2003 NISSAN TEANA engine

OIL COOLER (VQ35DE)
LU-23
[VQ]
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OIL COOLER (VQ35DE)PFP:21305
Removal and InstallationBBS004WN

Refer to GI-10, "Components" for symbol marks in the figure.
WARNING:
Be careful not to get burn yourself, as engine oil and engine coolant may be hot.
REMOVAL
NOTE:
When removing oil cooler only, step 2 is unnecessary.
1. Remove splash guard (RH).
2. Drain engine coolant from radiator and cylinder block. Refer to CO-34, "
Changing Engine Coolant" and
EM-229, "
DISASSEMBLY" .
NOTE:
Perform this step when removing water pipes.
3. Remove oil filter. Refer to LU-22, "
OIL FILTER" .
CAUTION:
Do not spill engine oil on drive belts.
4. Disconnect water hoses from oil cooler.

When removing oil cooler only, pinching water hoses near oil cooler to prevent engine coolant spilling.
1. Connector bolt 2. Copper gasket 3. Water drain plug
4. Water pipe 5. Bracket 6. Water hose
7. Relief valve 8. O-ring 9. Oil cooler
10. Connector bolt 11. Oil filter 12. Water hose
13. Water pipe 14. Clamp 15. Water hose
16. Clamp
A. Refer to LU-22
:Engine front
PBIC4731E

LU-24
[VQ]
OIL COOLER (VQ35DE)

CAUTION:

Perform this step when engine is cold.

Do not spill engine coolant on drive belts.
5. Remove connector bolt, and remove oil cooler.
CAUTION:
Do not spill engine oil to rubber parts such as drive belts and engine mounting insulator.
6. Remove water pipes, as necessary.
INSPECTION AFTER REMOVAL
Oil Cooler
Check oil cooler for cracks. Check oil cooler for clogging by blowing through engine coolant inlet. If necessary,
replace oil cooler.
Relief Valve
Check relief valve for movement, cracks and breaks by pushing the ball. If replacement is necessary, remove
relief valve by prying it out with suitable tool. Install a new relief valve in place by tapping it.
INSTALLATION
Note the following, and install in the reverse order of removal.

Make sure that no foreign objects are adhering to the installation surfaces of oil cooler and oil pan (upper).

Align cutout on oil cooler with protrusion on oil pan (upper) side,
and tighten connector bolt.
INSPECTION AFTER INSTALLATION
1. Check the engine oil level and the engine coolant level, and add engine oil and engine coolant. Refer to
LU-19, "
ENGINE OIL" and CO-34, "ENGINE COOLANT" .
2. Start engine, and make sure that there is no leaks of engine oil or engine coolant.
3. Stop engine and wait for 10 minutes.
4. Check the engine oil level and the engine coolant level again. Refer to LU-19, "
ENGINE OIL" and CO-34,
"ENGINE COOLANT" .
PBIC2508E

OIL PUMP
LU-25
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OIL PUMPPFP:15010
Removal and InstallationBBS004WO
REMOVAL
1. Remove oil pans (lower and upper) and oil strainer. Refer to EM-145, "OIL PAN AND OIL STRAINER" .
2. Remove front timing chain case and timing chain (primary). Refer to EM-173, "
TIMING CHAIN" .
3. Remove oil pump assembly.
INSTALLATION
Note the following, and install in the reverse order of removal.

