Nissan X-Trail 32. Manual - part 1093

HOW TO SELECT PISTON AND BEARING

EM-269

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Main Bearing

INFOID:0000000010783828

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 three main bearing selection tables. 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-256, "Inspection"

.

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”.

CAUTION:

There are three main bearing selection tables. 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.

: Corrected stamping position

: Basic stamping position

: No.1 - 4 from left

: Cylinder bore grade

: No.1 - 5 from left

: Main bearing housing grade

: Engine front

JSBIA2542ZZ

: key

: Main journal diameter grade (No.1 - 5 from left)

: Pin journal diameter grade (No.1 - 4 from left)

JSBIA2543ZZ

EM-270

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HOW TO SELECT PISTON AND BEARING

MAIN BEARING SELECTION TABLE (No. 1 and 5 journals) 

PBIC2201E

HOW TO SELECT PISTON AND BEARING

EM-271

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MAIN BEARING SELECTION TABLE (No. 2 and 4 journals)

PBIC2202E

EM-272

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HOW TO SELECT PISTON AND BEARING

MAIN BEARING SELECTION TABLE (No. 3 journals) 

MAIN BEARING GRADE TABLE (ALL JOURNALS)

USE UNDERSIZE BEARING USAGE GUIDE

• When the specified main bearing oil clearance is not obtained with standard size main bearings, use under-

size (US) bearing. 

• When using undersize (US) bearing, measure the main bearing inner diameter with bearing installed, and

grind main journal so that the main bearing oil clearance satisfies the standard.

CAUTION:

In grinding crankshaft main journal to use undersize bearings,
keep fillet R [1.5 - 1.7 mm (0.059 - 0.067 in)] 

. 

JSBIA3794GB

Main bearing grade table (All journals)

: Refer to 

EM-283, "Main Bearing"

.

Bearing undersize table:

Refer to 

EM-283, "Main Bearing"

.

PBIC3263J