Infiniti FX35 / FX45. Manual - part 684

CYLINDER BLOCK

EM-253

< SERVICE INFORMATION >

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In grinding crankshaft pin to use undersize bearings, keep the
fillet R [1.5 mm (0.059 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 upper side between cylinder block banks.

2.

“Main Bearing Selection Table” columns correspond to main
journal diameter grade on front side of crankshaft.

3.

Select main bearing grade at the point where selected row and column meat in “Main Bearing Selection
Table”.

CAUTION:

• Initial clearance for No. 1, 5 journal and No. 2, 3, 4 journal is different. Use two different selection

table for each part. 

• No. 1, 5 journal and No. 2, 3, 4 journal have the same signs but different measures. Do not con-

fuse. 

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 the cylinder block main bearing housing inner diameter and the crankshaft main journal diame-
ter. Refer to 

EM-256, "Inspection After Disassembly"

 and 

EM-256, "Inspection After Disassembly"

.

PBIC2373E

Size

Thickness

US  0.25 (0.0098)

1.626 - 1.634 (0.0640 - 0.0643)

PBIC2371E

PBIC2374E

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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 (No. 1 and 5 Journal)

PBIC2375E

CYLINDER BLOCK

EM-255

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Main Bearing Selection Table (No. 2, 3 and 4 Journal)

Main Bearing Grade Table (All Journals)

Unit: mm (in)

PBIC2376E

Grade number

Thickness 

Identification color

Remarks

0

2.483 - 2.486 (0.0978 - 0.0979)

Black

Grade and color are the same 
for upper and lower bearings.

1

2.486 - 2.489 (0.0979 - 0.0980)

Brown

2

2.489 - 2.492 (0.0980 - 0.0981)

Green

3

2.492 - 2.495 (0.0981 - 0.0982)

Yellow

4

2.495 - 2.498 (0.0982 - 0.0983)

Blue

5

2.498 - 2.501 (0.0983 - 0.0985)

Pink

6

2.501 - 2.504 (0.0985 - 0.0986)

Purple

                     7

     2.504 - 2.507 (0.0986 - 0.0987)

                    White            

                     8

     2.507 - 2.510 (0.0987 - 0.0988)

                     Red

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CYLINDER BLOCK

Use Undersize Bearing Usage Guide

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

side (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 the fillet R [1.5 mm (0.059 in)]. 

Bearing undersize table

Unit: mm (in)

Inspection After Disassembly

INFOID:0000000001325806

CRANKSHAFT END PLAY

• Measure the clearance between thrust bearings and crankshaft

arm when crankshaft is moved fully forward or backward with dial
indicator.

• If the measured value exceeds the limit, replace thrust bearings,

and measure again. If it still exceeds the limit, replace crankshaft
also.

01

UPR

2.483 - 2.486 (0.0978 - 0.0979)

Black

Grade and color are different 
for upper and lower bearings.

LWR

2.486 - 2.489 (0.0979 - 0.0980)

Brown

12

UPR

2.486 - 2.489 (0.0979 - 0.0980)

Brown

LWR

2.489 - 2.492 (0.0980 - 0.0981)

Green

23

UPR

2.489 - 2.492 (0.0980 - 0.0981)

Green

LWR

2.492 - 2.495 (0.0981 - 0.0982)

Yellow

34

UPR

2.492 - 2.495 (0.0981 - 0.0982)

Yellow

LWR

2.495 - 2.498 (0.0982 - 0.0983)

Blue

45

UPR

2.495 - 2.498 (0.0982 - 0.0983)

Blue

LWR

2.498 - 2.501 (0.0983 - 0.0985)

Pink

56

UPR

2.498 - 2.501 (0.0983 - 0.0985)

Pink

LWR

2.501 - 2.504 (0.0985 - 0.0986)

Purple

67

UPR

2.501 - 2.504 (0.0985 - 0.0986)

Purple

LWR

2.504 - 2.507 (0.0986 - 0.0987)

White

        78

UPR

     2.504 - 2.507 (0.0986 - 0.0987)

White

LWR

     2.507 - 2.510 (0.0987 - 0.0988)

Red

PBIC2373E

Size

Thickness

US 0.25 (0.0098)

2.618 - 2.626 (0.1031 - 0.1034)

Standard

: 0.10 - 0.25 mm (0.0039 - 0.0098 in)

Limit

: 0.30 mm (0.0118 in)

PBIC2377E