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Operating
Instr
uctions for Cockshutt "30"
Tractor
TRANSMISSION
PLATE
No.
C·12-46
35
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•
CONSTRUCTION - A sliding
gear
type
transmission
is used giving
four
forward
speeds
and one reverse. An additional
"CREE
PER
GEAR" can be installed
as
an
extra
in
the
intermediate
gear
case, giving a total of 8 speeds
forward
and two reverse.
The
latest
types of alloys
are
used in the heat-treated
gears
and
shafts.
SHIFTING
- Conveniently located
at
the
base
of
the
shift
lever is a guide which shows
the
desired speeds.
Shifting
should
be
done
with
no clashing
and
the clutch should
be released slowly so as to
prevent
jerking
the
tractor
and
throwing
an unneces-
sary
strain
on
the
whole transmission
and
tra
ctor. To
shift
from,
or
to, the
"CREEPER"
SPEEDS,
leave
the
main
lever in
neutral
and
shift
the creeper con-
trol,
as
you would an
ordinary
shift
lever, to the desired position. (See paragraph,
"Creeper
Gear
Shift."
LUBRICATION -
Four
and
one-quarter
Imperial
gallons of S.A.E. 90 transmission oil
are
required to
bring
the
oil level up to oil level plug which is located on the
left
side of
the
case. See
Plate
No. C-9-46, item 20, on page 10.
BRAKES - Each
rear
wheel is controlled
by
a
separate
pedal
acting
through linkages to
external bands which contract on
drums
fastened to the bull pinions. With
this
con-
struction each wheel may be braked independently
for
short
turns
or together for
even action.
BRAKE
OIL
SEALS
- To prevent oil
seeping
out
past
the
brake
drum
threads
a special
rubber
ring
is used between the
drum
and
bearing.
If
this
special seal is remov-
ed it should be replaced
with
a little vaseline on
the
surface of
the
seal
for
easy
application
and
long life.
ADJUSTMENT
- The pedals should have a
free
movement of one inch to prevent brake
drag
and
if
more play develops, they should be adjusted. This is easily done by
removing
the
floor boards and
tightening
the long hexagon
nut
with a
pair
of
pliers. Be
certain
to have equal
brake
tension on both wheels. This can easily be
checked by
jacking
up both
rear
wheels,
starting
the engine
and
depressing the
pedals the same
amount
with
the
wheels
running
in
4th
gear. Both wheels should
slow down
at
the same time
and
also
tend
to reduce
the
speed of
the
engine. DO
NOT
adjust
for
band
wear
by
shortening
the
brake
rods.
CAUTION - Always lock
the
pedals
together
when going over 6 miles
per
hour.
CREEPER
GEAR
SHIFT
-
IMPORTANT
- Do
not
cha
nge from
standard
gear
to
creeper
gear
or from creeper
gear
to
standard
gear
while
tractor
is in motion.
STOP
the
tractor
an d f
ully
depre
ss
clutch
pedal
and
then
change from
standard
to creeper
gear
.
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