When installing, align crankshaft flat faces with inner rotor flat faces.
INSPECTION AFTER INSTALLATION
1. Check the engine oil level. Refer to LU-19, "ENGINE OIL" .
2. Start engine, and check there is no leaks of engine oil.
3. Stop engine and wait for 10 minutes.
4. Check the engine oil level and add engine oil. Refer to LU-19, "
ENGINE OIL" .
Disassembly and AssemblyBBS004WP
DISASSEMBLY
1. Remove oil pump cover.
2. Remove oil pump inner rotor and oil pump outer rotor from oil pump body.
3. After removing regulator valve plug, remove regulator valve spring and regulator valve.
1. Oil pump body 2. Oil pump outer rotor 3. Oil pump inner rotor
4. Oil pump cover 5. Regulator valve plug 6. Regulator valve spring
7. Regulator valve
PBIC2509E

OIL PUMP
LU-27
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Regulator Valve Clearance
(Clearance) = (Valve hole diameter) – (Regulator valve outer diame-
ter)

If calculated value out of the standard, replace oil pump assem-
bly.
CAUTION:

Coat regulator valve with engine oil.

Make sure that it falls smoothly into valve hole by its own
weight.
ASSEMBLY
Note the following, and assemble in the reverse order of disassembly.

Install oil pump inner rotor with the groove faced to oil pump
cover side.Standard:
VQ23DE : 0.025 - 0.070 mm (0.0010 - 0.0028 in)
VQ35DE : 0.040 - 0.097 mm (0.0016 - 0.0038 in)
PBIC0822E
PBIC0832E

LU-28
[VQ]
SERVICE DATA AND SPECIFICATIONS (SDS)

SERVICE DATA AND SPECIFICATIONS (SDS)PFP:00030
Standard and LimitBBS004WQ
OIL PRESSURE
*: Engine oil temperature at 80°C (176°F)
OIL CAPACITY (APPROXIMATE)
Unit: (Imp qt)
OIL PUMP
Unit: mm (in)
REGULATOR VALVE
Unit: mm (in) Engine speed
rpm Approximate discharge pressure*
kPa (bar, kg/cm
2 , psi)
Idle speed More than 98 (0.98, 1.0, 14)
2,000 More than 294 (2.94, 3.0, 43)
Drain and refillWith oil filter change 4.0 (3-1/2)
Without oil filter change 3.7 (3-1/4)
Dry engine (Overhaul)5.0 (4-3/8)
Items VQ23DE VQ35DE
Oil pump body to oil pump outer rotor radial clearance 0.120 - 0.195 (0.0047 - 0.0077) 0.114 - 0.260 (0.0045 - 0.0102)
Oil pump inner rotor to oil pump outer rotor tip clearance 0.060 - 0.160 (0.0024 - 0.0063) Below 0.180 (0.0071)
Oil pump body to oil pump inner rotor side clearance 0.030 - 0.070 (0.0012 - 0.0028)
Oil pump body to oil pump outer rotor side clearance 0.050 - 0.090 (0.0020 - 0.0035) 0.050 - 0.110 (0.0020 - 0.0043)
Oil pump inner rotor to oil pump body clearance 0.045 - 0.091 (0.0018 - 0.0036)
Items VQ23DE VQ35DE
Regulator valve to oil pump body clearance 0.025 - 0.070 (0.0010 - 0.0028) 0.040 - 0.097 (0.0016 - 0.0038)

