B2410 • B2710 •
B291
0 WSM, 12271
(4) Crankshaft
11900P10240
o
c
00000F10350
1 ENGINE
Crankshaft Side Clearance
1.
Set a dial indicator with its tip on the end of the crankshaft.
2.
Measure the side clearance by moving the crankshaft to the front
and rear.
3.
If
the measurement exceeds the allowable limit, replace the
thrust bearings.
4.
If
the same size bearing
is
useless because of the crankshaft
journal wear, replace it with an oversize one referring to the table
and figure.
Factory spec.
0.15toO.31 mm
Crankshaft side
0.0059 to 0.0122 in.
clearance
0.50
mm
Allowable limit
0.0197 in.
(Reference)
• Oversize thrust bearing
Oversize
Bearing
Code Number
Marking
0.2mm
Thrust bearing 1 02 15521-23951
02008
0.008 in.
Thrust bearing 2
02
19202-23971
02008
0.4 mm
Thrust bearing 1
04
15521-23961
04008
0.016 in.
Thrust bearing 2
04
19202-23981
04008
• Oversize dimensions of crankshaft journal
~
0.2mm
O.4mm
size
0.008 in. 0.016 in.
Dimension
A
28.20 to 28.25 mm
28.40 to 28.45
mm
1.1102 to 1.1122 in.
1.1181 to 1.1201 in.
S
51.5 to 51.7 mm 51.6 to 51.8
mm
2.028 to 2.035 in. 2.031 to 2.039 in.
C
2.3 to 2.7 mm radius 2.3 to 2.7 mm radius
0.091 to 0.106 in. radius 0.091 to 0.106 in. radius
The crankshaft journal must be fine-finished to higher than
~v~~).
12270810460
Crankshaft Alignment
1.
Support the crankshaft with V blocks on the surface plate at both
end journals.
2.
Set a dial indicator with its tip on the intermediate journal.
3.
Measure the crankshaft alignment.
4.
If
the measurement exceeds the allowable limit, replace the
crankshaft.
00000F10330
Crankshaft alignment
1-S43
Allowable limit
0.02
mm
0.0008 in.
12460810630
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