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PART 2-2
-BRAKE
SYSTEM
2-11
H1217-A
FIG.
10-Retracting
Spring
Installation
where
the
brake
shoes
contact
the
carrier
plate.
3. Position
the
brake
shoes
on
the
carrier
plate
and
secure
the
as
sembly
with
the
hold-down
springs.
On
the
rear
brake,
install
the
park
ing
brake link
and
spring.
Connect
the
parking brake
cable
to the
park
ing
brake lever
(Fig.
1).
4. Install
the
anti-rattle
clip
and
the
anchor pin
plate
on
the
anchor
pin.
5. Place
the
cable
eye
over
the
anchor
pin
with
the
crimped
side
toward the
carrier plate.
6. Install
the
secondary
shoe
to
anchor
spring (Fig.
10).
7. Install
the
cable
guide
on
the
secondary
shoe
web with
the
flanged
hole properly
fitted into
the
hole
in
the
secondary
shoe
web.
Thread
the
cable
around
the
cable
guide
groove
(Fig.
1).
It is imperative
that the
cable
be
positioned
in
this
groove
and
not
between
the
guide
and
the
shoe
web.
8. Install
the
primary
shoe
to
anchor
spring
with
the
tool
shown
in Fig.
10.
Be
certain
that the
cable eye
is
not cocked
or
binding
on
the
an
chor pin when
installed. All
parts
should
be flat
on
the
anchor
pin.
9.
Apply
high-temperature
grease
(Stanalube
Moly
Grease Grade
2)
to the threads
and
the
socket end of
the
adjusting
screw.
Turn
the
ad
justing
screw
into
the
adjusting
pivot
nut
to
the
limit
of
the threads
and
then
back
off
Vi
turn.
Interchanging
the
brake
shoe
adjusting
screw
assemblies
from
one
side
of
the
car
to
the
other
would
cause
the
brake
shoes
to
retract
rather
than
expand
each
time the
automatic
adjusting
me
chanism
operated.
To
prevent
in
stallation
on
the
wrong
side
of
the
car,
the
socket end of
the
adjusting
screw
is
stamped
with
an
R
or
L
(Fig. 11). The adjusting
pivot
nuts
can
be distinguished
by
the
number
of
grooves
machined
around
the
body
of
the
nut.
Two
grooves
indi
cate
a
right
hand
nut;
one
groove
indicates
a
left hand
nut.
10. Place
the
adjusting
socket
on
the
screw
and
install
this
assembly
between
the
shoe
ends
with
the
ad
justing
screw
toothed
wheel
nearest
the
secondary
shoe.
11. Hook
the
cable
hook
into
the
hole in
the
adjusting lever.
The
ad
justing
levers
are
stamped
with
an
R
or
L
to
indicate
their
installation
on
a
right
or
left hand
brake
as
sembly (Fig. 11).
12. Position
the
hooked
end
of
the
adjuster
spring completely
into
the
large
hole in
the
primary
shoe
web.
The
last
coil
of
the
spring
should
be
at
the
edge
of
the
hole.
Connect
the
loop
end
of
the
spring
to the
adjuster
lever hole.
13. Pull
the
adjuster
lever,
cable
and
automatic
adjuster
spring down
and
toward
the
rear
to
engage
the
pivot
hook in
the
large hole in
the
secondary
shoe
web
(Fig. 1).
14. After
installation,
check
the
action of
the
adjuster
by
pulling
the
section
of
the
cable
between
the
cable
guide
and
the
adjusting lever
toward the
secondary
shoe
web
far
enough
to
lift
the
lever
past a
tooth
on
the
adjusting
screw
wheel.
The
lever
should
snap
into
position
be
hind
the
next
tooth,
and
release
of
the
cable
should
cause
the
adjuster
spring
to
return
the
lever
to
its orig
inal
position.
This
return
action
of
the
lever
will
turn
the
adjusting
screw
one
tooth.
If pulling
the
cable
does
not pro
duce
the
action
described,
or
if
the
lever
action
is
sluggish
instead
of
positive
and
sharp,
check
the
posi
tion
of
the
lever
on
the
adjusting
screw
toothed
wheel.
With
the
brake
in
a
vertical
position
(anchor
at
the
top),
the
lever
should
contact
the
adjusting
wheel
Mo
inch (plus
or
minus
%2
inch)
above
the
center-
line
of
the
screw.
If
the
contact point
is
below
this
centerline,
the
lever
will
not
lock
on
the
teeth
in
the
adjusting
screw
wheel,
and
the
screw
will
not
be
turned
as
the
lever is
actuated
by
the
cable.
To
determine
the
cause
of
this
condition:
a.
Check
the
cable
end
fittings.
The
cable
should
completely
fill
or
ADJUSTING
LEVER
ADJUSTING SCREW
IDENTIFICATION
LINES
HU43-A
FIG. 11
-Adjusting
Screw
and
Lever Identification
extend
slightly beyond
the
crimped
section
of
the
fittings. If
it does
not
meet
this specification,
possible
dam
age
is indicated
and
the
cable
as
sembly
should
be
replaced.
b.
Check
the
cable
length.
The
cable
should
measure
WVa
inches
(plus
or
minus
Vqa
inch)
from
the
end of
the
cable
anchor
to the
end
of
the
cable
hook.
c.
Check
the
cable
guide
for
damage.
The
cable
groove
should
be
parallel
to the
shoe
web,
and
the
body
of
the
guide
should
lie
flat
against
the
web.
Replace
the
guide
if it
shows
damage.
d. Check
the
pivot
hook
on
the
lever. The hook
surfaces
should
be
square
with
the
body
of
the
lever
for
proper
pivoting.
Replace
the
lever if
the
hook
shows
damage.
e.
See
that
the
adjusting
screw
socket
is
properly
seated
in
the
notch
in
the
shoe
web.
WHEEL
CYLINDER REPAIR
DISASSEMBLY
1. Remove
the
links
and
the
rub
ber
boots from
the
ends of
the
brake
cylinder.
Remove
the
pistons, cups,
and return
spring from
the
cylinder
bore (Fig. 12).
2. Remove
the
bleeder
screw
from
the
cylinder.
INSPECTION
1.
Wash
all
parts
in
clean
de
natured
alcohol.
If
alcohol
is
not
available,
use
specified
brake fluid.
Dry
with
compressed
air.
2.
Check
all
internal
parts
for
excessive
wear
or
damage. If
any
of
the
internal
parts
require
re
placing,
all
should
be
replaced.
3.
Inspect
the
cylinder
bore
for
score
marks
or
rust.
If
either
con
dition
is
present,
the
cylinder
bore
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