3. 5 UPPER AN D LOW ER CRANKCASE
53
TOP GEAR: (Fig. 3. 109 F)
The free rotat ing main shaft fifth gear (M 51
receives it drive power by being er.gaged to M 2
M 3 gears by a dog . The pow er of the main
shaft is thus transmitted from M 5 to the counter-
shaft
fifth gear IC 5) to drive the countershaft and
the drive sprocket on the end.
L. Transmission Disas sembly
The transmission can be disassembled by sepa·
rating the upper and lower crankcase in accordance
with
ti1e instructions in section 3. 5. C
M . Inspection
l. Ma in shaft, countershaft diameter (fig . 3.
110 A, 110 El)
Item
Shof.t
O.D.
Standard value ! Serviceable limit I
19.959-l9.98mmj Replace if under I
10.7858-0.7866 inl,l 9.94 mm I0.785 ini
' I
2. Spline clearances M to M 2-3, C to C 4 and
C 5 (f ig. 3. 111)
Item Standard value ! Serviceable limit I
Spline I 0.03- 0.096 mm I Replace if over I
clearance ,I0.0012 - 0.0038 inl 0.15 mm I0.0059 inl
3. Backlash (Fig. 3. 112)
Item
Standard value
i Serviceab le I imi t
i
' L 0.032-0.096 mm i Replace if over
_ ow m.oo 13-0 0038 inl;_ 0 15 mm 10.006 inl
I , 0.089 -0. 179 mm , Replace if over
Backlash\
2
nd l[0.0035-0.0071
inll 0.2 mm 10.08 inl
I
!3rd.4th,' 0.09 4- 0. 188 mm ! Replace if over
. Top
110.0037-0.0074 inil 0.2 l mmt0.0082 inl
4. Main shaft, counter shaft bearing inside diam-
eter
Item
Bearing
I.D.
Standard value : Serviceab le limit I
I --- - - - ---- ··--- ·- ·- - ----
t 20.02 -2 0.033 mm .
1
Replace if over
!10.7882-0.7887 inl 20.06 mml0.789 inl \
5. C l g,gar bore
Item
Standard value
Serviceable limit
Bore Dia.
I 20.0-20. 021 mrn Replace if over
i0.787 4- 0.7882 inli20.05 mm l0 .789 inl
- - - ---- ------ --- -- - -- -
Fig. 3. J09F Top
Fig. 3. 110 A
(D Main shaft outside diameter
Q)
Fig. 3. I JOB
(D Counter shaft outside diameter
Fig. 3. 111 Measuring spline clearance
I
i
_J
Q)
· I
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