Nissan Teana J32. Manual — part 501
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< DISASSEMBLY AND ASSEMBLY >
CYLINDER BLOCK
• Measure the outer diameter (d) at position shown in the figure.
• If the reduction appears in a position other than (d), regard it as (d).
• When (d) exceeds the limit (when it becomes thinner), replace
connecting rod bolt with new one.
DRIVE PLATE
• Check drive plate and signal plate for deformation or damage.
CAUTION:
• Never disassemble drive plate.
• Never 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 becom-
ing magnetized.
• If anything is found, replace drive plate.
OIL JET (VQ35DE)
• Check nozzle for deformation and damage.
• Blow compressed air from nozzle, and check for clogs.
• If it is not satisfied, clean or replace oil jet.
OIL JET RELIEF VALVE (VQ35DE)
• Using a clean plastic stick, press check valve in oil jet relief valve.
Check that valve moves smoothly with proper reaction force.
• If it is not satisfied, replace oil jet relief valve.
Standard
: 7.90 - 8.00 mm (0.3110 - 0.3150 in)
Limit
: 7.75 mm (0.3051 in)
PBIC0912E
JPBIA0192ZZ
EMU0468D
HOW TO SELECT PISTON AND BEARING
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HOW TO SELECT PISTON AND BEARING
Description
INFOID:0000000003802296
*: For the service parts, the grade for fitting cannot be selected between piston pin and connecting rod. (Only “0” grade is available.) The
information at the shipment from the plant is described as a reference.
• The identification grade stamped on each part is the grade for the dimension measured in new condition.
This grade cannot apply to reused parts.
• For reused or repaired parts, measure the dimension accurately. Determine the grade by comparing the
measurement with the values of each selection table.
• For details of the measurement method of each part, the reuse standards and the selection method of the
selective fitting parts, refer to the text.
Piston
INFOID:0000000003802297
WHEN NEW CYLINDER BLOCK IS USED
Check the cylinder bore grade (“1”, “2” or “3”) on rear side of cylinder
block, and select piston of the same grade.
NOTE:
Piston is available with piston pin as a set for the service part. (Only
“0” grade piston pin is available.)
WHEN NEW CYLINDER BLOCK IS REUSED
1.
Measure the cylinder bore inner diameter. Refer to
.
2.
Determine the bore grade by comparing the measurement with the values under the cylinder bore inner
diameter of the “PISTON SELECTION TABLE”.
Selection points
Selection parts
Selection items
Selection methods
Between cylinder block and
crankshaft
Main bearing
Main bearing grade
(bearing thickness)
Determined by match of cylin-
der block bearing housing
grade (inner diameter of hous-
ing) and crankshaft journal
grade (outer diameter of jour-
nal)
Between crankshaft and con-
necting rod
Connecting rod bearing
Connecting rod bearing grade
(bearing thickness)
Combining service grades for
connecting rod big end diame-
ter and crankshaft pin outer di-
ameter determine connecting
rod bearing selection.
Between cylinder block and pis-
ton
Piston and piston pin assembly
(Piston is available together
with piston pin as assembly.)
Piston grade
(piston skirt diameter)
Piston grade = cylinder bore
grade (inner diameter of bore)
Between piston and connecting
rod*
—
—
—
SEM756G
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< DISASSEMBLY AND ASSEMBLY >
HOW TO SELECT PISTON AND BEARING
• VQ25DE
• VQ35DE
3.
Select piston of the same grade.
PISTON SELECTION TABLE
VQ25DE
Unit: mm (in)
VQ35DE
Unit: mm (in)
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 pis-
ton pin grades can be selected. (Only “0” grade is available.)
• No second grade mark is available on piston.
