Yamaha XVS6501997, Руководство по обслуживанию

Страница: 165 / 327

4-61
CRANKSHAFT AND CONNECTING RODS
ENG
*****************************************************
*****************************************************
NOTE:
CAUTION:
*****************************************************
If journal bearing inside diameter is “45.03”
and crankshaft journal outside diameter is
“44.98”, then the main journal oil clearance
is:
Main journal oil clearance:
Journal bearing inside diameter –
Main journal outside diameter =
45.03 – 44.98 = 0.05 mm
If the oil clearance is out of specification, se-
lect a replacement bearings.
10. Select:
Main journal bearing
Selection of main journal bearings:
Remove the main journal bearings out of
crankcase.
Clean the bearing seat in the crankcase
where the bearing is fitted.
Measure the diameter a of the bearing seat
at two places.
If the diameter of the bearing seat in the crank-
case exceeds 49.02 mm, the crankcase should
be replaced with a new one. The new crankcase
includes new journal bearings. The each inside
diameter of bearing is normally 45.000
45.012 mm.
The average of the two values is used to
choose the bearing.
Select the proper oversized main journal
bearing with the following table.
DIAMETER OF
THE BEARING SEAT
COLOR CODE
49.000 49.010 mm blue
49.011 49.020 mm green