block on precise flat table, and support No. 2 and 4 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
three locations.
2. Set dial indicator vertically to No. 3 journal.
3. Turn camshaft to one direction with hands, and measure cam-
shaft runout on dial indicator. (Total indicator reading)
4. If it exceeds the limit, replace camshaft.
Camshaft Cam Height
1. Measure camshaft cam height with micrometer.
2. If wear is beyond the limit, replace camshaft.
PBIC2111E
Standard : 0.02 mm (0.0010 in)
Limit : 0.05 mm (0.0020 in)PBIC0929E
Standard cam height
Intake
VQ23DE : 44.265 - 44.455 mm (1.7427 - 1.7502 in)
VQ35DE : 44.865 - 45.055 mm (1.7663 - 1.7738 in)
Exhaust
VQ23DE : 43.405 - 43.595 mm (1.7089 - 1.7163 in)
VQ35DE : 44.865 - 45.055 mm (1.7663 - 1.7738 in)
Cam wear limit
: 0.2 mm (0.008 in)
EMQ0072D

CAMSHAFT
EM-195
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Camshaft Journal Oil Clearance
CAMSHAFT JOURNAL DIAMETER

Measure outer diameter of camshaft journal with micrometer.
CAMSHAFT BRACKET INNER DIAMETER

Tighten camshaft bracket bolt with the specified torque. Refer to EM-197, "INSTALLATION" for the tight-
ening procedure.

Measure inner diameter “A” of camshaft bracket with bore
gauge.
CAMSHAFT JOURNAL OIL CLEARANCE

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

If it exceeds the limit, 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

Install dial indicator in thrust direction on front end of camshaft.
Measure the end play of dial indicator when camshaft is moved
forward/backward (in direction to axis).Standard:
No. 1 : 25.935 - 25.955 mm (1.0211 - 1.0218 in)
No. 2, 3, 4 : 23.445 - 23.465 mm (0.9230 - 0.9238 in)
PBIC0040E
Standard:
No. 1 : 26.000 - 26.021 mm (1.0236 - 1.0244 in)
No. 2, 3, 4 : 23.500 - 23.521 mm (0.9252 - 0.9260 in)
PBIC1645E
Standard:
No. 1 : 0.045 - 0.086 mm (0.0018 - 0.0034 in)
No. 2, 3, 4 : 0.035 - 0.076 mm (0.0014 - 0.0030 in)
Limit : 0.15 mm (0.0059 in)
Standard : 0.115 - 0.188 mm (0.0045 - 0.0074 in)
Limit : 0.24 mm (0.0094 in)
SEM864E

EM-196
[VQ]
CAMSHAFT


Measure the following parts if out of the limit.
–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 4 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 three locations.
2. Measure the camshaft sprocket runout with dial indicator. (Total
indicator reading)

If it exceeds the limit, replace camshaft sprocket.
Valve Lifter
Check if surface of valve lifter has any wear or cracks.

If anything above is found, replace valve lifter. Refer to EM-202,
"Valve Clearance" .
Valve Lifter Clearance
VALVE LIFTER OUTER DIAMETER

Measure outer diameter at 1/2 height of valve lifter with
micrometer since valve lifter is in barrel shape.Standard : 27.500 - 27.548 mm (1.0827 - 1.0846 in)
Standard : 27.360 - 27.385 mm (1.0772 - 1.0781 in)
KBIA2404J
Limit : 0.15 mm (0.0059 in)
PBIC0930E
KBIA0182E
Standard
VQ23DE : 29.977 - 29.987 mm (1.1802 - 1.1806 in)
VQ35DE : 33.977 - 33.987 mm (1.3377 - 1.3381 in)
JEM798G

CAMSHAFT
EM-197
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VALVE LIFTER HOLE DIAMETER

Measure inner 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 each standard of valve lifter outer diameter and valve lifter hole diame-
ter, replace either or both valve lifter and cylinder head.
INSTALLATION
1. Install timing chain tensioners (secondary) on both cylinder
heads (right and left banks).

Install timing chain tensioner (secondary) with its stopper pin
attached.

Install timing chain tensioner (secondary) with sliding part fac-
ing downward on cylinder head (right bank), and with sliding
part facing upward on cylinder head (left bank).

Install new O-ring as shown in the figure.
2. Install valve lifters.

Install them in the original position.
3. Install camshafts.

Install camshaft with dowel pin attached to its front end face
on the exhaust side.Standard
Intake
VQ23DE : 30.015 - 30.031 mm (1.1817 - 1.1823 in)
VQ35DE : 34.000 - 34.016 mm (1.3386 - 1.3392 in)
Exhaust
VQ23DE : 30.003 - 30.019 mm (1.1812 - 1.1818 in)
VQ35DE : 34.000 - 34.016 mm (1.3386 - 1.3392 in)
SEM867E
Standard
Intake
VQ23DE : 0.028 - 0.054 mm (0.0011 - 0.0021 in)
VQ35DE : 0.013 - 0.039 mm (0.0005 - 0.0015 in)
Exhaust
VQ23DE : 0.016 - 0.042 mm (0.0006 - 0.0017 in)
VQ35DE : 0.013 - 0.039 mm (0.0005 - 0.0015 in)
PBIC2111E
KBIA1071E

EM-198
[VQ]
CAMSHAFT


Follow your identification marks made during removal, or fol-
low the identification marks that are present on new cam-
shafts for proper placement and direction.
VQ23DE
VQ35DE

Install camshafts so that dowel pin hole and dowel pin on front
end face are positioned as shown in the figure. (No. 1 cylinder
TDC on its compression stroke)
NOTE:

Large and small pin holes are located on front end face of
camshaft (INT), at intervals of 180 degrees. Face small dia.
side pin hole upward (in cylinder head upper face direc-
tion).

