Infiniti EX35. Manual - part 734

HOW TO SELECT PISTON AND BEARING

EM-135

< DISASSEMBLY AND ASSEMBLY >

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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

1.

Measure the connecting rod big end diameter. Refer to 

EM-144, "Cylinder Block"

.

2.

Check that the connecting rod big end diameter is within the standard value.

3.

Measure the crankshaft pin journal diameter. Refer to 

EM-144, "Cylinder Block"

.

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

CONNECTING ROD BEARING GRADE TABLE

UNDERSIZE BEARING USAGE GUIDE

J

: Pin diameter grade No. 6

K

: Identification

PBIC5435E

Connecting rod bearing grade table

: Refer to 

EM-149, "Connecting Rod Bearing"

.

E M - 1 3 6

< DISASSEMBLY AND ASSEMBLY >

HOW TO SELECT PISTON AND BEARING

• 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:

In grinding crankshaft pin to use undersize bearings, keep the
fillet R (A) [1.5 - 1.7 mm (0.059 - 0.067 in)].

Main Bearing

INFOID:0000000003139153

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 SELEC-
TION TABLE”.

JPBIA0216ZZ

Bearing undersize table

: Refer to 

EM-149, "Connecting Rod Bearing"

.

A

: Bearing housing grade No. 1

B

: Bearing housing grade No. 2

C

: Bearing housing grade No. 3

D

: Bearing housing grade No. 4

E

: Cylinder bore grade No. 1

F

: Cylinder bore grade No. 2

G

: Cylinder bore grade No. 3

H

: Cylinder bore grade No. 4

I

: Cylinder bore grade No. 5

J

: Cylinder bore grade No. 6

K

: Identification code

: Engine front

JPBIA0268ZZ

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 code

JPBIA0269ZZ

HOW TO SELECT PISTON AND BEARING

EM-137

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4.

Apply sign at crossing in above step 3 to “MAIN BEARING GRADE TABLE”.
NOTE:
• “MAIN BEARING GRADE TABLE” applies to all journals.
• Service parts is available as a set of both upper and lower.

WHEN CYLINDER BLOCK AND CRANKSHAFT ARE REUSED

1.

Measure cylinder block main bearing housing inner diameter and crankshaft main journal diameter. Refer
to 

EM-136, "Main Bearing"

 and 

EM-144, "Cylinder Block"

.

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.

Follow step 3 and later in “When New Cylinder Block and Crankshaft are Used”.

MAIN BEARING SELECTION TABLE

MAIN BEARING GRADE TABLE (ALL JOURNALS)

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.

JPBIA0264ZZ

Main bearing grade table (All journals)

: Refer to 

EM-148, "Main Bearing"

.

EM-138

< DISASSEMBLY AND ASSEMBLY >

HOW TO SELECT PISTON AND BEARING

CAUTION:

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

JPBIA0216ZZ

Bearing undersize table

: Refer to 

EM-148, "Main Bearing"

.