NISSAN TEANA 2008 Service Manual

EM-106
< DISASSEMBLY AND ASSEMBLY >
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
EM-107
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CYLINDER BLOCK
Exploded ViewINFOID:0000000003802293
VQ25DE
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EM-108
< DISASSEMBLY AND ASSEMBLY >
CYLINDER BLOCK
VQ35DE
1. Reinforcement plate 2. Drive plate 3. Rear oil seal retainer
4. Cylinder block 5. Knock sensor 6. Sub harness
7. Thrust bearing (upper) 8. Main bearing (upper) 9. Crankshaft
10. Crankshaft key 11. Thrust bearing (lower) 12. Main bearing (lower)
13. Main bearing cap 14. Main bearing cap bolt 15. Main bearing beam
16. Baffle plate 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
A. Crankshaft side B. Chamfered C. Refer to EM-110
D. Front mark
Refer to GI-4, "
Components" for symbols in the figure.

CYLINDER BLOCK
EM-109
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1. Reinforcement plate 2. Drive plate 3. Rear oil seal retainer
4. Sub harness 5. Knock sensor 6. Cylinder block
7. Thrust bearing (upper) 8. Main bearing (upper) 9. Crankshaft
10. Crankshaft key 11. Thrust bearing (lower) 12. Main bearing (lower)
13. Main bearing cap 14. Main bearing cap bolt 15. Main bearing beam
16. Baffle plate 17. Connecting rod bolt 18. Connecting rod bearing cap
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EM-110
< DISASSEMBLY AND ASSEMBLY >
CYLINDER BLOCK
Disassembly and Assembly
INFOID:0000000003802294
DISASSEMBLY
1. Remove the following parts:
 Intake manifold collector: Refer to EM-28, "
Exploded View".
 Intake manifold: Refer to EM-32, "
Exploded View".
 Oil pans (lower and upper): Refer to EM-38, "
Exploded View".
 Front and rear timing chain case: Refer to EM-79, "
Exploded View".
 Cylinder head: Refer to EM-96, "
Exploded View".
2. Remove knock sensor.
CAUTION:
Carefully handle sensor avoiding shocks.
3. 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.
4. Remove baffle plate from main bearing beam.
5. Remove piston and connecting rod assembly with the following procedure:
 Before removing piston and connecting rod assembly, check the connecting rod side clearance. Refer to
EM-119, "
Inspection".
CAUTION:
Be careful not to drop connecting rod bearing, and to scratch the surface.
a. Position crankshaft pin corresponding to connecting rod to be removed onto the bottom dead center.
b. Remove connecting rod bearing cap.
c. Using a 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.
6. Remove connecting rod bearings from connecting rod and connecting rod bearing cap.
CAUTION:
 Be careful not to drop connecting rod bearing, and to scratch the surface.
 Identify installation positions, and store them without mixing them up.
7. Remove piston rings form piston.
 Before removing piston rings, check the piston ring side clearance. Refer to EM-119, "
Inspection".
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
A. Crankshaft side B. Chamfered C. Refer to EM-110
D. Front mark
Refer to GI-4, "
Components" for symbols in the figure.
EMQ0191D

