Nissan Frontier. Instruction — part 763
ENGINE UNIT
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• When installing the drive plate to the crankshaft, use the
match mark (A) as shown to correctly align the crankshaft side
dowel pin to the drive plate side dowel pin hole.
• Install the drive plate and the reinforcement plate in the direc-
tion as shown.
• Tighten the drive plate bolts in a diagonal pattern in two steps. Refer to
INSTALLATION (M/T models)
1. Installation is in the reverse order of removal after the following.
• Be sure the dowel pin is installed in the crankshaft.
• When installing the flywheel (3) to the crankshaft (2), be sure
to correctly align crankshaft side dowel pin (1) to the flywheel
side dowel pin hole (A) as shown.
- Oil seal (4)
• There is a locator mark (B) on the clutch cover side of the fly-
wheel (4). Refer to this for ease of installation.
- Crankshaft dowel pin (1)
- Oil seal (2)
- Crankshaft (3)
- Flywheel (4)
- Dowel pin hole (A)
- Dowel pin locator mark (B)
• Tighten the flywheel bolts in a diagonal pattern in two steps. Refer to
.
ALBIA0522ZZ
PBIC0910E
AWBIA0539ZZ
AWBIA0540ZZ
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HOW TO SELECT PISTON AND BEARING
HOW TO SELECT PISTON AND BEARING
How to Select Piston and Bearing
INFOID:0000000009478152
DESCRIPTION
*: 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, follow the applicable procedures.
HOW TO SELECT PISTON
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 Cylinder Block is Reused
1. Measure the cylinder bore inner diameter. Refer to
EM-230, "Inspection After Disassembly"
.
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*
—
—
—
PBIC2949E
PBIC2950E
HOW TO SELECT PISTON AND BEARING
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3. Select piston of the same grade.
Piston Selection Table
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.
HOW TO SELECT CONNECTING ROD BEARING
When New Connecting Rod and Crankshaft are Used
Check pin journal 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 Crankshaft and Connecting Rod are Reused
1. Measure the connecting rod big end diameter. Refer to
EM-230, "Inspection After Disassembly"
.
2. Make sure that the connecting rod big end diameter is within the standard value.
3. Measure the crankshaft pin journal diameter. Refer to
EM-230, "Inspection After Disassembly"
.
4. Determine the grade of crankshaft pin journal 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
Unit: mm (in)
Unit: mm (in)
Undersize Bearings Usage Guide
• When the specified connecting rod bearing oil clearance is not obtained with standard size connecting rod
bearings, use undersize (US) bearings.
• When using undersize (US) bearing, measure the connecting rod bearing inner diameter with bearing
installed, and grind crankshaft pin so that the connecting rod bearing oil clearance satisfies the standard.
CAUTION:
Grade
1
2 (or no mark)
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)
PBIC2951E
Connecting rod big end diameter
57.000 - 57.013 (2.2441 - 2.2446)
Crankshaft
Connecting rod bearing
Crankshaft pin journal diameter
Grade (Mark)
Dimension (Bearing thickness range)
Bearing grade No.
Color
53.968 - 53.974 (2.1247 - 2.1250)
0
1.500 - 1.503 (0.0591 - 0.0592)
STD 0
Black
53.962 - 53.968 (2.1245 - 2.1247)
1
1.503 - 1.506 (0.0592 - 0.0593)
STD 1
Brown
53.956 - 53.962 (2.1242 - 2.1245)
2
1.506 - 1.509 (0.0593 - 0.0594)
STD 2
Green
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HOW TO SELECT PISTON AND BEARING
In grinding crankshaft pin to use undersize bearings, keep the
fillet R [1.5 - 1.7 mm (0.059 - 0.067 in)].
Bearing undersize table
Unit: mm (in)
HOW TO SELECT MAIN BEARING
When New Cylinder Block and Crankshaft are Used
1. “Main Bearing Selection Table” rows correspond to bearing
housing grade on rear left side of cylinder block.
2. “Main Bearing Selection Table” columns correspond to journal
diameter grade on front side of crankshaft.
3. Select main bearing grade at the point where selected row and column meet in “Main Bearing Selection
Table”.
When Cylinder Block and Crankshaft are Reused
1. Measure cylinder block main bearing housing inner diameter and crankshaft main journal diameter. Refer
EM-230, "Inspection After Disassembly"
EM-230, "Inspection After Disassembly"
2. Correspond the measured dimension in “Cylinder block main bearing housing inner diameter” row of
“Main Bearing Selection Table”.
3. Correspond the measured dimension in “Crankshaft main journal diameter” column of “Main Bearing
Selection Table”.
4. Select main bearing grade at the point where selected row and column meet in following selection table.
PBIC1908E
Size
Thickness
US 0.25 (0.0098)
1.626 - 1.634 (0.0640 - 0.0643)
PBIC2949E
PBIC2951E
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