DESCRIPTION
A 4-WD
tractor
is
capable
of
easily operating
and moving
around
in places such as marshy
land, slippery fields, hilly areas, etc., where an
ordinary
2-WD
tractor
would
have difficulty. In
the case
of
a
4-WD
tractor,
the
force applied
to
the
treads
of
the wheels
is
more
widely distri-
buted
than
with a 2-WD
tractor
since all the
tires
of
the
tractor
work
as
traction
wheels.
Consequently the
traction
of
the
tractor
is
considerably increased due
to
less slippage.
The
efficiency
of
the
tractor,
especially during
traction
operations, will be fairly improved
since the capacity
of
the engine can be effective-
ly converted into traction. Also, the climbing
capacity
of
its
front
axle
is
designed
to
be
heavier
than
that
of
a
2-WD
tractor;
therefore,
the
tractor
is
capable
of
stably
operating
in
sloping arears.
Axle
housings
Differential
Differential
shaft
FRONT
AXLE
&
STEERING
LINKAGE
SYSTEM
DR.IVE
CONSTRUCTION
The
mid-PTO
is
located
at
the
front
end
of
the transmission case.
The
front
propeller
shaft
and universal
joints
convey
power
from the
mid-PTO to
the
front
axle, which, like the rear
axle, consists
of
a dead axle (axle housings) and
a live axle (differential shafts, right and left).
In the axle housing are provided a bevel gear-
and-pinion assembly and a differential gearing.
Each differential
shaft
drives the
front
wheel,
not
directly
but
through
bevel pinions and a
final-drive
shaft
looking like a kingpin. These
pinions and
shaft
are housed in
what
is
termed
"gear
case." A knuckle arm
is
bolted
to
the final
case.
Gear
case
Pinion (15T)
) .
l I '
+J
Final
case
-----
Bevel gear
(29T)
Cover
Front
axle and wheels
4-1
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