CYLINDER BLOCK
EM-111
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 Use a piston ring expander (commercial service tool) (A).
CAUTION:
 When removing piston rings, be careful not to damage
piston.
 Be careful not to damage piston rings by expanding them
excessively.
8. Remove piston from connecting rod as follows:
a. Using a snap ring pliers (A), remove snap rings.
b. Heat piston to 60 to 70°C (140 to 158°F) with an industrial use
drier (A) or equivalent.
c. Push out piston pin with stick of outer diameter approximately 20
mm (0.79 in).
9. Remove main bearing cap bolts.
NOTE:
 Before loosening main bearing cap bolts, measure the crankshaft end play. Refer to EM-119, "
Inspec-
tion".
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EM-112
< DISASSEMBLY AND ASSEMBLY >
CYLINDER BLOCK
 Loosen main bearing cap bolts in the reverse order shown in
the figure in several different steps.
10. Remove main bearing beam.
11. Remove main bearing caps.
CAUTION:
Be careful not to drop main bearing, and to scratch the sur-
face.
 Using main bearing cap bolts, remove main bearing cap while
shaking it back-and-forth.
12. Remove crankshaft.
13. Remove main bearings and thrust bearings from cylinder block and main bearing caps.
CAUTION:
 Be careful not to drop main bearing, and to scratch the surface.
 Identify installation positions, and store them without mixing them up.
14. Remove oil jet. (VQ35DE)
ASSEMBLY
1. Fully air-blow engine coolant and engine oil passages in cylinder block, cylinder bore and crankcase to
remove any foreign material.
CAUTION:
Use a goggles to protect your eye.
: Engine front
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CYLINDER BLOCK
EM-113
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2. Install each plug to cylinder block as shown in the figure.
 Apply sealant to the thread of water drain plug (A).
Use Genuine Liquid Gasket or equivalent.
 Apply sealant to the thread of connector bolt (D).
Use Genuine Liquid Gasket or equivalent.
 Apply sealant to the thread of plug (C).
Use high strength thread locking sealant or equivalent.
 Replace washers with new one.
 Tighten each plug and connector bolt as specified below.
3. Install oil jet. (VQ35DE)
 Insert oil jet dowel pin (A) into cylinder block dowel pin hole,
and tighten mounting bolts.
4. Install main bearings and thrust bearings as follows:
CAUTION:
Be careful not to drop main bearing, and to scratch the surface.
a. Remove dust, dirt, and engine oil on bearing mating surfaces of cylinder block and main bearing caps.
B : Water drain plug
PBIC2487E
Part Washer Tightening torque
A Yes 62.0 N·m (6.3 kg-m, 46 ft-lb)
B No 9.8 N·m (1.0 kg-m, 87 in-lb)
C Yes 62.0 N·m (6.3 kg-m, 46 ft-lb)
D No 39.2 N·m (4.0 kg-m, 29 ft-lb)
: Engine front
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EM-114
< DISASSEMBLY AND ASSEMBLY >
CYLINDER BLOCK
b. Install thrust bearings (1) to the both sides of the No. 3 journal
housing on cylinder block and main bearing cap.
 Install thrust bearings with the oil groove (E) facing crankshaft
arm (outside).
 Install thrust bearing with a projection on one end on cylinder block, and thrust bearing with a projection
at center on main bearing cap. Align each projection with mating notch.
c. Install main bearings paying attention to the direction.
 Main bearing with oil hole (B) and groove (C) goes on cylinder
block. The one without them goes on main bearing cap.
 Before installing main bearings, apply engine oil to the bearing
surface (inside). Do not apply engine oil to the back surface,
but thoroughly clean it.
 When installing, align main bearing stopper protrusion to cut-
out of cylinder block and main bearing caps.
 Ensure the oil holes on cylinder block and those on the corresponding bearing are aligned.
5. Install crankshaft to cylinder block.
 While turning crankshaft by hand, check that it turns smoothly.
6. Install main bearing caps.
 Main bearing caps are identified by identification mark cast on
them. For installation, face front mark (E) to front side.
NOTE:
Main bearing cap cannot be replaced as a single part, because it
is machined together with cylinder block.
7. Install main bearing beam.
 Install main bearing beam with front mark facing downward (oil pan side).
 Install main bearing beam with front mark facing front of the
engine.
A : No. 1
B : No. 2
C : No. 3
D : No. 4
F : Thrust bearing installation position
: Engine front
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A : Cylinder block side
D : Main bearing cap side
: Engine front
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A : No. 1
B : No. 2
C : No. 3
D : No. 4
: Engine front
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CYLINDER BLOCK
EM-115
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8. Install main bearing cap bolts in numerical order as shown in the
figure as follows:
a. Inspect the outer diameter of main bearing cap bolt. Refer to
EM-119, "
Inspection".
b. Apply new engine oil to threads and seat surfaces of main bear-
ing cap bolts.
c. Tighten main bearing cap bolts in several different steps.
d. Turn all main bearing cap bolts 90 degrees clockwise (angle tightening).
CAUTION:
Use the angle wrench [SST: KV10112100 (BT8653-A)] to
check tightening angle. Never make judgment by visual
inspection.
 After installing main bearing cap bolts, check that crankshaft
can be rotated smoothly by hand.
 Check the crankshaft end play. Refer to EM-119, "
Inspection".
9. Install piston to connecting rod as follows:
a. Using snap ring pliers, install new snap ring to the groove of piston rear side.
 Insert it fully into groove to install.
b. Install piston to connecting rod.
 Using an industrial drier or similar tool, heat piston until piston pin can be pushed in by hand without
excess force [approximately 60 to 70°C (140 to 158°F)]. From the front to the rear, insert piston pin into
piston and connecting rod.
 Assemble so that the front mark on the piston crown and the
cylinder number on connecting rod are positioned as shown in
the figure.
c. Install new snap ring to the groove of the piston front side.
 Insert it fully into groove to install.
 After installing, check that connecting rod moves smoothly.
10. Using a piston ring expander (commercial service tool) (A),
install piston rings.
CAUTION:
 When installing piston rings, be careful not to damage
piston.
 Be careful not to damage piston rings by expending them
excessively.
: Engine front
: 35.3 N·m (3.6 kg-m, 26 ft-lb)
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SEM838F
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