Connecting Rod Bearing
INFOID:0000000003802298
WHEN NEW CONNECTING ROD AND CRANKSHAFT ARE USED
A
: Piston grade number
B
: Front mark
C
: Piston pin grade
D
: Identification code
JPBIA2198ZZ
A
: Piston grade number
B
: Front mark
C
: Piston pin grade
D
: Identification code
JPBIA2199ZZ
Grade
1
2
3
Cylinder bore inner diameter
85.000 - 85.010
(3.3465 - 3.3468)
85.010 - 85.020
(3.3468 - 3.3472)
85.020 - 85.030
(3.3472 - 3.3476)
Piston skirt diameter
84.980 - 84.990
(3.3457 - 3.3461)
84.990 - 85.000
(3.3461 - 3.3465)
85.000 - 85.010
(3.3465 - 3.3468)
Grade
1
2
3
Cylinder bore inner diameter
95.500 - 95.510
(3.7598 - 3.7602)
95.510 - 95.520
(3.7602 - 3.7606)
95.520 - 95.530
(3.7606 - 3.7610)
Piston skirt diameter
95.480 - 95.490
(3.7590 - 3.7594)
95.490 - 95.500
(3.7594 - 3.7598)
95.500 - 95.510
(3.7598 - 3.7602)
HOW TO SELECT PISTON AND BEARING
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• Check pin diameter grade (“0”, “1” or “2”) on front of crankshaft,
and select connecting rod bearing of the same grade.
NOTE:
There is no grading for connecting rod big end diameter.
WHEN CONNECTING ROD AND CRANKSHAFT ARE REUSED
1.
Measure the connecting rod big end diameter. Refer to
.
2.
Check that the connecting rod big end diameter is within the standard value.
3.
Measure the crankshaft pin journal diameter. Refer to
.
4.
Determine the grade of crankshaft pin diameter grade by corresponding to the measured dimension in
“Crankshaft pin journal diameter” column of “CONNECTING ROD BEARING SELECTION TABLE”.
5.
Select connecting rod bearing of the same grade.
CONNECTING ROD BEARING SELECTION TABLE
VQ25DE
Unit: mm (in)
Unit: mm (in)
VQ35DE
Unit: mm (in)
Unit: mm (in)
CONNECTING ROD BEARING GRADE TABLE
UNDERSIZE BEARING USAGE GUIDE
• When the specified connecting rod bearing oil clearance is not obtained with standard size connecting rod
bearings, use undersize (US) bearings.
A
: Journal diameter grade No. 1
B
: Journal diameter grade No. 2
C
: Journal diameter grade No. 3
D
: Journal diameter grade No. 4
E
: Pin diameter grade No. 1
F
: Pin diameter grade No. 2
G
: Pin diameter grade No. 3
H
: Pin diameter grade No. 4
I
: Pin diameter grade No. 5
J
: Pin diameter grade No. 6
K
: Identification
JPBIA0269ZZ
Connecting rod big end diameter
48.000 - 48.013 (1.8898 - 1.8903)
Crankshaft
Connecting rod bearing
Crankshaft pin journal diameter
Grade (Mark)
Dimension (Bearing thickness range)
Bearing grade No.
Color
44.968 - 44.974 (1.7704 - 1.7706)
0
1.500 - 1.503 (0.0591 - 0.0592)
STD 0
Black
44.962 - 44.968 (1.7702 - 1.7704)
1
1.503 - 1.506 (0.0592 - 0.0593)
STD 1
Brown
44.956 - 44.962 (1.7699 - 1.7702)
2
1.506 - 1.509 (0.0593 - 0.0594)
STD 2
Green
Connecting rod big end diameter
55.000 - 55.013 (2.1654 - 2.1659)
Crankshaft
Connecting rod bearing
Crankshaft pin journal diameter
Grade (Mark)
Dimension (Bearing thickness range)
Bearing grade No.
Color
51.968 - 51.974 (2.0460 - 2.0462)
0
1.500 - 1.503 (0.0591 - 0.0592)
STD 0
Black
51.962 - 51.968 (2.0457 - 2.0460)
1
1.503 - 1.506 (0.0592 - 0.0593)
STD 1
Brown
51.956 - 51.962 (2.0455 - 2.0457)
2
1.506 - 1.509 (0.0593 - 0.0594)
STD 2
Green
Connecting rod bearing grade table
: Refer to
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