MA-1
MAINTENANCE
L MAINTENANCE
CONTENTS
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MAINTENANCE
PREPARATION ........................................................... 3
Special Service Tools ............................................... 3
Commercial Service Tools ........................................ 3
DESCRIPTION ............................................................ 4
Pre-Delivery Inspection Items .................................. 4
GENERAL MAINTENANCE ....................................... 6
General Maintenance ............................................... 6
OUTSIDE THE VEHICLE ...................................... 6
INSIDE THE VEHICLE .......................................... 6
UNDER THE HOOD AND VEHICLE .................... 7
PERIODIC MAINTENANCE ....................................... 8
Periodic Maintenance ............................................... 8
ENGINE AND EMISSION CONTROL MAINTE-
NANCE .................................................................. 8
CHASSIS AND BODY MAINTENANCE ............... 9
MAINTENANCE UNDER SEVERE DRIVING
CONDITIONS ...................................................... 10
ENGINE AND EMISSION CONTROL MAINTE-
NANCE ................................................................. 11
CHASSIS AND BODY MAINTENANCE ............. 12
MAINTENANCE UNDER SEVERE DRIVING
CONDITIONS ...................................................... 13
RECOMMENDED FLUIDS AND LUBRICANTS ...... 14
Fluids and Lubricants ............................................. 14
SAE Viscosity Number ........................................... 15
GASOLINE ENGINE ........................................... 15
Anti-Freeze Coolant Mixture Ratio ......................... 15
ENGINE MAINTENANCE (QR20DE) ....................... 16
Checking Drive Belts .............................................. 16
Tension Adjustment ................................................ 16
Changing Engine Coolant ...................................... 16
DRAINING ENGINE COOLANT ......................... 16
REFILLING ENGINE COOLANT ........................ 17
FLUSHING COOLING SYSTEM ......................... 18
Checking Cooling System ...................................... 18
CHECKING COOLING SYSTEM HOSES .......... 19
CHECKING RADIATOR CAP .............................. 19
CHECKING RADIATOR SYSTEM FOR LEAKS ... 20
Checking Fuel Lines ............................................... 20
Changing Air Cleaner Filter .................................... 20VISCOUS PAPER TYPE ..................................... 20
Changing Engine Oil ............................................... 20
Changing Oil Filter .................................................. 21
REMOVAL ........................................................... 21
INSTALLATION ................................................... 22
INSPECTION AFTER INSTALLATION ................ 22
Checking and Changing Spark Plugs ..................... 22
REMOVAL ........................................................... 22
INSPECTION AFTER REMOVAL ....................... 23
INSTALLATION ................................................... 23
Checking EVAP Vapor Lines .................................. 23
ENGINE MAINTENANCE (VQ23DE AND VQ35DE) ... 24
Checking Drive Belts .............................................. 24
Tension Adjustment ................................................ 24
ALTERNATOR AND A/C COMPRESSOR BELT ... 25
POWER STEERING OIL PUMP BELT ................ 25
Changing Engine Coolant ....................................... 25
DRAINING ENGINE COOLANT .......................... 26
REFILLING ENGINE COOLANT ......................... 26
FLUSHING COOLING SYSTEM ......................... 27
Checking Cooling System ...................................... 28
CHECKING COOLING SYSTEM HOSES ........... 28
CHECKING RADIATOR CAP .............................. 28
CHECKING RADIATOR ...................................... 29
CHECKING COOLING SYSTEM FOR LEAKS ... 29
Checking Fuel Lines ............................................... 30
Changing Air Cleaner Filter .................................... 30
VISCOUS PAPER TYPE ..................................... 30
Changing Engine Oil ............................................... 30
Changing Oil Filter .................................................. 31
REMOVAL ........................................................... 31
INSTALLATION ................................................... 31
INSPECTION AFTER INSTALLATION ................ 32
Changing Spark Plug (Platinum-Tipped Type) ....... 32
REMOVAL ........................................................... 32
INSPECTION AFTER REMOVAL ....................... 32
INSTALLATION ................................................... 33
Checking Positive Crankcase Ventilation System ... 33
PCV (POSITIVE CRANKCASE VENTILATION)
VALVE ................................................................. 33

