Nissan Frontier D40. Manual - part 592

EM-100

< DISASSEMBLY AND ASSEMBLY >

[QR25DE]

HOW TO SELECT PISTON AND BEARING

1.

Measure the cylinder bore inner diameter. Refer to 

EM-88, "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”.

3.

Select piston of the same grade.

Piston Selection Table

Unit: mm (in)

NOTE:
• There is no piston grade “1”.
• Piston is available together with piston pin as an assembly. 
• The piston pin (piston pin hole) grade is provided only for the parts installed at the plant. For service parts, no

grades can be selected. (Only grade “0” is available.)

HOW TO SELECT CONNECTING ROD BEARING

When New Connecting Rod and Crankshaft Are Used

1.

Apply connecting rod big end diameter grade stamped on con-
necting rod side face to the row in the “Connecting Rod Bearing
Selection Table”.

2.

Apply crankshaft pin journal diameter grade stamped on crank-
shaft front side to the column in the “Connecting Rod Bearing
Selection Table”.

3.

Read the symbol at the cross point of selected row and column in the “Connecting Rod Bearing Selection
Table”.

4.

Apply the symbol obtained to the “Connecting Rod Bearing Grade Table” to select connecting rod bearing.

When Crankshaft and Connecting Rod Are Reused

1.

Measure the dimensions of the connecting rod big end diameter and crankshaft pin journal diameter indi-
vidually. Refer to 

EM-88, "Inspection After Disassembly"

 and 

EM-88, "Inspection After Disassembly"

.

2.

Apply the measured dimension to the “Connecting Rod Bearing Selection Table”.

3.

Read the symbol at the cross point of selected row and column in the “Connecting Rod Bearing Selection
Table”.

4.

Apply the symbol obtained to the “Connecting Rod Bearing Grade Table” to select connecting rod bearing.

Grade number (Mark)

2 (or no mark)

3

Cylinder bore Inner diameter

89.010 - 89.020 (3.5043 - 3.5047)

89.020 - 89.030 (3.5047 - 3.5051)

Piston skirt diameter

88.990 - 89.000 (3.5035 - 3.5039)

89.000 - 89.010 (3.5039 - 3.5043)

PBIC2196E

PBIC2198E

HOW TO SELECT PISTON AND BEARING

EM-101

< DISASSEMBLY AND ASSEMBLY >

[QR25DE]

C

D

E

F

G

H

I

J

K

L

M

A

EM

N

P

O

Connecting Rod Bearing Selection Table

Connecting Rod Bearing Grade Table

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 the crankshaft pin so that the connecting rod bearing oil clearance satisfies the standard. 

CAUTION:

WBIA0838E

Grade number

0

1

2

3

4

Thickness

1.493 - 1.496

 (0.0588 - 0.0589)

1.496 - 1.499

 (0.0589 - 0.0590)

1.499 - 1.502 

(0.0590 - 0.0591)

1.502 - 1.505

(0.0591 - 0.0593)

1.505 - 1.508 

(0.0593 - 0.0594)

Identification col-
or

Black

Brown

Green

Yellow

Blue

EM-102

< DISASSEMBLY AND ASSEMBLY >

[QR25DE]

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 main bearing
housing grade on rear-left side of cylinder block.
• If there is a corrected stamp mark on cylinder block, use it as a

correct reference.

2.

Apply main journal diameter grade stamped on crankshaft front
side to column in the “Main Bearing Selection Table”.

3.

Read the symbol at the cross point of selected row and column in the “Main Bearing Selection Table”.

CAUTION:

There are two main bearing selection tables. One is for odd-numbered journals (No. 1, 3 and 5) and
the other is for even-numbered journals (No. 2 and 4).   Make certain to use the appropriate table.
This is due to differences in the specified clearances. 

4.

Apply the symbol obtained to the “Main Bearing Grade Table” to select main bearing.
NOTE:
Service part is available as a set of both upper and lower.

When Cylinder Block and Crankshaft Are Reused

1.

Measure the dimensions of the cylinder block main bearing housing inner diameter and crankshaft main
journal diameter individually. Refer to 

EM-88, "Inspection After Disassembly"

 and 

EM-88, "Inspection After

Disassembly"

.

2.

Apply the measured dimension to the “Main Bearing Selection Table”.

3.

Read the symbol at the cross point of selected row and column in the “Main Bearing Selection Table”.

PBIC2200E

Size

Thickness

US 0.25 (0.0098)

1.624 - 1.632 (0.0639 - 0.0642)

SBIA0283E

PBIC2198E

HOW TO SELECT PISTON AND BEARING

EM-103

< DISASSEMBLY AND ASSEMBLY >

[QR25DE]

C

D

E

F

G

H

I

J

K

L

M

A

EM

N

P

O

CAUTION:

There are two main bearing selection tables. One is for odd-numbered journals (No. 1, 3 and 5) and
the other is for even-numbered journals (No. 2 and 4).   Make certain to use the appropriate table.
This is due to differences in the specified clearances. 

4.

Apply the symbol obtained to the “Main Bearing Grade Table” to select main bearing.
NOTE:
Service part is available as a set of both upper and lower.

Main Bearing Selection Table (No. 1, 3 and 5 journals)

PBIC2201E