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"
EM-256, "Inspection After Disassembly"
.
PBIC2373E
Size
Thickness
US 0.25 (0.0098)
1.626 - 1.634 (0.0640 - 0.0643)
PBIC2371E
PBIC2374E
EM-254
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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
< SERVICE INFORMATION >
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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
EM-256
< SERVICE INFORMATION >
[VK45DE]
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
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