TRANSMISSION
AND
GEARSHJIT MECHANISMS
173
@
Removal
1.
Remove
th
e engine
an
d split
th
e cr
an
kcase as
described under
Crankcase Disassembly in
Chapter Four.
2.
Withdraw
th
e shirt fo
rk
sha
ft
(Figure 38).
3. Remove
th
e mainshart shifl
fo
rk
(Figure
39
).
4.
Rem
ove
th
e countershaft shift fo
rk
(F
igure 40).
5. Removc the shi
ft
drum (Figure
41
).
6. Remove both t
ra
ns
mi
ssion shaft asse
mbl
ies.
7.
In
spect
th
e transmission sha
ft
assemblies
as
described under
Tr
ansmission Preliminary
In
spection in
thi
s chapter.
Assembly
I.
In
sta
ll
th
e 2 t
ra
nsmission asse
mbl
ies
by
meshing
th
em toge
th
er
in
their proper relations
hi
p
to
each
o
th
er.
2. Insta
ll
bo
th
transmission asse
mbl
ies i
nt
o the
le
ft
-hand crankcase half (Figure 42).
3.
After both assemblies are
in
sta
ll
ed, tap on
th
e
end
of
both shafts (Figure
43
)
wi
th
a
pla
st
ic
or so
ft
-
fa
c
ed
mallet
to
make sure
th
ey
a
re
co
mpletely
seated.
4. Coat all bearing and sliding surfaces of the shift
drum with engine
or
assembly oil.
5. Install the shi
ft
drum (Figure
41
).
6.
Install
th
e
co
unte
rs
ha
rt
shirt fo
rk
(Figure 40)
into position in
it
s ge
ar
.
7.
In
sta
ll
th
e mainshaft shift fork (Figure 39) into
position in its gear.
8.
Mesh
th
e shift forks with
th
e shi
ft
drum a
nd
install
th
e shirt fork shart (Figure 38). Apply a
liberal coat of engine oil
0010
th
e shift fo
rk
sha
ft
and let
th
e oil run do
wn
the shaft a
nd
o
nt
o
th
e shi
ft
forks.
9. Make sure
th
e cam pin
fo
ll
owers are in mesh
with the groo
ve
s in
th
e shi
ft
drum.
10
. Ma
ke
su
re
th
e thrust washer (Figure 44)
is
still
in
sta
ll
ed on
th
e mainshaft.
NaTE
Th
e next procedure is b
es
t done with
th
e aid of a helper as
th
e transmission
assembli
es
ar
e loose and \1
'01
1 't spin
~
'ery
easil
y.
Ha
ve
a helper hold
th
e
crankcase and sp
in
th
e transmission
s
haf
t
wh
Ue
you turn the shift d
rum
through all
of
the gears,