height NISSAN TEANA 2008 Owner's Guide

CYLINDER HEAD
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a. Apply new engine oil on valve oil seal joint and seal lip.
b. Install with the valve oil seal drift [SST: KV10115600 (J-38958)]
(A) press fit valve seal to height (b) shown in the figure.
NOTE:
Dimension: Height measured before valve spring seat installa-
tion.
4. Install valve spring seat.
5. Install valve.
 Install it in the original position.
NOTE:
Larger diameter valves are for intake side.
6. Install valve spring (uneven pitch type).
 Install narrow pitch end (paint mark) to cylinder head side
(valve spring seat side).
7. Install valve spring retainer.
8. Install valve collet.
 Compress valve spring with the valve spring compressor [SST:
KV10116200 (J26336-A)] (A), the attachment [SST:
KV10115900 (J26336-20)] (C) and the adapter [SST:
KV10109220 ( — )] (B). Install valve collet with a magnet
hand.
CAUTION:
When working, take care not to damage valve lifter holes.
 Tap valve stem edge lightly with plastic hammer after installa-
tion to check its installed condition.
9. Install valve lifter.
 Install it in the original position.
10. Install spark plug tube.
 Press-fit spark plug tube as follows:
a. Remove old liquid gasket adhering to cylinder head mounting hole.
b. Apply sealant to area within approximately 12 mm (0.47 in) from edge of spark plug tube press-fit side.
Use high strength thread locking sealant or equivalent. Intake and exhaust : 14.3 - 14.9 mm (0.563 - 0.587 in)
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A : Wide pitch
B : Narrow pitch
C : Paint mark
: Cylinder head side
Paint mark color: Blue
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JPBIA0180ZZ

EM-104
< DISASSEMBLY AND ASSEMBLY >
CYLINDER HEAD
c. Using a drift, press-fit spark plug tube so that its height (A) is as
specified in the figure.
CAUTION:
 When press-fitting, take care not to deform spark plug
tube.
 After press-fitting, wipe off liquid gasket protruding onto
cylinder-head upper face.
11. Install spark plug with the spark plug wrench (commercial service tool).
InspectionINFOID:0000000003802292
INSPECTION AFTER REMOVAL
Cylinder Head Bolts Outer Diameter
 Cylinder head bolts are tightened by plastic zone tightening
method. Whenever the size difference between (C) and (B)
exceeds the limit, replace them with new one.
 If reduction of outer diameter appears in a position other than (B),
use it as (B) point.
Cylinder Head Distortion
NOTE:
When performing this inspection, cylinder block distortion should be also checking. Refer to EM-143,
"CylinderBlock".
1. Using a scraper, wipe off oil, scale, gasket, sealant and carbon deposits from surface of cylinder head.
CAUTION:
Never allow gasket fragments to enter engine oil or engine coolant passages.
2. At each of several locations on bottom surface of cylinder head,
measure the distortion in six directions (A), (B), (C), (D), (E) and
(F).
 If it exceeds the limit, replace cylinder head.
INSPECTION AFTER DISASSEMBLY
Valve Dimensions
 Check the dimensions of each valve. For the dimensions, refer to EM-139, "CylinderHead".
 If dimensions are out of the standard, replace valve and check valve seat contact. Refer to "Valve Seat Con-
tact".
Valve Guide Clearance
Valve Stem Diameter
B : High strength thread locking sealant application area
Standard press-fit height: 37.7 - 38.7 mm (1.484 - 1.524 in)
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Limit [(C) - (B)] : 0.11 mm (0.0043 in)
A : Measuring point
d : 11 mm (0.43 in)
e : 48 mm (1.89 in)
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Limit : Refer to EM-139, "CylinderHead".
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CYLINDER HEAD
 Check the valve spring pressure at specified spring height.
 If the installation load or load with valve open is out of the stan-
dard, replace valve spring.
INSPECTION AFTER INSTALLATION
Inspection for Leakage
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-11, "
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 leak-
age 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 check 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.
Summary of the inspection items:
*: Transmission/transaxle/CVT fluid, power steering fluid, brake fluid, etc.
Standard (Intake and exhaust)
: Refer to EM-139,
"CylinderHead". Free height
Installation height
Installation load
Height during valve open
Load with valve open
SEM113
Items 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 —

