BRAKES
SPECIFICATIONS
(CENTER PLANE BRAKES)
Drum
Diameter
.......•......•
.
..•
..
•..
.
Lining:
Type
Attachment
Width
..............
.
.•...
_,_
....••..
Thil
:KneS!
...................
.
••....
• .
Brake Shoe Hcturn Tension
......
.....
.
Using Fish Scale H
oo
ked at Toe of Shoe
.....
Brake Penal Free Play
(inches)
......
.
....
.
Wheel Cylinder Bore:
Front - Upper and Lower
..
Rear
.......
.
...................
. .
..
.
Master
Cylinder
Bore
........
.
Pi
ston
Clcarllnce:
Master ann Wheel
Cy
l
inder.
.......
.
DESCRIPTION
Center
Plane
brakes
are
of
the
d
rum
type, with
floating shoes mounted between two plates
lo-
cated
on
the
center
plane of the linings (Figs.
land2)
,
With
the
wheel cylinders mounted in the
same plane,
braking
forces
are
transmitted
equally across
the
width of the lining, giving
uniform
pressure
against
the
drum
at
all times.
The web of the shoe is calibrated in depth, so
that
when
the
brakes
are
applied, equal pres-
sures
are
also applied to
the
brake
drums
along
the
entire
length
of
the
lining.
7
All
Model3
Center
Pl
ane
~
Fl
oating Shoe)
H
rdra
ul
ic
12"
Molded Asbestos
Cydebond
70
Ibs.
±
Sib
s.
@
2:y,
(I"
J nstalled Length
35
10 451bs. r
equired
to break
con
tact
between shoe and push rod
Yc/'
to %"
1
%"
I ',k"
1%"
.003" to .006
5"
The new
Ce
nter
Plane brakes have more re-
serve, less fade and more lining
area
than
the
brakes
previously used, and because of
the
lower
unit
pressure
(reducing
peak
temperature),
as-
sures
more stable
braking
under
extreme
con-
ditions
an
d longer life.
BRAKE ASSEMBLIES
The shoes
are
n
ot
anchored
but
are
held in po-
sition by
the
brake
shoe
return
springs. One end
of each
spri
ng
is
hooked
in
the
loop of
the
re-
turn
spring
links.
The
other
end engages
the
web of
the
shoe.
To Next Page
Loading...
