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2-12
GROUP
2
BRAKES
FRONT BRAKE CYLINDER
BOOT
BOOT
BLEEDER
PISTON
SCREW
CYLINDER
RETURN
SPRING
REAR BRAKE CYLINDER
PISTON
BOOT
BOOT
PISTON
PISTON
CYLINDER
FIG. 12
Front
and
Rear Brake Wheel Cylinders
H1152-A
must
be honed.
However,
the
cyl
inder
should
not
be honed
more
than
0.003 inch
beyond its
original
diameter.
4.
Check
the
bleed hole
to
be
sure
that
it is
open.
ASSEMBLY
1.
Apply
a
coating
of
heavy-duty
brake fluid
to
all
internal
parts.
2. Thread
the
bleeder
screw
into
the
cylinder
and
tighten
securely.
3.
Insert
the
return
spring, cups,
and pistons
into
their
respective posi
tions
in
the
cylinder
bore (Fig. 12).
Place
a
boot
over
each
end
of
the
cylinder.
WHEEL CYLINDER REPLACEMENT
REMOVAL
1. With
the
wheel
in
a raised posi
tion,
remove
the
wheel
and
the
drum.
2.
Remove
the
brake
shoe
as
semblies,
following
procedures
out
lined
in
this
section.
3.
Disconnect
the
brake
line
from
the
brake
cylinder.
Be
sure
the
engine
is
stopped
and
there
is
no
vacuum
in
the
booster
system
be
fore
disconnecting
the
hydraulic
lines.
To
disconnect
the
hose
at a
front
cylinder,
loosen
the tube
fitting
that
connects
the
opposite
end
of
the
hose
to the
brake
tube
at
a
bracket
on
the
frame. Remove
the
horseshoe-
type
retaining clip
from
the
hose
and
bracket,
disengage
the
hose
from
the
bracket,
then
unscrew
the
entire
hose assembly from
the
front
brake
cylinder.
At
a
rear
cylinder,
unscrew
the
tube
fitting
that
connects
the
tube
to
the
cylinder.
Do
not
pull
the
metal
tube away
from
the
cylinder.
Pulling
the
tube
out
of
the
cyl
inder
connection
will
bend
the
metal
tube
and
make
installation
difficult.
The
tube
will
separate
from
the
cylinder when
the
cylinder
is
removed
from
the
carrier
plate.
4. Remove
the
brake
cylinder re
taining
bolts
and
lock
washers
and
remove
the
cylinder.
INSTALLATION
Wipe
the
end(s)
of
the
hydrau
lic line
to
remove
any
foreign
mat
ter
before making
connections.
1. To install
a
front
cylinder:
a.
Insert
a
front
cylinder
into
the
opening
on
the
carrier
plate
with
the
inlet
toward
the
rear
of
the
car.
Install
the
retaining
bolts
and
lock
washers.
b. Install
a
new copper gasket
over
the
hose fitting. Screw
the
hose assembly into
the
cylinder.
c.
Engage
the
opposite
end of
the
hose
to
the
bracket
on
the
frame,
install
the
horse
shoe-type
retaining clip,
and
connect
the
brake
tube
to
the
hose
with
the tube
fit
ting
nut.
Tighten
the
nut
to
specification
with
Milbar
tool
1112-144
or
its
equiva
lent.
2. To install
a rear
cylinder:
a.
Place
the
rear
wheel
cyl
inder
into
position.
Enter
the
tubing
into
the
cylinder,
and
start
the
tube
fitting
nut
into
the threads
of
the
cylinder.
b.
Secure
the
cylinder
to
the
carrier
plate
by installing
the
retaining
bolts
and
lock
washers.
c.
Tighten
the tube
fitting
nut
to
specification
with
Milbar
tool
1112-144
or
its
equiva
lent.
3. Bleed
the
brake hydraulic
sys
tem
as
detailed
in
Section 2.
BRAKE CARRIER PLATE
REPLACEMENT
REMOVAL
1. Remove
the
wheel
and
brake
drum.
Disconnect
the
brake
line
from
the
brake
cylinder.
2. Remove
the
brake
shoe
and
adjuster
assemblies
and
the
wheel
cylinder
as
outlined
in
this
section.
On
the
rear
wheel,
disconnect
the
parking brake lever from
the
cable.
3. If
the
rear carrier
plate
is
be
ing
replaced,
rotate
the
axle
shaft
so
that
the
hole
in
the
axle
shaft
flange lines
up
with
the
carrier plate
retaining
nuts and remove
the
nuts.
Pull
the
axle
shaft
assembly
out of
the
housing
with
tool-4235C
and
a
slide
hammer (Part
4-2),
and
then
remove
the
carrier
plate.
If
the
front
carrier plate
is
being
replaced,
remove
the
bolts
and nuts
that
secure
the
plate
to the
front
wheel spindle and remove
the
plate.
INSTALLATION
1. Position
a new rear carrier plate
on
the
retaining
bolts
in
the
axle
housing
flange. Insert
the
axle
shaft
into
the
housing
so
that the
splines
engage
the
differential
side gear
with
the
bearing
retainer
sliding
onto
the
retaining
bolts
and
against
the
car
rier
plate.
Install
the
retaining
nuts
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