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ID
19
OPERATION
No.
ID
45 1- 0
: Brake adjustments
Op.
ID
451-O
275
2
3
1
2
3
PARTICULAR
POINTS
Adjustment
of
a brake
unit.
Take up the clearance on the shoes, unscrew the screw locking the rear articulating
pin and level the brake unit.
Adjust
the height: the linings should stand proud
qf
the disc at the front by approximately
1 mm.
Centralising
the
rear
brake
shoes.
Use the fixture
2115-T.
(see M. 106).
TOOLS
ADJUSTMENT
OF
A BRAKE
UNIT
(see
Pl.
99
and
100).
Operate
the
handbrake
lever
several
times
in
order
to
take
up
the
clearance
of
the
shoes.
To
nosition
the
brake
unit
:
b)
cl
d)
e
1
Unscrew
the
screw
(39)
locking
the
pin
(40)
so
that
the
latter
can
slide
freely
in the
ball
(43).
NOTE
- If
the
screw
(39)
is
unscrewed
too
much
there
is danger
of the
thrust
pad
(42)
slipping.
Make
sure
that
the
slot
in the
ball
is
vertical.
Apply
the
brakes
by
operating
the
handbrake
lever
and
lock
in
this
position.
Tighten
the
screw
(39)
to
lock
the
pin
(40).
Make
sure
that
the
end
of
the
pin
(40)
is
level
with
the
inner
face
of the
brake
unit
at
"cl'
(see
Pl.
99,
fig.
2).
Tighten
the
retaining
screw
(39)
of the
pin
(40)
to
28.
8 ft.
lbs
(4
m.
kg).
Lock
the
screw
(39)
by
means
of a piece
of wire
threaded
through
the
holes
in the
heads
of
the
screw
(39)
and
of
the
lower
fixing
screw
(51)
of the
support
(41),
in order
to prevent
the
screw
from
turning
in the
direction
of
unscrewing
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
To
adjust
the
height
of
the
brake
unit.
Adjust
the
nuts
of
the
front
support
rod
(6)
so that
the
linings
stand
proud
slightly
at
the
front
of
the
brake
disc
by
approximately
Pl.
99,
fig.
1)
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
4 mm
box
spanner
1 mm
spanner
and
ox
spanner
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