3.
1
o·
·TRANSMISSION
5.
For
the
fourth
speed
The
M 3 gear
on
the
main
shaft
is,
by
operation
of
the
shift fork
in
shifting, dowel connected with
the free
M 4 gear
and
drive
is
transmitted from the
main
shaft
through
M 3 and M 4
gears
to
the
coupled
countershaft (C 4 gear omitted).
(Refer to Fig.
3. 117)
I. Disassembly
l.
Following
the
same
order
as
for
the
crankshaft
(Refer
to
Section 3. l l
),
separate the upper and
the lower
crankcase
and
remove
the
transmission
unit. (Refer to Fig. 118)
II. Inspection
l.
Measurement
of
clearance
in
the
axial and radial
directions for
the
transmission
main
shaft and
countershaft bearing.
(Refer to Fig. 3. 119)
Standard value
Correction
limit
Axial
Less
than
When over
clearance
0,05
mm
0.1
mm
(.004
8
1,
(.002'1 replacement
should
be
made.
Radial
0.01
to
,0;~5
mm
When over
dearance
1.0004 u ro
;0.01
8
1 0.05
mm
(.002
6
1,
replacement
should
be
made.
2. Measuring play
on
the
gear
tee.th
surface
of
the
transmission
unit.
(Refer to Fig.
3.
120)
Standard
value
Correction
limit
Play
0.089 to 0.178
mm
When
over
(.0034
11
lo .007
6
1
0.2
mm
(.0078
6
),
replacement
should be made.
fig.
3. 118
View
of
transmission
with
lower cran\case
separated.
fig.
3. 119 Measuria,1.:ehl0rance of the
1ransmiss1on
unit
bearing
fig.
3.
120 After the
transmission
and
crankshaft
are
coupled, the lower crankcase should be
matched
43
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