Infiniti FX35 / FX45. Manual - part 655

 

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Infiniti FX35 / FX45. Manual - part 655

 

 

CYLINDER BLOCK

EM-137

< SERVICE INFORMATION >

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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 Selection
Table”.

When Cylinder Block and Crankshaft are Reused

1.

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

EM-138, "Inspection After Disassembly"

 and 

EM-138, "Inspection After Disassembly"

.

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.

Select main bearing grade at the point where selected row and column meet in following selection table.

Main Bearing Selection Table

SEM452G

PBIC1981E

EM-138

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CYLINDER BLOCK

Main Bearing Grade Table (All Journals)

Unit: mm (in)

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 - 1.7 mm (0.059 - 0.067 in)]. 

Bearing undersize table

Unit: mm (in)

Inspection After Disassembly

INFOID:0000000001325749

CRANKSHAFT END PLAY

Grade number

Thickness

Width

Identification color

Remarks

0

2.000 - 2.003 (0.0787 - 0.0789)

19.9 - 20.1

 (0.783 - 0.791)

Black

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

1

2.003 - 2.006 (0.0789 - 0.0790)

Brown

2

2.006 - 2.009 (0.0790 - 0.0791)

Green

3

2.009 - 2.012 (0.0791 - 0.0792)

Yellow

4

2.012 - 2.015 (0.0792 - 0.0793)

Blue

5

2.015 - 2.018 (0.0793 - 0.0794)

Pink

6

2.018 - 2.021 (0.0794 - 0.0796)

Purple

7

2.021 - 2.024 (0.0796 - 0.0797)

White

01

UPR

2.003 - 2.006 (0.0789 - 0.0790)

Brown

Grade and color are 
different for upper and 
lower bearings.

LWR

2.000 - 2.003 (0.0787 - 0.0789)

Black

12

UPR

2.006 - 2.009 (0.0790 - 0.0791)

Green

LWR

2.003 - 2.006 (0.0789 - 0.0790)

Brown

23

UPR

2.009 - 2.012 (0.0791 - 0.0792)

Yellow

LWR

2.006 - 2.009 (0.0790 - 0.0791)

Green

34

UPR

2.012 - 2.015 (0.0792 - 0.0793)

Blue

LWR

2.009 - 2.012 (0.0791 - 0.0792)

Yellow

45

UPR

2.015 - 2.018 (0.0793 - 0.0794)

Pink

LWR

2.012 - 2.015 (0.0792 - 0.0793)

Blue

56

UPR

2.018 - 2.021 (0.0794 - 0.0796)

Purple

LWR

2.015 - 2.018 (0.0793 - 0.0794)

Pink

67

UPR

2.021 - 2.024 (0.0796 - 0.0797)

White

LWR

2.018 - 2.021 (0.0794 - 0.0796)

Purple

PBIC1908E

Size

Thickness

US 0.25 (0.0098)

2.132 - 2.140 (0.0839 - 0.0843)

CYLINDER BLOCK

EM-139

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• Measure the clearance between thrust bearings and crankshaft

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

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

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

CONNECTING ROD SIDE CLEARANCE

• Measure the side clearance between connecting rod and crank-

shaft arm with a feeler gauge.

• If the measured value exceeds the limit, replace connecting rod,

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

PISTON TO PISTON PIN OIL CLEARANCE

Piston Pin Hole Diameter

Measure the inner diameter of piston pin hole with an inside
micrometer.

Piston Pin Outer Diameter

Measure the outer diameter of piston pin with a micrometer.

Piston to Piston Pin Oil Clearance

(Piston to piston pin oil clearance) = (Piston pin hole diameter) – (Piston pin outer diameter)

• If the calculated value is out of the standard, replace piston and piston pin assembly.
• When replacing piston and piston pin assembly, refer to 

EM-134, "How to Select Piston and Bearing"

.

NOTE:
• Piston is available together with piston pin as assembly.

Standard

: 0.10 - 0.25 mm (0.0039 - 0.0098 in)

Limit

: 0.30 mm (0.0118 in)

EMQ0196D

Standard

: 0.20 - 0.35 mm (0.008 - 0.014 in)

Limit

: 0.40 mm (0.016 in)

PBIC0815E

Standard

: 21.993 - 22.005 mm (0.8659 - 0.8663 in)

PBIC0116E

Standard

: 21.989 - 22.001 mm (0.8657 - 0.8662 in)

PBIC0117E

Standard

: 0.002 - 0.006 mm (0.0001 - 0.0002 in)

EM-140

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CYLINDER BLOCK

• Piston pin (piston pin hole) grade is provided only for the parts installed at the plant. For service parts, no

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

PISTON RING SIDE CLEARANCE

• Measure the side clearance of piston ring and piston ring groove

with a feeler gauge.

• If the measured value exceeds the limit, replace piston ring, and measure again. If it still exceeds the limit,

replace piston also.

PISTON RING END GAP

• Make sure that the cylinder bore inner diameter is within the speci-

fication. Refer to "Cylinder Bore inner Diameter ".

• Lubricate with new engine oil to piston and piston ring, and then

insert piston ring until middle of cylinder with piston, and measure
the piston ring end gap with a feeler gauge.

• If the measured value exceeds the limit, replace piston ring, and measure again. If it still exceeds the limit,

re-bore cylinder and use oversize piston and piston rings.

CONNECTING ROD BEND AND TORSION

Standard:

Top ring

: 0.045 - 0.080 mm (0.002 - 0.003 in)

2nd ring

: 0.030 - 0.070 mm (0.001 - 0.003 in)

Oil ring

: 0.065 - 0.135 mm (0.003 - 0.005 in)

Limit:

     Top ring

: 0.11 mm (0.004 in)

     2nd ring

: 0.10 mm (0.004 in)

SEM024AA

Standard:

Top ring

: 0.23 - 0.33 mm (0.009 - 0.013 in)

2nd ring

: 0.33 - 0.48 mm (0.013 - 0.019 in)

Oil ring

: 0.20 - 0.50 mm (0.008 - 0.020 in)

Limit:

     Top ring

: 0.54 mm (0.021 in)

     2nd ring

: 0.80 mm (0.031 in)

Oil ring

: 0.95 mm (0.037 in)

PBIC0118E

 

 

 

 

 

 

 

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