Yamaha RX10K, Supplementary Service Manual

Page: 320 / 523

5-53
CRANKCASE
ENG
NOTE:
13. Select:
S
Crankshaft journal bearings (J1
X
J5)
S
The numbers A stamped into the crankshaft
web and the numbers
B
stamped into the low-
er crankcase are used to determine the re-
placement crankshaft journal bearing sizes.
S
“J1
X
J5” refer to the bearings shown in the
crankshaft illustration.
S
If “J1
X
J5” are the same, use the same size
for all of the bearings.
Selection of bearings:
For example, if the crankcase “J
1
” and crank-
shaft web “J
1
” numbers are “6” and “2” respec-
tively, then the bearing size for “J
1
” is:
Bearing size for J
1
:
J1 (crankcase) – J
1
(crankshaft web)
– 2 = 6 – 2 – 2 = 2 (black)
CRANKSHAFT JOURNAL BEARING
COLOR CODE
–1 Violet
0 White
1 Blue
2 Black
3 Brown
14. Measure:
S
Crankshaft-pin-to-big-end-bearing clear-
ance
Out of specification
!
Replace the big end
bearings.
Crankshaft-pin-to-big-end-
bearing clearance:
0.016
X
0.040 mm
(0.0006
X
0.0016 in)