2003 NISSAN TEANA Cylinder head

SERVICE DATA AND SPECIFICATIONS (SDS)
EM-261
[VQ]
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EM

Valve Guide
Unit: mm (in)
Items Standard Oversize (Service) [0.2 (0.008)]
Valve guideOuter diameter 10.023 - 10.034 (0.3946 - 0.3950) 10.223 - 10.234 (0.4025 - 0.4029)
Inner diameter (Finished size) 6.000 - 6.018 (0.2362 - 0.2369)
Cylinder head valve guide hole diameter 9.975 - 9.996 (0.3927 - 0.3935) 10.175 - 10.196 (0.4006 - 0.4014)
Interference fit of valve guide 0.027 - 0.059 (0.0011 - 0.0023)
Items Standard Limit
Valve guide clearanceIntake 0.020 - 0.053 (0.0008 - 0.0021) 0.08 (0.003)
Exhaust 0.030 - 0.063 (0.0012 - 0.0025) 0.10 (0.004)
Projection length “L” 12.6 - 12.8 (0.496 - 0.504)
SEM950E

EM-262
[VQ]
SERVICE DATA AND SPECIFICATIONS (SDS)

Valve Seat
Unit: mm (in)
*
1 : Diameter made by intersection point of conic angles “α1” and “α2”
*2: Diameter made by intersection point of coind angles “α1” and “α2” ItemsStandard Oversize (Service) [0.5 (0.020)]
VQ23DE VQ35DE VQ23DE VQ35DE
Cylinder head seat recess diameter “D”Intake35.000 - 35.016
(1.3780 - 1.3786)38.000 - 38.016
(1.4961 - 1.4967)35.500 - 35.516
(1.3976 - 1.3983)38.500 - 38.516
(1.5157 - 1.5164)
Exhaust30.000 - 30.016
(1.1811 - 1.1817)32.200 - 32.216
(1.2677 - 1.2683)30.500 - 30.516
(1.2008 - 1.2014)32.700 - 32.716
(1.2874 - 1.2880)
Valve seat outer diameter “d”Intake35.080 - 35.096
(1.3811 - 1.3817)38.097 - 38.113
(1.4999 - 1.5005)35.580 - 35.596
(1.4008 - 1.014)38.597 - 38.613
(1.5196 - 1.5202)
Exhaust30.080 - 30.096
(1.1842 - 1.1849)32.280 - 32.296
(1.2709 - 1.2715)30.580 - 30.596
(1.2039 - 1.2046)32.780 - 32.796
(1.2905 - 1.2912)
Valve seat interference fitIntake0.064 - 0.096
(0.0025 - 0.0038)0.081 - 0.113
(0.0032 - 0.0044)0.064 - 0.096
(0.0025 - 0.0038)0.081 - 0.113
(0.0032 - 0.0044)
Exhaust 0.064 - 0.096 (0.0025 - 0.0038)
ItemsStandard
VQ23DE VQ35DE
Diameter″ d1 ″*
1Intake 32 (1.26) 35 (1.38)
Exhaust 26.5 (1.043) 28.7 (1.130)
Diameter″ d2 ″*
2Intake 33.3 – 33.8 (1.311 – 1.331) 36.3 – 36.8 (1.429 – 1.449)
Exhaust 28.1 – 28.6 (1.106 – 1.126) 30.3 – 30.8 (1.193 – 1.213)
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)
ItemsStandard Service
VQ23DE VQ35DE VQ23DE VQ35DE
Height “h”Intake6.2 - 6.3
(0.244 - 0.248)5.9 - 6.0
(0.232 - 0.236)5.4 - 5.5
(0.213 - 0.217)5.05 - 5.15
(0.1988 - 0.2028)
Exhaust5.9 - 6.0
(0.232 - 0.246)5.9 - 6.0
(0.232 - 0.236)4.95 - 5.05
(0.1949 - 0.1988)4.95 - 5.05
(0.1949 - 0.1988)
Depth “H”Intake 6.35 (0.2500) 6.0 (0.246) 6.35 (0.2500) 6.0 (0.246)
Exhaust 6.0 (0.246)
PBIC2745E