CYLINDER BLOCK
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 Remove main bearing caps and bearings, and using the scale on
the plastigage bag, measure the plastigage width.
NOTE:
The procedure when the measured value exceeds the limit is
same as that described in the “Method by Calculation”.
MAIN BEARING CRUSH HEIGHT
 When main bearing cap is removed after being tightened to the
specified torque with main bearings (1) installed, the tip end of
bearing must protrude. Refer to EM-110, "
Disassembly and
Assembly" for the tightening procedure.
 If the standard is not met, replace main bearings.
CONNECTING ROD BEARING CRUSH HEIGHT
 When connecting rod bearing cap is removed after being tightened
to the specified torque with connecting rod bearings (1) installed,
the tip end of bearing must protrude. Refer to EM-110, "
Disassem-
bly and Assembly" for the tightening procedure.
 If the standard is not met, replace connecting rod bearings.
MAIN BEARING CAP BOLT OUTER DIAMETER
 Measure the outer diameters (c), (d) at two positions as shown in
the figure.
 If reduction appears in (a) range, regard it (c).
 If it exceeds the limit (large difference in dimensions), replace main
bearing cap bolt with new one.
CONNECTING ROD BOLT OUTER DIAMETER
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A : Crush height
Standard : There must be crush height.
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A : Crush height
Standard : There must be crush height.
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a : 20 mm (0.79 in)
b : 30 mm (1.18 in)
e : 10 mm (0.39 in)
Limit [(d) – (c)] : 0.11 mm (0.0043 in)
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EM-136
< SERVICE DATA AND SPECIFICATIONS (SDS)
SERVICE DATA AND SPECIFICATIONS (SDS)
Drive Belt
INFOID:0000000003802301
DRIVE BELT
Spark PlugINFOID:0000000003802302
SPARK PLUG
Unit: mm (in)
Intake Manifold INFOID:0000000003802303
INTAKE MANIFOLD
Unit: mm (in)
Exhaust ManifoldINFOID:0000000003802304
EXHAUST MANIFOLD
Unit: mm (in)
CamshaftINFOID:0000000003802305
CAMSHAFT
Unit: mm (in)
Tension of drive belt Belt tension is not necessary, as it is automatically adjusted by drive belt auto-tensioner.
MakeDENSO
Standard typeVQ25DE FXE20HR11
VQ35DE FXE22HR11
Gap (Nominal)Standard 1.1 (0.043)
Limit 1.4 (0.055)
Items Limit
Surface distortion Intake manifold 0.1 (0.004)
Items Limit
Surface distortion Exhaust manifold 0.3 (0.012)
ItemsStandard
Limit
VQ25DE VQ35DE
Camshaft journal oil clearanceNo. 1 0.045 - 0.086 (0.0018 - 0.0034)
0.15 (0.0059)
No. 2, 3, 4 0.035 - 0.076 (0.0014 - 0.0030)
Camshaft bracket inner diameterNo. 1 26.000 - 26.021 (1.0236 - 1.0244) —
No. 2, 3, 4 23.500 - 23.521 (0.9252 - 0.9260) —
Camshaft journal diameterNo. 1 25.935 - 25.955 (1.0211 - 1.0218) —
No. 2, 3, 4 23.445 - 23.465 (0.9230 - 0.9238) —
Camshaft end play 0.115 - 0.188 (0.0045 - 0.0074) 0.24 (0.0094)
Camshaft cam height “A”Intake44.665 - 44.855
(1.7585 - 1.7659)45.465 - 45.655
(1.7900 - 1.7974)0.2 (0.008)*
1
Exhaust44.775 - 44.965
(1.7628 - 1.7703)45.475 - 45.665
(1.7904 - 1.7978)0.2 (0.008)*1
Camshaft runout [TIR*2]Less than 0.02 (0.0008) 0.05 (0.0020)

