B.V INDEPENDENT HAND BRAKE
DESCRIPTION
The independent hand brake is
fitted
to
the
dif·
ferential drive
pinion
shaft
in the
compartment
between the
two
tapered roller bearings.
It
consists
of
the
following
main parts:
gear
Z = 34, Z =
18
teeth
(Item 22) assembled
to
the brake
disc
(Fig. B.V/1);
brake rod (Item 24)
adjusting
screw (Item 28)
brake shoe lever (Item 34)
brake shoe (Item 35)
At
brake
application,
the
shoe, made
of
friction
material,
which
is
resistant
to
oil, penetrates
into
the channel
build
up by the brake
disc
and the
gear side, braking in
this
way.
DISASSEMBLY
The independent hand brake and the in-
termediate
double
gear may be removed as
an
assembly
only
after
removal of the final drive
housings, according
to
the
instructions
given in
the respective chapter and then proceed as
follows:
1. remove the
circlip
for
shaft from lever head,
then the
differential
lock
control
pedal
bracket and the fixing screws and detach the
differential
lock
control
pedal
bracket
together
with
the pedal;
2.
remove the hand brake lever
lock
quadrant
(Item
70, Fig. B.V/1);
3.
loosen
lock
nut
(Item 29) and then remove the
hand brake lever
shaft
by easy hammering,
to
inside, recovering
the
"0"-ring;
4.
unlock
the
safety
plate
from
the
screw
head
(Item
98),
unscrew
and remove
the
safety
plate
from
the
shoe (Item 30)
lever
shaft
bushing
and
then
remove it,
setting
free
the
shoe lever;
5.
remove
the
shoe
lever
of
the
rear axle
hous·
In g.
REMOVAL
OF
DOUBLE
INTERMEDIATE
GEAR
1.
unlock
the
lock
washer
of
the
fixing
screw
head on
the
lock
plate
and remove the in·
termediate
shaft
using
a maneouvre
shaft
with
smaller
dia.,
so
that
at
the
complete
removal
of
the
intermedial shaft all parts,
which
were
fitted
on it,
should
remain on the
maneouvre shaft;
2.
pulling
back the maneouvre shaft, remove in
sequence all parts,
which
were
fitted
on the
intermediate shaft as:
3.
spacing
bushing (Item 80)
4.
washer (Item
83)
5.
double
intermediate gear (Item 79)
washer (Item 91)
Then remove the needle bearings from double in·
termediate gear inside, removing the
lock
rings
of
the bearings and pushing
out
the
two
needle
bearings together
with
the spacing ring (Item 96).
ASSEMB.LING THE DOUBLE INTERMEDIATE
GEAR
Insert in one
of
the holes
of
the gear the lock
washer (Item
91
),
then insert
onto
the gear in the
following
sequence:
the
first
needle bearing (Item 95)
spacing ring (Item 96)
the second needle bearing
the bearing
lock
ring inserted
into
the chan·
nel from the
other
gear end.
Prior
fitting,
lubricate the needle bearings
with
vaseline or
lithium
base.
Insert gradually on the rear part
of
the axle hous-
ing a maneouvre shaft
into
the left-hand side
bore
for
the intermediate shaft. During
this
operation insert on the shaft the
following:
1.
spacing
bushing
(Item 80)
which
should
be
placed
with
cutting
near the
toothing
Z = 45;
2.
washer (Item
83)
3.
double
intermediate gear, prepared in the
previous operation;
4. washer (Item 91).
After
this, take the intermediate shaft,
lubricate
it
with
oil and insert
it
through
the
front
housing
bore, passing all parts,
which
are
fitted
on the
maneouvre shaft. Insert
the
shaft
until
the
thicker
part reaches
to
the bore and
is
in the
same plane
with
the
housing
wall. Then fasten it
by
thei
lock
plate,
which
should
be
fitted
to
the
housing
by means
of
a
screw
provided
with
washer and bend
it
over the
screw
and
the
lock
plate.
1.
Check
for
slight
revolution by hand and
without
binding.
ASSEMBLING
THE
INDEPENDENT
HAND
BRAKE
Install
the
tapered roller bearings (Items
81
and
82), the assembled gear (22) and spacer
into
the
housing
and
adjust
bearings and
determine
ad·
justing
washers
thickness:
Power Train •
96
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