MA-2 PCV VALVE VENTILATION HOSE ...................... 34
Checking EVAP Vapor Lines .................................. 34
CHASSIS AND BODY MAINTENANCE ................... 35
Checking Exhaust System ...................................... 35
Checking A/T Fluid ................................................. 35
Changing A/T Fluid ................................................. 36
Checking CVT Fluid ................................................ 36
Changing CVT Fluid ............................................... 38
Balancing Wheels (Bonding Weight Type) ............. 38
REMOVAL ........................................................... 38
WHEEL BALANCE ADJUSTMENT ..................... 38
Tire Rotation ........................................................... 40
Checking Brake Fluid Level and Leaks .................. 40
Checking Brake Lines and Cables ......................... 40
Changing Brake Fluid ............................................. 40
Checking Disc Brake .............................................. 41
ROTOR ................................................................ 41
CALIPER ............................................................. 41
PAD ..................................................................... 41
Checking Steering Gear and Linkage ..................... 41
STEERING GEAR ............................................... 41
STEERING LINKAGE .......................................... 41
Checking Power Steering Fluid and Lines .............. 42
Axle and Suspension Parts ..................................... 42
Drive Shaft .............................................................. 43
Lubricating Locks, Hinges and Hood Latch ............ 43Checking Seat Belt, Buckles, Retractors, Anchors
and Adjusters .......................................................... 44
Checking Body Corrosion ....................................... 45
HEMMED PANELS .............................................. 45
PANEL JOINT ...................................................... 45
PANEL EDGE ...................................................... 45
PARTS CONTACT ............................................... 45
PROTECTORS .................................................... 45
ANTI-CORROSION MATERIALS ........................ 45
DRAIN HOLES ..................................................... 45
SERVICE DATA AND SPECIFICATIONS (SDS) ...... 46
Standard and Limit .................................................. 46
BELT DEFLECTION (QR20DE) ........................... 46
BELT DEFLECTION (VQ23DE AND VQ35DE) ... 46
ENGINE COOLANT CAPACITY (APPROXI-
MATE) (QR20DE) ................................................ 46
ENGINE COOLANT CAPACITY (APPROXI-
MATE) (VQ23DE AND VQ35DE) ......................... 46
RADIATOR ........................................................... 46
ENGINE OIL CAPACITY (APPROXIMATE)
(QR20DE) ............................................................ 46
ENGINE OIL CAPACITY (APPROXIMATE)
(VQ23DE AND VQ35DE) ..................................... 47
SPARK PLUG (PLATINUM-TIPPED TYPE)
(QR20DE, VQ23DE AND VQ35DE) .................... 47
WHEEL BALANCE .............................................. 47

MA-4
DESCRIPTION

DESCRIPTIONPFP:00000
Pre-Delivery Inspection ItemsBLS0005D
Shown below are Pre-delivery Inspection Items required for the new vehicle. It is recommended that
necessary items other than those listed here be added, paying due regard to the conditions in each
country.
Perform applicable items on each model. Consult text of this section for specifications.
UNDER HOOD — engine off
Radiator coolant level and coolant hose connections for leaks
Battery fluid level, specific gravity and conditions of battery terminals
Drive belts tension
Fuel lines and connections for leaks
Engine oil level and oil leaks
Brake reservoir fluid level and fluid lines for leaks
Windshield and rear window washer and headlamp cleaner reservoir fluid level
Power steering reservoir fluid level and hose connections for leaks
ON INSIDE AND OUTSIDE
Remove front spring/strut spacer (If applicable)
Operation of all instruments, gauges, lights and accessories
Operation of horn(s), wiper and washer
Steering lock for operation
Check air conditioner for gas leaks
Front and rear seats, and seat belts for operation
All moldings, trims and fittings for fit and alignment
All windows for operation and alignment
Hood, trunk lid, door panels for fit and alignment
Latches, keys and locks for operation
Weatherstrips for adhesion and fit
Headlamp aiming
Tighten wheel nuts (Inc. inner nuts if applicable)
Tire pressure (Inc. spare tire)
Check front wheels for toe-in
Install clock/voltmeter/room lamp fuse (If applicable)
Install deodorizing filter to air conditioner (If applicable)
Remove wiper blade protectors (If applicable)
UNDER BODY
Transfer and differential gear oil level
Brake and fuel lines and oil/fluid reservoirs for leaks
Tighten bolts and nuts of steering linkage and gear box, suspension, propeller shafts and drive shafts
Tighten rear body bolts and nuts (Models with wooden bed only)
ROAD TEST
Clutch operation
Parking brake operation
Service brake operation
Automatic transmission/transaxle shift timing and kickdown
Steering control and returnables
Engine performance