NISSAN TEANA 2008 Service Manual

EM-116
< DISASSEMBLY AND ASSEMBLY >
CYLINDER BLOCK
 If there is stamped mark on ring, mount it with marked side up.
NOTE:
If there is no stamp on ring, no specific orientation is required
for installation.
 Position each ring with the gap as shown in the figure referring
to the piston front mark (D).
 Check the piston rings side clearance. Refer to EM-119, "
Inspection".
11. Install connecting rod bearings to connecting rod and connecting rod bearing cap.
CAUTION:
Be careful not to drop connecting rod bearing, and to scratch the surface.
 Before installing connecting rod 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 connecting rod bearing stopper protru-
sion (B) with cutout (C) of connecting rod and connecting rod
bearing cap to install.
 Ensure the oil hole (A) on connecting rod and that on the cor-
responding bearing are aligned.
12. Install piston and connecting rod assembly to crankshaft.
 Position crankshaft pin corresponding to connecting rod to be installed onto the bottom dead center.
 Apply engine oil sufficiently to the cylinder bore, piston and crankshaft pin journal.
 Match the cylinder position with the cylinder number on connecting rod to install.
 Be sure that front mark on piston crown is facing front of engine.
 Using a piston ring compressor [SST: EM03470000 (J8037)]
(A) or suitable tool, install piston with the front mark on the pis-
ton crown facing the front of the engine.
CAUTION:
Be careful not to damage the cylinder wall and crankshaft
pin, resulting from an interference of the connecting rod big
end.Stamped mark: VQ25DE VQ35DE
To p r i n g ( A ) : R : —
Second ring (B) : R 2 : 2 R
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C : Top ring gap
E : Oil ring upper or lower rail gap (either of then)
F : Second ring and oil ring spacer gap
a : 90 degrees
b : 45 degrees
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CYLINDER BLOCK
EM-117
< DISASSEMBLY AND ASSEMBLY >
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13. Install connecting rod bearing cap.
 Match the stamped cylinder number marks on connecting rod
with those on connecting rod bearing cap to install.
 Be sure that front mark (H) on connecting rod bearing cap is facing front of the engine.
14. Tighten connecting rod bolt as follows:
a. Inspect the outer diameter of connecting rod bolt. Refer to EM-119, "
Inspection".
b. Apply engine oil to the threads and seats of connecting rod bolts.
c. Tighten connecting rod bolts.
d. Then tighten all connecting rod bolts 90 degrees clockwise (angle tightening).
CAUTION:
Always use the angle wrench [SST: KV10112100 (BT8653-
A)]. Avoid tightening based on visual check alone.
 After tightening connecting rod bolts, check that crankshaft
rotates smoothly.
 Check the connecting rod side clearance. Refer to EM-119,
"Inspection".
15. Install baffle plate to main bearing beam.
16. Install new rear oil seal retainer to cylinder block. Refer to EM-94, "
REAR OIL SEAL : Removal and Instal-
lation".
17. Install pilot converter.
 With drift [outer diameter: approximately 33 mm (1.30 in)],
press-fit as far as it will go.
A: Sample codes
B : Bearing stopper groove
C : Small-end diameter grade
D : Standard stamp
E : Weight grade
F : Cylinder No.
G : Management code
I : Management code
JPBIA0208ZZ
: 19.6 N·m (2.0 kg-m, 14 ft-lb)
SEM953E
PBIC0899E

EM-118
< DISASSEMBLY AND ASSEMBLY >
CYLINDER BLOCK
 Press-fit pilot converter with its chamfer facing crankshaft as
shown in the figure.
18. Install knock sensors.
 VQ25DE
- Install knock sensor so that connector faces the front of the
engine.
- After installing knock sensor, connect harness connector, and
lay it out to rear of engine.
CAUTION:
 Never tighten mounting bolts while holding connector.
 If any impact by dropping is applied to knock sensor,
replace it with new one.
NOTE:
 Check that there is no foreign material on the cylinder block
mating surface and the back surface of knock sensor.
 Check that knock sensor does not interfere with other parts.
 VQ35DE
- Install knock sensor so that connector faces the rear of the
engine.
- After installing knock sensor, connect harness connector, and
lay it out to rear of engine.
CAUTION:
 Never tighten mounting bolts while holding connector.
