Nissan Teana J32. Manual — part 498
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
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
Top ring (A)
: R
: —
Second ring (B)
: R 2
: 2 R
JPBIA0263ZZ
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
JPBIA0205ZZ
JPBIA0206ZZ
JPBIA0207ZZ
CYLINDER BLOCK
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< 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
.
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
.
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-
.
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
JPBIA0210ZZ
PBIC0810E
A
: Bank 1
B
: Bank 2
: Engine front
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CYLINDER BLOCK
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< DISASSEMBLY AND ASSEMBLY >
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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.
Inspection
INFOID: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
JPBIA0212ZZ
Standard and limit
: Refer to
.
EMQ0196D
Standard and limit
: Refer to
JPBIA0536ZZ
Standard
: Refer to
JPBIA0217ZZ
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