Infiniti F50. Manual — part 549
CYLINDER BLOCK
EM-83
C
D
E
F
G
H
I
J
K
L
M
A
EM
HOW TO SELECT CONNECTING ROD BEARING
When New Connecting Rod and Crankshaft are Used:
Compare the pin diameter grade of the crankshaft front surface with
the values of the selection table of connecting rod bearing.
NOTE:
There is no grading for connecting rod big end.
When Crankshaft and Connecting Rod are Reused:
1.
Measure the pin outer diameter of the crankshaft.
2.
Compare the measurement with the values of the selection table of connecting rod bearing.
Selection Table of Connecting Rod Bearing
Unit: mm (in)
NOTE:
(At shipment from the plant) For an engine, all the connecting rod
assemblies are in the same weight class. For service parts, no
weight grades can be selected.
Undersize Bearings Usage Guide
●
When the specified oil clearance is not obtained with standard size connecting rod bearings, use under-
size (US) bearings.
●
When using undersize bearings, measure the bearing inner diameters with bearings installed, and grind
the crankshaft pin so that the oil clearance satisfies the standard.
PBIC0110E
Connecting rod big end inner diameter
55.000 - 55.013 (2.1654 - 2.1659)
Crankshaft pin outer diameter
Grade (Mark)
—(No grade)
51.968 - 51.974
(2.0460 - 2.0462)
0
Bearing grade No. 0
Bearing thickness range: 1.500 - 1.503 (0.00591 - 0.0592)
Color: No color
51.962 - 51.968
(2.0457 - 2.0460)
1
Bearing grade No.1
Bearing thickness range: 1.503 - 1.506 (0.0592 - 0.0593)
Color: Brown
51.956 - 51.962
(2.0455 - 2.0457)
2
Bearing grade No.2
Bearing thickness range: 1.506 - 1.509 (0.0593 - 0.0594)
Color: Green
PBIC0103E
EM-84
CYLINDER BLOCK
Bearing undersize table
Unit: mm (in)
CAUTION:
In grinding the crankshaft pin to use undersize bearings, do not
damage the fillet R (All crankshaft pins).
HOW TO SELECT MAIN BEARING
When New Cylinder Block and Crankshaft are Used:
1.
Apply main bearing housing grade on upper rear side between
cylinder block banks to row in main bearing selection table.
2.
Apply journal diameter grade on crankshaft front to column in
main bearing selection table.
3.
Find sign at crossing of row and column 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
lists 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:
●
Grade list 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 inner diameter of cylinder block main bearing housing and outer diameter of crankshaft journal.
2.
Apply measurement in above step 1 to main bearing selection table.
3.
Follow step 3 and later in “When new cylinder block and crankshaft are used”.
Undersize
Thickness
US 0.25 (0.0098)
1.626 - 1.634 (0.0640 - 0.0643)
PBIC0111E
PBIC0108E
PBIC0110E
CYLINDER BLOCK
EM-85
C
D
E
F
G
H
I
J
K
L
M
A
EM
Main Bearings Selection Table (No.1 and No.5 journal)
PBIC0112E
EM-86
CYLINDER BLOCK
Main Bearings Selection Table (No.2, 3 and 4 journal)
Main Bearings Grade Table (All Journals)
Unit: mm (in)
PBIC0113E
Grade number
Thickness
Identification color
(UPR/LWR)
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
Нет комментариевНе стесняйтесь поделиться с нами вашим ценным мнением.
Текст