 If any impact by dropping is applied to knock sensor,
replace it with new one.
NOTE:
 Check that there is no foreign material on the cylinder block
mating surface and the back surface of knock sensor.
 Check that knock sensor does not interfere with other parts.
19. Note the following, assemble in the reverse order of disassem-
bly after this step.
Drive plate When installing drive plate to crankshaft, be sure to correctly
align crankshaft side dowel pin and drive plate side dowel pin
hole.
- If these are not aligned correctly, engine runs roughly and “MI” turns on.
: Crankshaft side
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PBIC0810E
A: Bank 1
B: Bank 2
: Engine front
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CYLINDER BLOCK
EM-119
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 Install drive plate (2) and reinforcement plate (3) as shown in
the figure.
 Holding ring gear with the pulley holder (commercial service
tool).
 Tighten mounting bolts crosswise over several times.
InspectionINFOID:0000000003802295
CRANKSHAFT END PLAY
 Measure the clearance between thrust bearings and crankshaft
arm when crankshaft is moved fully forward or backward with a dial
indicator.
 If the measured value exceeds the limit, replace thrust bearings,
and measure again. If it still exceeds the limit, replace crankshaft
also.
CONNECTING ROD SIDE CLEARANCE
 Measure the side clearance between connecting rod and crank-
shaft arm with a feeler gauge (A).
 If the measured value exceeds the limit, replace connecting rod,
and measure again. If it still exceeds the limit, replace crankshaft
also.
PISTON TO PISTON PIN OIL CLEARANCE
Piston Pin Hole Diameter
Measure the inner diameter of piston pin hole with an inside
micrometer (A).
Piston Pin Outer Diameter
1 : Ring gear
4 : Pilot converter
5 : Crankshaft
A : Rounded
: Engine front
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Standard and limit : Refer to EM-143, "CylinderBlock".
EMQ0196D
Standard and limit : Refer to EM-143, "CylinderBlock".
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Standard : Refer to EM-143, "CylinderBlock".
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EM-120
< DISASSEMBLY AND ASSEMBLY >
CYLINDER BLOCK
Measure the outer diameter of piston pin with a micrometer (A).
Piston to Piston Pin Oil Clearance
(Piston to piston pin oil clearance) = (Piston pin hole diameter) – (Piston pin outer diameter)
 If the calculated value is out of the standard, replace piston and piston pin assembly.
 When replacing piston and piston pin assembly, refer to EM-129, "
Description".
NOTE:
 Piston is available together with piston pin as assembly.
 Piston pin (piston pin hole) grade is provided only for the parts installed at the plant. For service parts, no
piston pin grades can be selected. (Only “0” grade is available.)
PISTON RING SIDE CLEARANCE
 Measure the side clearance of piston ring (1) and piston ring
groove with a feeler gauge (C).
 If the measured value exceeds the limit, replace piston ring, and
measure again. If it still exceeds the limit, replace piston also.
PISTON RING END GAP
 Check that the cylinder bore inner diameter is within the specification. Refer to EM-143, "CylinderBlock".
 Lubricate with new engine oil to piston (1) and piston ring (2), and
then insert piston ring until middle of cylinder with piston, and mea-
sure the piston ring end gap with a feeler gauge (B).
 If the measured value exceeds the limit, replace piston ring, and
measure again. If it still exceeds the limit, rebore cylinder and use
oversize piston and piston rings.
CONNECTING ROD BEND AND TORSION
Standard : Refer to EM-143, "CylinderBlock".
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Standard : Refer to EM-143, "CylinderBlock".
A: NG
B: OK
Standard and limit : Refer to EM-143, "CylinderBlock".
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A : Press-fit
C : Measuring point
Standard and limit : Refer to EM-143, "CylinderBlock".
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CYLINDER BLOCK
EM-121
< DISASSEMBLY AND ASSEMBLY >
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 Check with a connecting rod aligner.
 If it exceeds the limit, replace connecting rod assembly.
CONNECTING ROD BIG END DIAMETER
 Install connecting rod bearing cap without installing connecting rod
bearing, and tightening connecting rod bolts to the specified
torque. Refer to EM-110, "
Disassembly and Assembly" for the
tightening procedure.
 Measure the inner diameter of connecting rod big end with an
inside micrometer.