SERVICE DATA AND SPECIFICATIONS (SDS)
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Cylinder HeadINFOID:0000000003802306
CYLINDER HEAD
Unit: mm (in)
VALVE DIMENSIONS
820P 8.20 (0.3228)
822P 8.22 (0.3236)
824P 8.24 (0.3244)
826P 8.26 (0.3252)
828P 8.28 (0.3260)
830P 8.30 (0.3268)
832P 8.32 (0.3276)
834P 8.34 (0.3283)
836P 8.36 (0.3291)
838P 8.38 (0.3299)
840P 8.40 (0.3307) Identification (stamped) mark Thickness
SEM758G
Items Standard Limit
Head surface distortion Less than 0.03 (0.0012) 0.1 (0.004)
Normal cylinder head height “H” 126.3 - 126.5 (4.97 - 4.98) —
PBIC0924E

SERVICE DATA AND SPECIFICATIONS (SDS)
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Unit: mm (in)
*1: Diameter made by intersection point of conic angles “α1” and “α2”
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2: Diameter made by intersection point of conic angles “α2” and “α3”
*
3: Machining data
VQ35DE
Items Standard Oversize (Service) [0.5 (0.020)]
Cylinder head seat recess diameter “D”Intake 35.000 - 35.016 (1.3780 - 1.3786) 35.500 - 35.516 (1.3976 - 1.3983)
Exhaust 30.000 - 30.016 (1.1811 - 1.1817) 30.500 - 30.516 (1.2008 - 1.2014)
Valve seat outer diameter “d”Intake 35.080 - 35.096 (1.3811 - 1.3817) 35.580 - 35.596 (1.4008 - 1.4014)
Exhaust 30.080 - 30.096 (1.1842 - 1.1849) 30.580 - 30.596 (1.2669 - 1.2676)
Valve seat interference fitIntake 0.064 - 0.096 (0.0025 - 0.0038)
Exhaust 0.064 - 0.096 (0.0025 - 0.0038)
Diameter “d1”*
1Intake 35.3 (1.390)
Exhaust 30.3 (1.193)
Diameter “d2”*
2Intake 33.3 - 33.8 (1.311 - 1.331)
Exhaust 28.1 - 28.6 (1.106 - 1.126)
Angle “α1”Intake 60°
Exhaust 60°
Angle “α2”Intake 88°45′ - 90°15′
Exhaust 88°45′ - 90°15′
Angle “α3”Intake 120°
Exhaust 120°
Contacting width “W”*
3Intake 1.0 - 1.4 (0.039 - 0.055)
Exhaust 1.2 - 1.6 (0.047 - 0.063)
Height “h”Intake 6.2 - 6.3 (0.244 - 0.248) 5.4 - 5.5 (0.213 - 0.217)
Exhaust 5.9 - 6.0 (0.232 - 0.236) 4.95 - 5.05 (0.1949 - 0.1988)
Depth “H”Intake 6.35 (0.2500)
Exhaust 6.0 (0.236)
PBIC2745E

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< SERVICE DATA AND SPECIFICATIONS (SDS)
SERVICE DATA AND SPECIFICATIONS (SDS)
Unit: mm (in)
*1: Diameter made by intersection point of conic angles “α1” and “α2”
*
2: Diameter made by intersection point of conic angles “α2” and “α3”
*
3: Machining data
VALVE SPRING
Items Standard Oversize (Service) [0.5 (0.020)]
Cylinder head seat recess diameter “D”Intake 38.000 - 38.016 (1.4961 - 1.4967) 38.500 - 38.516 (1.5157 - 1.5164)
Exhaust 31.600 - 31.616 (1.2441 - 1.2447) 32.100 - 32.116 (1.2638 - 1.2644)
Valve seat outer diameter “d”Intake 38.097 - 38.113 (1.4999 - 1.5005) 38.597 - 38.613 (1.5196 - 1.5202)
Exhaust 31.680 - 31.696 (1.2472 - 1.2479) 32.180 - 32.196 (1.2669 - 1.2676)
Valve seat interference fitIntake 0.081 - 0.113 (0.0032 - 0.0044)
Exhaust 0.064 - 0.096 (0.0025 - 0.0038)
Diameter “d1”*
1Intake 34.6 (1.362)
Exhaust 27.7 (1.091)
Diameter “d2”*
2Intake 35.9 - 36.4 (1.413 - 1.433)
Exhaust 29.3 - 29.8 (1.154 - 1.173)
Angle “α1”Intake 60°
Exhaust 60°
Angle “α2”Intake 88°45′ - 90°15′
Exhaust 88°45′ - 90°15′
Angle “α3”Intake 120°
Exhaust 120°
Contacting width “W”*
3Intake 1.0 - 1.4 (0.039 - 0.055)
Exhaust 1.2 - 1.6 (0.047 - 0.063)
Height “h”Intake 5.9 - 6.0 (0.232 - 0.236) 5.0 - 5.1 (0.197 - 0.201)
Exhaust 5.9 - 6.0 (0.232 - 0.236) 4.9 - 5.0 (0.193 - 0.197)
Depth “H”6.0 (0.236)
PBIC2745E
Items Standard
Free height 47.07 mm (1.8531 in)
Installation height 37.00 mm (1.4567 in)
Installation load 166 - 188 N (16.9 - 19.2 kg, 37 - 42 lb)
Height during valve open 27.20 mm (1.0709 in)
Load with valve open 373 - 421 N (38.0 - 42.9 kg, 84 - 95 lb)