IDX-3
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IDX
ALPHABETICAL INDEX
CAN (Controller Area Network) . BL-23, BL-48, BL-77,
GW-56
, SE-16
CAN communication EC-113, EC-458, AT-27, CVT-19,
CVT-53
, BL-23, BL-48, BL-77, GW-56, SE-16, WW-9
Canister-See EVAP canister ............... EC-29, EC-369
CHARGE - Wiring diagram ................................ SC-28
Charging system ................................................ SC-27
Chassis and body maintenance ........................ MA-35
CHIME - Wiring diagram ..................................... DI-60
CIGAR - Wiring diagram .................................. WW-60
Cigarette lighter ............................................... WW-60
Circuit breaker ................................................... PG-16
Closed loop control .............................. EC-22, EC-359
Collision diagnosis ........................................... SRS-55
Combination meter ............................................... DI-4
COMM - Wiring diagram ........................ AV-49, AV-73
Component Location (auto A/C) ...................... ATC-36
Compression pressure(QR20DE) ...................... EM-65
Compression pressure(VQ23DE and VQ35DE) ...........
EM-210
Compressor clutch removal and installation .. ATC-136
Compressor special service tool ...................... ATC-15
Condenser ..................................................... ATC-142
Connecting rod bearing clearance(QR20DE) .. EM-105
Connecting rod bearing clearance(VQ23DE and
VQ35DE) ......................................................... EM-251
Connecting rod bushing clearance(QR20DE) . EM-101
Connecting rod bushing clearance(VQ23DE and
VQ35DE) ......................................................... EM-247
Connecting rod(QR20DE) ............................... EM-101
Connecting rod(VQ23DE and VQ35DE) ......... EM-247
CONSULT-II for engine ....................... EC-80, EC-425
CONSULT-II Reference value (CVT) .............. CVT-43
Control units (terminal arrangement) ................. PG-74
Control valve (CVT) ......................................... CVT-23
Controller Area Network (CAN) . BL-23, BL-48, BL-77,
GW-56
, SE-16
Converter housing installation ............ AT-244, AT-355
COOL/F - Wiring diagram .................. EC-222, EC-579
Coolant mixture ratio ......................................... MA-15
Coolant replacement(QR20DE) ......................... MA-16
Coolant replacementVQ35DE ........................... MA-25
Cooling circuit (engine)(QR20DE) ....................... CO-8
Cooling circuit (engine)(VQ32DE and VQ35DE) CO-32
Cooling fan control ........................................... EC-575
Cooling fan motor ............................................ EC-575
Cooling fan relay .............................................. EC-575
Cooling fan(QR20DE) ........................................ CO-20
Cooling fan(VQ23DE and VQ35DE) .................. CO-44
Cowl top ............................................................... EI-21
Cowl top cover ..................................................... EI-21
Crankcase ventilation system - See Positive crankcase
ventilation ............................................ EC-30
, EC-370
Crankshaft position sensor (POS) ..... EC-169, EC-517
Crankshaft(QR20DE) ...................................... EM-104
Crankshaft(VQ23DE and VQ35DE) ................ EM-251
Crash zone sensor .......................................... SRS-44
CVT air breather hose ................................... CVT-186
CVT control system ......................................... CVT-16
CVT cross-sectional view ................................ CVT-15
CVT Electrical parts location ............................ CVT-30
CVT fluid checking ................ CVT-13, CVT-32, MA-36
CVT Fluid Cooler ........................................... CVT-189
CVT fluid replacement ........................ CVT-14, MA-38
CVT fluid temparature sensor .......................... CVT-69
CVT hydraulic control system .......................... CVT-17
CVT indicator ...................................................... DI-52
CVT self-diagnoses ......................................... CVT-47
CVT shift lock system .................................... CVT-180
CVT trouble diagnoses .................................... CVT-24
CVTIND - Wiring diagram ................................... DI-52
Cylinder block boring(QR20DE) ..................... EM-104
Cylinder block(QR20DE) .................................. EM-81
Cylinder block(VQ23DE and VQ35DE) .......... EM-228
Cylinder head bolt tightening(QR20DE) ........... EM-68
Cylinder head bolt tightening(VQ23DE and VQ35DE) .
EM-213
Cylinder head(QR20DE) ................................... EM-65
Cylinder head(VQ23DE and VQ35DE) ........... EM-210
D
D/LOCK - Wiring diagram .................................. BL-25
Diagnosis sensor unit ..................................... SRS-47
Diagnostic trouble code (DTC) for OBD system EC-10,
EC-34
, EC-347, EC-375
Diagnostic trouble code (DTC) inspection priority chart
EC-58
, EC-400, CVT-24
Differentil side oil seal .................................... CVT-187
Display and amp.assembly ............... ATC-44, ATC-56
Display Control Unit ........................................... AV-61
Display Unit ........................................................ AV-41
Door glass ........................................... GW-46, GW-50
Door glass Fitting Adjustment(Front) ................ GW-49
Door glass Fitting Adjustment(Rear) ................. GW-53
Door lock .......................................................... BL-123
Door mirror .......................................... GW-74, GW-77
Door trim ............................................................. EI-35
Door, front ........................................... BL-119, GW-46
Door, rear ............................................ BL-119, GW-50
Drive belt inspection(QR20DE) ......................... MA-16
Drive belt inspection(VQ23DE and VQ35DE) ... MA-24
Drive belt(QR20DE) .......................................... EM-14
Drive belt(VQ23DE and VQ35DE) .................. EM-128
Drive shaft ......................................................... MA-43
Driver air bag .................................................. SRS-35
Dropping resistor (A/T) .................................... AT-132
Duct and grilles .............................................. ATC-126
E
ECM input/output signal ....................... EC-72
, EC-415
ECM power supply EC-106, EC-193, EC-451, EC-541
ECM/PW - Wiring diagram ................. EC-194, EC-542
ECTS - Wiring diagram ...................... EC-133, EC-476
Electric sunroof .................................................. RF-10
Electric throttle control actuator ........ EC-197, EC-200,
EC-213
, EC-552, EC-555