 If out of the standard, replace connecting rod assembly.
CONNECTING ROD BUSHING OIL CLEARANCE
Connecting Rod Bushing Inner Diameter
Measure the inner diameter of connecting rod bushing with an inside
micrometer (A).
Piston Pin Outer Diameter
A: Bend
B: Torsion
C : Feeler gauge
Bend limit
: Refer to EM-143, "CylinderBlock".
Torsion limit
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1 : Connecting rod
Standard : Refer to EM-143, "CylinderBlock".
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Standard : Refer to EM-143, "CylinderBlock".
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EM-122
< DISASSEMBLY AND ASSEMBLY >
CYLINDER BLOCK
Measure the outer diameter of piston pin with a micrometer (A).
Connecting Rod Bushing Oil Clearance
(Connecting rod bushing oil clearance) = (Connecting rod bushing inner diameter) – (Piston pin outer diame-
ter)
 If the calculated value exceeds the limit, replace connecting rod assembly and/or piston and piston pin
assembly.
 If replacing piston and piston pin assembly, refer to EM-129, "
Description".
 If replacing connecting rod assembly, refer to EM-130,
"ConnectingRodBearing" to select the connecting rod bearing.
Factory installed parts grading:
 Service parts apply only to grade “0”.
- VQ25DE
- VQ35DEStandard : Refer to EM-143, "
CylinderBlock".
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Standard and limit : Refer to EM-143, "CylinderBlock".
A: Sample codes
B : Bearing stopper groove
C : Small-end diameter grade
D : Standard stamp
E : Weight grade
F : Cylinder No.
G : Management code
H : Front mark
I : Management code
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A : Piston grade number
B : Front mark
C : Piston pin grade number
D : Identification code
JPBIA2198ZZ
A : Piston grade number
B : Front mark
C : Piston pin grade number
D : Identification code
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CYLINDER BLOCK
EM-123
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Unit: mm (in)
*: After installing in connecting rod
CYLINDER BLOCK DISTORTION
 Using a scraper, remove gasket on the cylinder block surface, and also remove engine oil, scale, carbon, or
other contamination.
CAUTION:
Be careful not to allow gasket flakes to enter engine oil or engine coolant passages.
 Measure the distortion on the cylinder block upper face at some
different points in six directions (C), (D), (E), (F), (G) and (H) with a
straightedge (A) and a feeler gauge (B).
 If it exceeds the limit, replace cylinder block.
MAIN BEARING HOUSING INNER DIAMETER
 Install main bearing caps (2) and main bearing beam without
installing main bearings, and tighten main bearing cap bolts to the
specified torque. Refer to EM-110, "
Disassembly and Assembly"
for the tightening procedure.
 Measure the inner diameter of main bearing housing with a bore
gauge.
 If out of the standard, replace cylinder block (1) and main bearing
caps as assembly.
NOTE:
Cylinder block cannot be replaced as a single part, because it is
machined together with main bearing caps.
PISTON TO CYLINDER BORE CLEARANCE
Cylinder Bore inner Diameter
 Using a bore gauge, measure cylinder bore for wear, out-of-round
and taper at six different points on each cylinder. [(A) and (B) direc-
tions at (C), (D) and (E)] is in longitudinal direction of engine.
Grade 0 1
Connecting rod bushing inner diameter *22.000 - 22.006
(0.8661 - 0.8664)22.006 - 22.012
(0.8664 - 0.8666)
Piston pin hole diameter21.993 - 21.999
(0.8659 - 0.8661)21.999 - 22. 005
(0.8661 - 0.8663)
Piston pin outer diameter21.989 - 21.995
(0.8657 - 0.8659)21.995 - 22.001
(0.8659 - 0.8662)
Limit : Refer to EM-143, "CylinderBlock".
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Standard : Refer to EM-143, "CylinderBlock".
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f : 10 mm (0.39 in)
g : 60 mm (2.36 in)
h : 120 mm (4.72 in)
Standard and limit : Refer to EM-143, "
CylinderBlock".
JPBIA0226ZZ

EM-124
< DISASSEMBLY AND ASSEMBLY >
CYLINDER BLOCK
 If the measured value exceeds the limit, or if there are scratches
and/or seizure on the cylinder inner wall, hone or rebore the inner
wall.
