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Power
Train
50
Tractors,
Lawn
and
Garden
-
110
and
112
SM-2059-
(Apr-67)
Clutch,
Brake
and
Variable
Speed
Drive
10-
9
REPLACING
SECONDARY
BELT
To
replace
worn
or
broken
secondary
belt,
move
variable
sp
eed
control
lever
forward
(fast
speed
position).
Turn
engine
over
momentarily
to
allow
variator
to m
ove
to
fast
speed
position.
Then
raise
secondary
idler
and
slip
secondary
belt
off
variator.
Remove
thr
ee
screws,
Figure
11,
from
input
sheav
e
and
slide
sheave
off
hub
far
enough
to
remove
belt.
Install
new
belt
around
variator
sheave.
Block
up
secondary
idl
e r
to
rel
ease
belt
tension
and
ins
tall
belt
and
input
she
av
e.
NOT
E:
If
transmission
ha.s
been
mOlJed
re
a
y-
wa
rd,
10
tak
e up
seco
ndary
bel!
sla
ck
/nior
to
bell
re/>lacemenl,
loo
sen
bolts
and
mo
t'
e
trans-
mis
sion
forward
before
in
sta
llingnew
se
con
dary
bell.
Ti.r,,-hlen
bolls
holdin
g
tr
ans
mission.
Readjust
varia
tor
ancl
brak
e
linka
ge
after
movin
g
tran
sm
issi
on
.
INSPECTING
V-BEL
TS
The
V-
belts
in
the
tractor
transmit
power
by
friction
an
d a
wed
gi
ng
ac
tion
against
the
sheav
e
s.
All
belts
and
s
he
av
s we
ar
with
use.
No
r m a l
we
ar
ca
n
be
recog
'
ni
z
ed
as
even
we
a
r,
both
on
th
e
belt
a
nd
sid
s
of
sheave.
A
sli
gh
t
raveling
of
th
e
be
ltcov
er
ingd
o -s not
ind
ica
te
premature
be
lt
fail
u
re.
Cut
off
the
ravel-
ing
w
hen
th
e
covering
b
eg
ins
to
p
ee
l.
When
evidenc
e
of
extreme
or
abnorm
a l
belt
wear
is
not;
~
d,
check
first
for
fa
ul
ty
sh
eaI'
s.
A
be
nt,
nick
ed
or
chipped
she
a ve
will
ca
use
r ap
id
be
lt
wear.
Rep
lae
she
a
ves
found
in
this
condi-
tion.
Be
lt
wear,
tr '
ctor
v
ibr
ati
on
an
d
erratic
o
p-
er
ati
on
w111
re
s
ult
when
dirt
bec
om
es
packed
:.ln
d lo
dg
ed
in
V-
g
ro
ov
s
of
the
sh
eav
e
s.
Ch
eck
especi
ally
t
he
var
ia tor
sheave.
Loos
na
nd
1 a n
di
r t f
rom
all
sh
ea
v
es.
Se
e p
age
10
-5
of
"Dia
gno
sin
g Ma
lfunct
ions
"
fo
r
oth
r
po
ss
ible
ca
us 's of
belt
we a
r.
CLEANING
V-BEL
TS
Clean
belts
by
wiping
them
with
a
clean
clot
h.
Av
o
id
use
of
sol
ve
nts
sinc
e
this
will
soften
th
e
materials
and
ca
use
the
clutch
to
grab.
Repl
a
ce
belts
found
to
be
oily
or
greasy.
Do
not
use
belt
dressings.
Dressings
often
give
only
temporary
g
rippin
g
ac
tion
while
soften-
in
g
the
belt
and
causing
eve
ntual
deterio
ra
t
io
n,
and
shortening
of
the
belt
life.
Dressings
also
will
cause
a " g
rabby"
clutch.
SERVICING
VARIATOR
REMOVING
VARIATOR
Fig.
12-Dis
a
sse
mbling
C
"n
ler
Varia/or
Shl>avc
Remove
prima
ry
and
s
eco
ndar
y b
It
from
vari
ato
r.
I
MP
OR TAN
T:
])0
not
pry
he
lls
O'I
'e y
sid
es
of
wr
i
at
or
.
Re
move
two
cap
sc
r
ews
f
rom
v
datar
arm
to
re
move
varia
to!'.
P la
ce
v r
ia
t
ol
'
half
sh
ave
(n
xt
to
bear
i
ng
support)
in
a v i
se
with
s
ft
j aws
as
s hown
in
Fi
gu
r e
12.
I
nsert
e
nd
s
of
t
wo
lar
ge
plm
ch
es
in
holes of
sh
eave
a
nd
a
ba
r
betw
,en p
un
ches.
Then
tu
r n c
oun
te
r c
loc
k
wis
e
to
re
m ove s hea
ve
. L
if
t
ce
nter
sh
ea
e
from
va
ri
tor
h
Ub.
L
it
ho
in U.S. A.