NISSAN TEANA 2003 Service Manual

ENGINE ASSEMBLY
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ENGINE ASSEMBLYPFP:10001
Removal and InstallationBBS004WA

Refer to GI-10, "Components" for symbol marks in the figure.
WARNING:

Situate vehicle on a flat and solid surface.

Place chocks at front and back of rear wheels.

For engines not equipped with engine slingers, attach proper slingers and bolts described in
PARTS CATALOG.
CAUTION:

Always be careful to work safely, avoid forceful or uninstructed operations.
1. Engine mounting bracket (rear) 2. Engine mounting insulator (RH) 3. Engine mounting bracket (RH)
4. Engine mounting bracket (front) 5. Stopper 6. Engine mounting insulator (front)
7. Engine mounting bracket (LH) 8. Engine mounting insulator (LH) 9. Stopper
10. Engine mounting air guide 11. Engine mounting insulator (rear) 12. Stopper
13. Bracket
A. VQ35DE B. Front mark C. VQ23DE
D. To transaxle
PBIC4525E

EM-224
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ENGINE ASSEMBLY


Do not start working until exhaust system and engine coolant are cool enough.

If items or work required are not covered by the engine section, refer to the applicable sections.

Always use the support point specified for lifting.

Use either 2-pole lift type or separate type lift as best you can. If board-on type is used for
unavoidable reasons, support at the rear axle jacking point with transmission jack or similar tool
before starting work, in preparation for the backward shift of center of gravity.

For supporting points for lifting and jacking point at rear axle, refer to GI-37, "Garage Jack and
Safety Stand and 2-Pole Lift" .
REMOVAL
Outline
At first, remove engine and transaxle assembly with front suspension member from vehicle downward. Sepa-
rate front suspension member, and then separate engine from transaxle.
Preparation
1. Release fuel pressure. Refer to EC-392, "FUEL PRESSURE RELEASE" .
2. Drain engine coolant from radiator. Refer to CO-34, "
Changing Engine Coolant" .
CAUTION:

Perform this step when engine is cold.

Do not spill engine coolant on drive belts.
3. Remove the following parts:

Engine cover; Refer to EM-133, "INTAKE MANIFOLD COLLECTOR" .

Hood assembly; Refer to BL-13, "HOOD" .

Front road wheels and tires.

Undercover and splash guards (RH and LH).

Air duct (inlet), air cleaner case (upper) with mass air flow sensor and air duct assembly; Refer to EM-
131, "AIR CLEANER AND AIR DUCT" .

Battery, battery tray and battery tray bracket; Refer to SC-4, "BATTERY" .

Drive belts; Refer to EM-128, "DRIVE BELTS" .

Radiator, reservoir of radiator; Refer to CO-37, "RADIATOR" .

Front wiper arm; Refer to WW-4, "FRONT WIPER AND WASHER SYSTEM" .

Cowl top cover. Refer to EI-21, "COWL TOP" .
4. Disconnect engine room harness at the ECM side.
CAUTION:
To keep clean harness connector and avoid damage and foreign materials, cover them completely
with plastic bags or something similar.
Engine Room
1. Disconnect heater hoses. Refer to CO-52, "WATER OUTLET AND WATER PIPING" .

Install plug to avoid leakage of engine coolant.
2. Remove EVAP hose. Refer to EM-133, "
INTAKE MANIFOLD COLLECTOR" .
3. Disconnect fuel feed hose (with fuel damper) quick connector at centralized under-floor piping side. Refer
to EM-155, "
FUEL INJECTOR AND FUEL TUBE" .

Install plug to avoid leakage of fuel.
4. Disconnect shift control cable at transaxle side. Refer to AT- 2 1 3 , "
SHIFT CONTROL SYSTEM" .
5. Disconnect brake booster vacuum hose at engine side. Refer to EM-133, "
INTAKE MANIFOLD COLLEC-
TOR" .
6. Remove IPDM E/R mounting bolt and IPDM E/R bracket mounting bolts, and move it to aside. Refer to
PG-17, "
IPDM E/R (INTELLIGENT POWER DISTRIBUTION MODULE ENGINE ROOM)" .
7. Remove alternator. Refer to SC-27, "
CHARGING SYSTEM" .
8. Remove A/C compressor with piping connected, and temporarily secure it to aside. Refer to ATC-133,
"Components" .
9. Disconnect suction hoses of power steering oil pump at reservoir tank side.