 Oversize piston is provided. When using oversize piston, rebore
cylinder so that the clearance of the piston to cylinder bore satis-
fies the standard.
CAUTION:
When using oversize piston, use oversize pistons for all cylin-
ders with oversize piston rings.
Piston Skirt Diameter
Measure the outer diameter of piston skirt with a micrometer (A).
Piston-to-Cylinder Bore Clearance
Calculate by piston skirt diameter and cylinder bore inner diameter [direction (B), position (D)].
(Clearance) = (Cylinder bore inner diameter) – (Piston skirt diameter).
 If the calculated value exceeds the limit, replace piston and piston pin assembly. Refer to EM-129, "
Piston".
Reboring Cylinder Bore
1. Cylinder bore size is determined by adding piston to cylinder bore clearance to piston skirt diameter.
2. Install main bearing caps and main bearing beam, and tighten to the specified torque. Otherwise, cylinder
bores may be distorted in final assembly.
3. Cut cylinder bores.
NOTE:
 When any cylinder needs boring, all other cylinders must also be bored.
 Do not cut too much out of cylinder bore at a time. Cut only 0.05 mm (0.0020 in) or so in diameter at a
time.
4. Hone cylinders to obtain the specified piston to cylinder bore clearance.
5. Measure finished cylinder bore for the out-of-round and taper.
NOTE:
Measurement should be done after cylinder bore cools down.
CRANKSHAFT MAIN JOURNAL DIAMETER
 Measure the outer diameter of crankshaft main journals with a micrometer. Oversize (O/S) : 0.2 mm (0.008 in)
SEM843E
Measure point
: Refer to EM-143, "CylinderBlock".
Standard
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Standard and limit : Refer to EM-143, "CylinderBlock".
Rebored size calculation: D = A + B – C
where,
A: Piston skirt diameter as measured
B: Piston to cylinder bore clearance (standard value)
C: Honing allowance 0.02 mm (0.0008 in)
D: Bored diameter
Standard : Refer to EM-143, "
CylinderBlock".

CYLINDER BLOCK
EM-125
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 If out of the standard, measure the main bearing oil clearance. Then use undersize bearing. Refer to EM-
132, "MainBearing".
CRANKSHAFT PIN JOURNAL DIAMETER
 Measure the outer diameter of crankshaft pin journal with a
micrometer (A).
 If out of the standard, measure the connecting rod bearing oil
clearance. Then use undersize bearing. Refer to EM-130,
"ConnectingRodBearing".
CRANKSHAFT OUT-OF-ROUND AND TAPER
 Measure the dimensions at four different points as shown in the
figure on each main journal and pin journal with a micrometer.
 Out-of-round is indicated by the difference in the dimensions
between (d) and (c) at (a) and (b).
 Taper is indicated by the difference in the dimensions between.
 If the measured value exceeds the limit, correct or replace crank-
shaft.
 If corrected, measure the bearing oil clearance of the corrected
main journal and/or pin journal. Then select the main bearing and/
or connecting rod bearing. Refer to EM-132, "
MainBearing" and/
or EM-130, "
ConnectingRodBearing".
CRANKSHAFT RUNOUT
 Place V-block on precise flat table, and support the journals on the both end of crankshaft.
 Place a dial indicator straight up on the No. 3 journal.
 While rotating crankshaft, read the movement of the pointer on a
dial indicator. (Total indicator reading)
 If it exceeds the limit, replace crankshaft.
CONNECTING ROD BEARING OIL CLEARANCE
Method by Calculation
 Install connecting rod bearings (1) to connecting rod (2) and con-
necting rod cap, and tighten connecting rod bolts to the specified
torque. Refer to EM-110, "
Disassembly and Assembly" for the
tightening procedure.
 Measure the inner diameter of connecting rod bearing with an
inside micrometer.
(Oil clearance) = (Connecting rod bearing inner diameter) – (Crank-
shaft pin journal diameter)Standard : Refer to EM-143, "
CylinderBlock".
JPBIA0228ZZ
Limit : Refer to EM-143, "CylinderBlock".
JPBIA0229ZZ
Standard and limit : Refer to EM-143, "CylinderBlock".
SEM346D
Standard and limit : Refer to EM-147,
"ConnectingRodBearing".JPBIA0230ZZ