Nissan Qashqai J11. Manual - part 75

CYLINDER BLOCK

EM-239

< UNIT DISASSEMBLY AND ASSEMBLY >

[MR20DD]

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• Measure the outer diameter (d) at position as shown in the figure.
• If reduction appears in a position other than (d), regard it as (d).

• When (d) exceeds the limit (when it becomes thinner), replace

connecting rod cap bolt with a new one.

CLOGGED OR DAMAGED OIL FILTER (FOR VALVE TIMING CONTROL)

• Check that there is no foreign material on the oil filter and check it

for clogging.

- Clean it if necessary.
• Check the oil filter for damage.
- Replace it if necessary.

Limit: 7.75 mm (0.3051 in) 

PBIC4016E

PBIC3273J

EM-240

< UNIT DISASSEMBLY AND ASSEMBLY >

[MR20DD]

HOW TO SELECT PISTON AND BEARING

HOW TO SELECT PISTON AND BEARING

Description

INFOID:0000000010715518

• 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:0000000010715519

WHEN NEW CYLINDER BLOCK IS USED

• Check the cylinder bore grade on rear left side of cylinder block 

,

and select piston of the same grade.

• If there is a correction stamp mark on the cylinder block, use it as a

correct reference.

WHEN CYLINDER BLOCK IS REUSED

1.

Measure the cylinder bore inner diameter. Refer to 

EM-253, "Cylinder Block"

.

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 an assembly.)

Piston grade (piston outer diam-
eter)

Piston grade = cylinder bore 
grade (inner diameter of bore)

: Correction stamp

: Standard stamp

: Cylinder No. 1 bore grade

: Cylinder No. 2 bore grade

: Cylinder No. 3 bore grade

: Cylinder No. 4 bore grade

: No. 1 main bearing housing grade

: No. 2 main bearing housing grade

: No. 3 main bearing housing grade

: No. 4 main bearing housing grade

: No. 5 main bearing housing grade

: Engine front

PBIC3264J

HOW TO SELECT PISTON AND BEARING

EM-241

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[MR20DD]

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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 an assembly. 

Connecting Rod Bearing

INFOID:0000000010715520

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 CONNECTING ROD AND CRANKSHAFT ARE REUSED

: Identification code

: Piston grade number

: Front mark

: Sub grade number

JPBIA4439ZZ

Grade number (Mark)

1

2 [or no mark (piston only)]

Cylinder bore Inner diameter

84.000 - 84.010 (3.3071 - 3.3075)

84.010 - 84.020 (3.3075 - 3.3079)

Piston skirt diameter

83.970 - 83.980 (3.3059 - 3.3063)

83.980 - 83.990 (3.3063 - 3.3067)

: Oil hole

: Management code

: Cylinder number

: Big end diameter grade

: Front mark

JPBIA4442ZZ

: No. 1 pin journal diameter grade

: No. 2 pin journal diameter grade

: No. 3 pin journal diameter grade

: No. 4 pin journal diameter grade

: No. 1 main journal diameter grade

: No. 2 main journal diameter grade

: No. 3 main journal diameter grade

: No. 4 main journal diameter grade

: No. 5 main journal diameter grade

PBIC3261J

EM-242

< UNIT DISASSEMBLY AND ASSEMBLY >

[MR20DD]

HOW TO SELECT PISTON AND BEARING

1.

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

EM-231, "Inspection"

.

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.

CONNECTING ROD BEARING SELECTION TABLE

CONNECTING ROD BEARING GRADE TABLE

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:

PBIC4077E

Connecting rod bearing grade table

: Refer to 

EM-256, "Connecting Rod Bearing"

.