Yamaha TDM850 1996 Service Manual page 180

CRANKSHAFT
3. Measure:
S Oil clearance (main journal)
Out of specification ! Replace bearing.
Oil clearance:
0.020 X 0.038 mm
<Limit>: 0.1 mm
Measurement steps:
CAUTION:
Do not interchange the bearings and connect-
ing rod. They must be installed in their original
positions, or the correct oil clearance may not
be obtained causing engine damage.
S Clean the bearings, main journals and bearing
portions of the crankcase.
S Place the upper crankcase on a bench in an up-
side down position.
S Install the upper half of the bearings 1 and the
crankshaft into the upper crankcase.
NOTE:
Align the projection a of the bearing with the
notch b in the crankcase.
S Put a piece of Plastigauge
journal.
NOTE:
Do not put the Plastigauge over the oil hole in the
main journal of the crankshaft.
S Install the lower half of the bearings into the lower
crankcase and assemble the crankcase halves.
NOTE:
S Align the projection of the bearing with the notch
in the crankcase.
S Do not move the crankshaft until the oil clear-
ance has been completed.
4-56
ENG
c on each main