,
NOTE:
The brake shoe
support
plate
1.3
serv·
iced as a complete assembly.
Brake
Shoe Installation
Position
brake
shoes in
the
support
plate. Make
sure wheel
cyUnder push rods properly engage
toe
end
of
shoes
and
that
shoes are
in
aUqnment
-
see
"Brake Shoe Aliqnment."
If
shoes have to
be
relined,
refer
to "Replacement of
Brake
Lining."
Fig. 9 - Installing Brake
Shoe
Return
Springs
with
Tool
C-3462
Install
the
brake
shoe
return
springs
using
tool C·3462
(Fig.
9).
Check tension of springs. Tension should be
70 pounds, plus
or
minus 5 pounds, installed
length.
This
can also
be
checked by hooking a
fish scale
at
toe of shoe and pulling shoe away
from
the
wheel cylinder. Scale should read 35
to 45 pounds before contact is broken between
web of shoe and wheel cylinder push rod.
NOTE:
Long end
of
brake
return
springs
mu
st
be hooked
in
shoes, otherwise brake noise
1v
ill
be encountered due to coil
of
springs contacting
shoes.
Install the
brake
shoe guide
sp
rin
gs, making
sure
positioning lip of
spring
engages
the
hole
in
the
support
plate (Fig_
6)_
Loosen
adjusting
cams and install hub,
drum
and wheel assemb
ly
.
Bleed
brake
system, refill
master
cylinder
to
proper
level and
adjust
brakes,
as
outlined
under
"Adjustment
of
Brakes."
11
FRONT BRAKE DISASSEMBLY
Brake Shoe Removal
Perform
the
operations
outlined
under
"Rear
Brake
Shoe Removal."
Support
Plate
Removal
With
the
brake
shoes removed, disconnect
th~
connector
tube
between
the
two
cylinders. Dis·
connect
the
flexible
brake
hose
at
the
upp
er
wheel cylinder and remove
the
wheel cylinder
mounting screw and lockwas
her
at
rear
of
brake
shield.
CAUTION:
Do
not
allow b
mke
fl
uid
to come
in
contact lv
ith
the
brak
e lining, either from.
dripping or
from
contact w
ith
soiled hands .
Remove
the
fo
ur
support
plat
e mounting
boits,
nut
s, and lock
wa
s
her
s and remove the
suppo
rt
plate.
Wheel
Cylinder
Removal
The
wheel cylinders can
be
removed
after
the
flhoes and
support
assembly
are
removed.
FRONT BRAKE ASSEMBLY
Place the wheel cylinder
int
o
po
sition in the
support
plate
as
sembly. Position
support
pl
ate
on the
brake
shield and install cylinder m
ount
·
ing screw !lnd lock washer,
but
do
not tighten.
NOTE:
Be
su
re the b
mk
e adjll
st
ing c
ant
rubber
dust
w ashe1
·s
an
: in place
a-nd
in g
oo
d condition
before installing the
SUPPO?'t
plate assembly.
Install the
four
support
plate bolts, loc
k·
washers, and nuts.
Tighten
to 35 foot-pounds
and
the
wheel cylinder mounting screw to
20
foot-pounds.
Install wheel cylinder
tube
and flexible
brake
hose.
Tighten
all connections securely.
Install
brake
shoes,
as
outlined
under
"R
e
ar
Brake Shoe
Installation."
BRAKE SHOE ALIGNMENT
To insure maximum
braking
effort, the
entir
e
length and width of the lining
must
contact
the
drum
upon
brake
application,
Examination
of
the
used lining will disclose
if
the shoe is out of
alignment. Misaligned shoes can
not
be
co
r-
rected by grinding and should be discarded.
The
brake
shoe suppo
rt
plate
as
sembly shou
ld
also
be
checked;
if
sprung
or damaged, replace
with a new
support
assembly.