Though camshaft does not stop at the portion as shown in
the figure, for the placement of cam nose, it is generally
accepted camshaft is placed for the same direction of the
figure.
KBIA1009E
Bank INT/EXH Dowel pinPaint marks
Identification mark
M1 M2
RHINT No White No RE
EXH Yes No Blue RE
LHINT No White No LH
EXH Yes No Blue LH
Bank INT/EXH Dowel pinPaint marks
Identification mark
M1 M2
RHINT No Pink No RE
EXH Yes No Orange RE
LHINT No Pink No LH
EXH Yes No Orange LH
PBIC2478E

CAMSHAFT
EM-199
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4. Install camshaft brackets.

Remove foreign material completely from camshaft bracket
backside and from cylinder head installation face.

Install camshaft bracket in original position and direction as
shown in the figure.

Install camshaft brackets (No. 2 to 4) aligning the stamp
marks as shown in the figure.
NOTE:
There are no identification marks indicating left and right for
camshaft bracket (No. 1).

Apply liquid gasket to mating surface of camshaft bracket (No.
1) as shown on right and left banks.
Use Genuine Liquid Gasket or equivalent.
PBIC2051E
PBIC2052E
PBIC2617E

EM-200
[VQ]
CAMSHAFT

5. Tighten camshaft bracket bolts in the following steps, in numeri-
cal order as shown in the figure.
a. Tighten No. 7 to 10 in order as shown.
b. Tighten No. 1 to 6 in order as shown.
c. Tighten No. 1 to 10 in numerical order as shown.
d. Tighten No. 1 to 10 in numerical order as shown.
CAUTION:
After tightening mounting bolts of camshaft brackets (No.
1), be sure to wipe off excessive liquid gasket from the
parts list below.

Mating surface of rocker cover

Mating surface of rear timing chain case
6. Measure the difference in levels between front end faces of
camshaft bracket (No. 1) and cylinder head.

Measure two positions (both intake and exhaust side) for a
single bank.

If measured value is out of the standard, re-install camshaft
bracket (No. 1).
7. Check and adjust the valve clearance. Refer to EM-202, "
Valve Clearance" .
8. Install in the reverse order of removal after this step. : 1.96 N·m (0.20 kg-m, 1 ft-lb)
: 1.96 N·m (0.20 kg-m, 1 ft-lb)
: 5.88 N·m (0.60 kg-m, 4 ft-lb)
: 10.4 N·m (1.1 kg-m, 8 ft-lb)
PBIC2050E
Standard : −0.14 to 0.14 mm (−0.006 to 0.006 in)
EMQ0044D

CAMSHAFT
EM-201
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INSPECTION AFTER INSTALLATION
Inspection of Camshaft Sprocket (INT) Oil Groove
CAUTION:

Perform this inspection only when DTC P0011 or P0021 are detected in self-diagnostic results of
CONSULT-II and it is directed according to inspection procedure of EC section. Refer to EC-427,
"SELF-DIAG RESULTS MODE" .

Check when engine ins cold so as to prevent burns from any splashing engine oil.
1. Check the engine oil level. Refer to LU-19, "
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-392, "
FUEL PRESSURE RELEASE" .
b. Disconnect ignition coil and injector harness connectors.
3. Remove intake manifold control solenoid valve. Refer to EM-192, "
CAMSHAFT" .
4. Crank the engine, and then make sure that engine oil comes out
from camshaft bracket (No. 1) oil hole. End crank after checking.
WARNING:
Be careful not to touch rotating parts (drive belts, 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 camshaft bracket (No. 1) oil hole. Refer to LU-17, "
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-17, "LUBRICATION SYSTEM" .
6. After inspection, install removed parts.
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.
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.

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.
PBIC2869E

EM-202
[VQ]
CAMSHAFT

Summary of the inspection items:
* Transmission/transaxle/CVT fluid. power steering fluid, brake fluid, etc.
Valve ClearanceBBS004W2
INSPECTION
In cases of removing/installing or replacing camshaft and valve-
related parts, or of unusual engine conditions due to changes in
valve clearance (found malfunctions during stating, idling or causing
noise), perform inspection as follows:
1. Remove rocker covers (right and left banks). Refer to EM-160, "
ROCKER COVER" .
2. Remove splash guard (RH).
3. Measure the valve clearance as follows:
a. Set No. 1 cylinder at TDC of its compression stroke.

Rotate crankshaft pulley clockwise to align timing mark
(grooved line without color) with timing indicator.

Make sure that intake and exhaust cam noses on No. 1 cylin-
der (engine front side of right bank) are located as shown in
the figure.

If not, rotate crankshaft one revolution (360 degrees) and
align as shown in the figure.
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 —
SEM713A
SEM918G
SEM418G