Install plug to avoid leakage of power steering fluid.

ENGINE ASSEMBLY
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Vehicle Underbody
1. Remove front drive shafts (right and left sides). Refer to FAX-8, "FRONT DRIVE SHAFT" .
2. Remove front exhaust tube. Refer to EX-2, "
EXHAUST SYSTEM" .
3. Disconnect steering lower joint at power steering gear assembly side, and release steering lower shaft.
Refer to PS-17, "
POWER STEERING GEAR AND LINKAGE" .
4. Disconnect front stabilizer connecting rod. Refer to FSU-16, "
STABILIZER BAR" .
5. Disconnect power steering piping at a point between vehicle and engine. Refer to PS-39, "
HYDRAULIC
LINE" .

Install plug to avoid leakage of power steering fluid.
6. Remove crankshaft position sensor (POS).
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.
Removal Work
1. Install engine slingers into front of cylinder head (right bank) and
rear of cylinder head (left bank).
2. Lift with hoist and secure engine in position.
3. Use manual lift table caddy (commercial service tool) or equiva-
lently rigid tool such as transmission jack. Securely support bot-
tom of front suspension member, and simultaneously adjust
hoist tension.
CAUTION:
Put a piece of wood or something similar as the supporting
surface, secure a completely stable condition.
4. Separate engine mounting insulator (RH) and engine mounting bracket (RH).
5. Remove engine mounting (LH) through-bolt. (VQ23DE)
PBIC2483E
PBIC2484E

EM-226
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ENGINE ASSEMBLY

6. Remove front suspension member mounting nuts and bolts. Refer to FSU-5, "FRONT SUSPENSION
ASSEMBLY" .
7. Carefully lower engine, transaxle and front suspension member assembly. When performing work,
observe the following caution.
CAUTION:

Confirm there is no interference with vehicle.

Make sure that all connection points have been disconnected.

Keep in mind the center of vehicle gravity changes. If necessary, use jack(s) to support vehicle
at rear jacking point(s) to prevent it from falling it off the lift.
Separation Work
1. Remove power steering oil pump, power steering piping and power steering bracket from engine and tran-
saxle assembly. Refer to PS-39, "
HYDRAULIC LINE" .
2. Remove starter motor. Refer to SC-14, "
STARTING SYSTEM" .
3. Disconnect harness connector of engine mounting insulators (front and rear).
4. Remove engine mounting (front) and engine mounting (rear) through-bolts.
5. Lift with hoist and separate engine and transaxle assembly from front suspension member.
CAUTION:
Before and during this lifting, always make sure that any harnesses are not connected.
6. Remove each engine mounting insulator and each engine mounting bracket from engine, transaxle and
front suspension member.
7. Separate engine and transaxle. Refer to AT- 2 4 1 , "
TRANSAXLE ASSEMBLY" (A/T), CVT-193, "TRAN-
SAXLE ASSEMBLY" (CVT).
INSTALLATION
Note the following, and install in the reverse order of removal.

Do not allow engine mounting insulator to be damage and careful no engine oil gets on it.

For a path with a specified installation orientation, refer to component figure in EM-223, "Removal and
Installation" .

Make sure all engine mounting insulators are seated properly, then tighten nuts and bolts.
INSPECTION AFTER INSTALLATION
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.

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.

ENGINE ASSEMBLY
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Summary of the inspection items:
* Transmission/transaxle/CVT fluid. power steering fluid, brake fluid, etc.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 —

EM-228
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CYLINDER BLOCK

CYLINDER BLOCKPFP:11010
Disassembly and AssemblyBBS004WB
PBIC2809E

CYLINDER BLOCK
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DISASSEMBLY
NOTE:
Show VQ35DE (with main bearing beam, connecting rod bearing cap is tighten by bolts) as an example unless
the figure includes specification.
1. Remove engine assembly from vehicle, and separate front suspension member and transaxle from
engine. Refer to EM-223, "
ENGINE ASSEMBLY" .
2. Remove exhaust manifolds (right and left banks). Refer to EM-140, "
EXHAUST MANIFOLD AND THREE
WAY CATALYST" .
3. Install engine sub-attachment with engine stand shaft (SST) to
right side of cylinder block.

