B.IX FRONT DRIVE AXLE (SIDE DRIVEN)
DESCRIPTION
The
four
wheel drive
(OT)
version
of
the
tractor
is
obtained by replacing the
front
axle
of
the
tractor
with
a housing that has a centrally pivoted dif-
ferential. Through the use
of
a reduction gearbox
(Fig. B.IX/17), located on the side
of
the gearbox,
power
is transferred
from
the gearbox to
the
reduction gear to the front differential via the car-
danic shaft.
The planetary axis
of
the differential
transmit
the
motion
to
the front wheels by two
homokinetic
joints.
The front transmission is engaged by
shifting
up-
ward the
control
lever (M, Fig. B.IX/18).
FRONT DRIVE AXLE REMOVAL
1.
Apply the hand brake and insert wood
wedges to block the drive wheels.
2.
Remove the transversal and the
longitudinal
drag links.
3.
Place a hydraulic jack under the front axle,
remove the swinging axle retaining screw
(Item 513, B.IX/11) and finally
the
swinging
axle by means of
puller
A (Fig. B, B.IX/1).
4.
Raise
the
tractor, remove
the
drive
shaft
retaining threaded ring, remove the front
drive wheels (Fig. B.IX/2) together
with
the
U-joint cross and the fork,
completely
assembled and recover the
two
thrust
washers.
NOTE: Prior to removing the casing under
the
tractor
it
is advisable
to
loosen the
front
wheel
retaining screws in order
to
make easy the fur-
ther
operations.
FIG. B.IX/1 REMOVING THE FRONT DRIVE
AXLE SWINGING AXLE
A. Puller
FIG. B.IX/2 REMOVING THE FRONT DRIVE
AXLE
C. Rolling ficture;
2.
Drive shaft;
52.
Swing Shaft
DISASSEMBLY
The
following
operations and figures are referr-
ing
only
to
the differential, steering knuckle and
left
wheel hub assembly; for the right wheel the
procedure is similar.
In order
to
facilitate the removal fix the front axle
on a support. Dismantle the front drive axle as
follows:
1.
remove the front wheels, complete;
2.
remove assembly
of
U-joint cross, flange and
fork
after
screwing back
the
nut
which
protects
the grooves against dirt;
3.
remove the steering levers,
right
and
left
(Items 3 and
4,
Fig. B.IX/3)
together
with
transversal drag
link
(5)
as an assembly;
FIG. B.IX/3 FRONT DRIVE AXLE, COMPLETELY
ASSEMBLED, FITTED
ON
ITS SUPPORT
T.
Oil
plug;
5.
Transversal drag
link;
3.
Steering
lever, R.H.;
4.
Steering lever, L.H.
Power
Train·
112
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