EXL-10
< BASIC INSPECTION >[XENON TYPE]
INSPECTION AND ADJUSTMENT
SENSOR INITIALIZE : Description
INFOID:0000000003774311
HEADLAMP AIMING CONTROL SYSTEM
Perform the sensor initialize when installing, removing and replacing the auto levelizer control unit and sus-
pension components.
SENSOR INITIALIZE : Special Repair Requirement (HEADLAMP AIMING CONTROL
SYSTEM)
INFOID:0000000003774312
1.VEHICLE CONDITION CHECK
1. Park the vehicle in the straight-forward position.
2. Unload the vehicle (no passenger aboard).
>> GO TO 2.
2.SENSOR INITIALIZE
CONSULT-III WORK SUPPORT
1. Select "SENSOR INITIALIZE" of HEADLAMP LEVELIZER work support item.
2. Select "START".
3. When "INITIALIZE COMPLETE", select "END".
CAUTION:
If "INITIALIZE NOT DONE" is indicated, auto levelizer control unit detects that the sensor lever sig-
nal changes. The sensor initialize is cancelled. In this case, turn the ignition switch OFF to prevent
the vehicle from the height change. Perform the sensor initialize again.
Is the sensor initialize completed?
YES >> GO TO 3.
NO >> Perform the sensor initialize again.
3.SELF-DIAGNOSIS RESULT CHECK
Perform the self-diagnosis with CONSULT-III. Check that any DTC is not detected.
Is any DTC detected?
YES >> GO TO 2.
NO >> Sensor initialize completed

HEADLAMP AIMING CONTROL SYSTEM (AUTO)
EXL-15
< FUNCTION DIAGNOSIS >[XENON TYPE]
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HEADLAMP AIMING CONTROL SYSTEM (AUTO)
System DiagramINFOID:0000000003774320
System DescriptionINFOID:0000000003774321
OUTLINE
 Headlamp aiming control system is controlled by auto levelizer control unit.
 Auto levelizer control unit controls the headlamp light axis height appropriately depending on the vehicle rear
height.
 Auto levelizer control unit detects the vehicle condition necessary for the aiming motor control with the fol-
lowing signals.
- Sensor lever signal (detected by the sensor lever)
- Tail lamp signal (inputted from IPDM E/R)
- Vehicle speed signal (8-pulse) (inputted from combination meter)
HEADLAMP AUTO AIMING OPERATION
 Auto levelizer control unit calculates vehicle pitch angle from sensor lever signal and determines the neces-
sary correction to compensate the deviation from standard light axis position.
 Auto levelizer control unit outputs aiming motor drive signal when operating conditions are satisfied.
Operating condition
- Ignition switch ON
- Tail lamp ON
 Auto levelizer control unit changes the aiming motor drive signal when any of the correcting condition is
detected. Output is maintained if other condition is detected.
Correcting condition- Tail lamp is turned ON.
- Vehicle posture becomes stable after the vehicle posture change is detected with the tail lamp ON and the
vehicle stopped.
- Vehicle speed is maintained with the tail lamp ON and the vehicle driven.
CAUTION:
Adjusted axis position may differ from the preset position although the headlamp auto aiming acti-
vates properly when the suspension is replaced or worn.
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