ENGINE OIL
LU-7
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LU

ENGINE OILPFP:KLA92
InspectionBBS0059P
ENGINE OIL LEVEL
NOTE:
Before starting engine, put vehicle horizontally and check the engine oil level. If engine is already started, stop
it and allow 10 minutes before checking.
1. Pull out oil level gauge and wipe it clean.
2. Insert oil level gauge and make sure the engine oil level is within
the range shown in the figure.
3. If it is out of range, adjust it.
ENGINE OIL APPEARANCE

Check engine oil for white turbidity or heavy contamination.

If engine oil becomes turbid and white, it is highly probable that it is contaminated with engine coolant.
Repair or replace damaged parts.
ENGINE OIL LEAKAGE
Check for engine oil leakage around the following area.

Oil pan

Oil pan drain plug

Oil pressure switch

Oil filter

Intake valve timing control cover and intake valve timing control solenoid valve

Front cover

Mating surface between cylinder block and lower cylinder block

Mating surface between cylinder block and cylinder head

Mating surface between cylinder head and rocker cover

Crankshaft oil seals (front and rear)
OIL PRESSURE CHECK
WARNING:

Be careful not to burn yourself, as engine oil may be hot.

Engine oil pressure check should be in “ Parking position”.
1. Check engine oil level. Refer to LU-7, "
ENGINE OIL LEVEL" .
2. Remove splash guard (RH).
3. Disconnect harness connector at oil pressure switch, and
remove oil pressure switch using deep socket (commercial ser-
vice tool).
PBIC0249E
PBIC2428E

ENGINE OIL
LU-19
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LU

ENGINE OILPFP:KLA92
InspectionBBS004WK
ENGINE OIL LEVEL
NOTE:
Before starting engine, put vehicle horizontally and check the engine oil level. If engine is already started, stop
it and allow 10 minutes before checking.
1. Pull out oil level gauge and wipe it clean.
2. Insert oil level gauge and make sure the engine oil level is within
the range shown in the figure.
3. If it is out of range, adjust it.
ENGINE OIL APPEARANCE

Check engine oil for white turbidity or heavy contamination.

If engine oil becomes turbid and white, it is highly probable that it is contaminated with engine coolant.
Repair or replace damaged parts.
ENGINE OIL LEAKAGE
Check for engine oil leakage around the following areas:

Oil pan

Oil pan drain plug

Oil pressure switch

Oil filter

Oil cooler (VQ35DE)

Water pump cover

Chain tensioner cover

Intake valve timing control cover and intake valve timing control solenoid valve

Mating surface between cylinder block and cylinder head

Mating surface between cylinder head and rocker cover

Mating surface between front timing chain case and rear timing chain case

Mating surface between rear timing chain case and cylinder block

Crankshaft oil seals (front and rear)
PBIC0249E

PS-22
POWER STEERING GEAR AND LINKAGE

10. Remove end cover assembly with a 45 mm (1.77 in) open head
(suitable tool).
CAUTION:
Do not damage rack assembly surface when removing.
Rack assembly must be replaced if damaged because it
may cause fluid leakage.
11. Pull rack assembly together with rack oil seal (outer side) out
from gear housing assembly.
CAUTION:
Do not damage cylinder inner wall when removing rack
assembly. Gear housing assembly must be replaced if dam-
aged because it may cause fluid leakage.
12. Heat rack Teflon ring to approximately 40°C (104°F) with a
dryer, and remove rack Teflon ring and O-ring from rack assem-
bly.
CAUTION:
Do not damage rack assembly. Rack assembly must be
replaced if damaged, because it may cause fluid leakage.
13. Push rack oil seal inside with a 29 mm (1.14 in) socket and an
extension bar to push out rack oil seal (inner side) from gear
housing assembly.
CAUTION:
Do not damage gear housing assembly and cylinder inner
wall. Gear housing assembly must be replaced if damaged
because it may cause oil leakage.
SST081B
SGIA0151E
SGIA0179E