Use spacer to engine front side.
4. Lift engine, and mount it onto engine stand (SST).
1. Reinforcement plate 2. Drive plate 3. Rear oil seal retainer
4. Knock sensor 5. Cylinder block 6. Thrust bearing (upper)
7. Main bearing (upper) 8. Crankshaft 9. Key
10. Thrust bearing (lower) 11. Main bearing (lower) 12. Main bearing cap
13. Main bearing cap bolt 14. Main bearing beam 15. Baffle plate
16. Connecting rod nut 17. Connecting rod bolt 18. Connecting rod bearing cap
19. Connecting rod bearing 20. Connecting rod 21. Snap ring
22. Piston pin 23. Piston 24. Oil ring
25. Second ring 26. Top ring 27. Pilot converter
28. Oil jet
PBIC2486E
PBIC2618E

EM-230
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CYLINDER BLOCK


A widely use engine stand can be used.
CAUTION:
Use engine stand that has a load capacity [approximately
220 kg (441 lb) or more] large enough for supporting the
engine weight.
NOTE:
This example is engine stand for holding at transaxle mount-
ing side with drive plate removed.
5. Drain engine oil. Refer to LU-21, "
Changing Engine Oil" .
6. Drain engine coolant by removing water drain plugs from cylin-
der block both sides at “A” and “D” and cylinder block front side
at “B” as shown in the figure.
NOTE:
Water drain plug at the right bank side for VQ35DE is also used
as a connector of water pipe for oil cooler. Refer to LU-23, "
OIL
COOLER (VQ35DE)" .
7. Remove drive plate. Fix crankshaft pulley with pulley holder [SST: KV10109300], and remove mounting
bolts.

Loosen mounting bolts in diagonal order.
CAUTION:

Do not disassemble drive plate.

Do not place drive plate with signal plate facing down.

When handling signal plate, take care not to damage or
scratch it.

Handle signal plate in a manner that prevents it from
becoming magnetized.
8. Remove cylinder head. Refer to EM-210, "
CYLINDER HEAD" .
9. Remove knock sensor.
CAUTION:
Carefully handle sensor avoiding shocks.
PBIC0085E
PBIC2487E
SEM760G

CYLINDER BLOCK
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10. Remove pilot converter using pilot bushing puller (SST) or suit-
able tool as necessary.
11. Remove rear oil seal retainer.

Remove by inserting screwdriver between main bearing cap and rear oil seal retainer.
CAUTION:
If rear oil seal retainer is removed, replace it with new one.
NOTE:
Regard both rear oil seal and retainer as an assembly.
12. Remove piston and connecting rod assembly as follows:

Before removing piston and connecting rod assembly, check the connecting rod side clearance. Refer
to EM-245, "
CONNECTING ROD SIDE CLEARANCE" .
a. Position crankshaft pin corresponding to connecting rod to be removed onto the bottom dead center.
b. Remove connecting rod bearing cap.
c. Using hammer handle or similar tool, push piston and connect-
ing rod assembly out to the cylinder head side.
CAUTION:
Be careful not to damage the cylinder wall and crankshaft
pin, resulting from an interference of the connecting rod big
end.
13. Remove connecting rod bearings from connecting rod and connecting rod bearing cap.
CAUTION:
Identify installation position, and store them without mixing them up.
14. Remove piston rings form piston.

Before removing piston rings, check the piston ring side clearance. Refer to EM-246, "PISTON RING
SIDE CLEARANCE" .

Use piston ring expander (commercial service tool).
CAUTION:

When removing piston rings, be careful not to damage
piston.

Be careful not to damage piston rings by expanding them
excessively.
15. Remove piston from connecting rod as follows:
PBIC1618E
EMQ0191D
PBIC0087E

EM-232
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CYLINDER BLOCK

a. Using snap ring pliers, remove snap ring.
b. Heat piston to 60 to 70°C (140 to 158°F) with industrial use drier
or equivalent.
c. Push out piston pin with stick of outer diameter approximately 20
mm (0.79 in).
16. Remove main bearing cap bolts.
NOTE:
Use TORX socket (size E14).

Before loosening main bearing cap bolts, measure crankshaft end play. Refer to EM-245, "CRANK-
SHAFT END PLAY" .

Loosen bolts in reverse order as shown in the figure in several
different steps.
PBIC1638E
PBIC1639E
PBIC0262E
PBIC1800E