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FIG. 17-
Expanding
Brake Shoes
screw with a thin uniform coating of
Moly grease.
Any other
adjustment
proce-
dure may cause
damage
to
the
adjusting screw
with
consequent
self-adjuster problems.
4.
Apply
a small
quantity of high-
temperature
grease to the
points
where the shoes contact the
backing
plate,
being careful not to get the
lubricant on the linings. Install the
drum.
On front
wheels,
install the wheel
outer bearing, washer, and adjusting
nut, then adjust the wheel
bearings
as
outlined
in Group
3.
5.
Install the wheel on the drum
and tighten the
mounting
nuts to
specification.
·
6.
Install the adjusting hole cover
on the brake
backing
plate.
7.
When
adjusting
the rear brake
shoes, check
the parking
brake cables
for proper
adjustment.
Make sure
that the
equalizer
lever
operates
freely.
8. After the brake shoes have
been
properly adjusted,
check the
operation of the
brakes.
PART
2-2-BRAKE SYSTEM
BRAKE SHOE ADJUSTMENT
-TAXI
The brakes should
be adjusted
.
when the drums are at
normal room
temperature.
If the shoes are
adjusted
when the drums are hot,
dragging
brakes may result when the
drums
cool.
1. Raise the car until the wheels
clear the floor. If the car is on a
frame contact hoist,
disconnect
the
parking
brake cables to
prevent
their
tightening
when the rear axle and
springs
sag.
2. Remove
the
adjusting
hole
cover from the bottom of the brake
carrier
plate,
and turn the
adjusting
screw ,,..ig. 17} until
a'
slight
drag on
the
wheel
is noted.
3.
Back
off the
adjustment
just
enough
to allow the
wheel to rotate
freely.
If it fails to rotate
freely,
the
wheel
and drum should be
removed
and the dust blown off the brake
shoes and carrier
plate. Apply a light
coating
of
Lubricant
to the
brake
shoe-to-plate
contact
points.
Install
the wheel and drum,
and
adjust
the
brake again.
Install
the
adjusting
hole cover.
4. Adjust
the
remaining
brakes.
5.
If
necessary,
connect and ad-
just the
parking brake
cables (see
Page
2-3).
6.
When
all brake shoes have
been
adjusted,
check the
operation
of the brakes.
HYDRAULIC LINE REPAIR
Steel
tubing
'
is used
throughout
the
brake system
with the
exception
of
the flexible
hoses at the
front
wheels and at the rear axle
housing
brake tube
connection.
Always bleed the applicable
primary or secondary brake
sys-
tem after primary or secondary
EJ
REMOVAL AND INSTALLATION
FRONT BRAKE DRUM
REMOVAL
I. Raise the vehicle until the wheel
and
tire clear the
floor.
Remove the
wheel cover
or
hub
cap,
and remove
the wheel and
tire
frotn the drum.
l. Remove the
grease cap from
the
hub.
Remove the cotter
pin,
nut lock,
adjusting nut,
and flat
washer from
the spindle. Remove the outer bearing
cone and roller
assembly.
3.
Pull the drum off
the
wheel
spindle.
4. If
the drum will not come off,
pry the rubber cover from the brake
backing
plate. Insert a narrow screw-
driver
through
the slot and
disengage
·
the adjusting lever from the adjusting
screw.
While holding
the adjusting
lever away from the scrt:w,
back off
the adjusting screw wj.th the brake ad-
justing tool
(Fig. 18}.
Be
very careful
not
to
burr,
chip,
or damage the
notches
in
the
adjusting
screw;
other-
wise
the self-adjusting mechanism will
not function properly.
2-15
brake system hose or line
re-
placement.
(See Page
2-3).
BRAKE TUBE REPLACEMENT
If a section of the brake
tubing
be-
comes
damaged,
the entire section
should be replaced with tubing of the
same type, size, shape and
length
.
Copper
tubing
should
not be
used in a
hydraulic
system. When
bending
brake tubing to fit
underbody
or rear
axle
contours,
be careful not to kink
or crack the tube.
All brake tubing should be double
flared
properly
to
provide
good leak-
proof
connections.
Clean the brake
tubing by flushing with
clean brake
fluid before installation
.
When
connecting
a tube to a hose,
t~be
connector,
or brake cylinder,
t1ghten the tube fitting nut to
specified
torque
with Milbar tool 1112-144 or
equivalent.
BRAKE HOSE REPLACEMENT
A flexible brake hose should be
re-
placed if it shows signs of softening,
cracking,
or other
damage.
When
installing
a new front brake
hose,
position
the hose to avoid con-
tact
with other
chassis
parts.
Place a
new
copper
gasket over the hose fit-
ting
and thread
the hose" assembly into
the front wheel
cylinder.
Engage
the
opposite
end of the hose to
the brack-
et on the frame
.
Install the
horsesho-
·
e -type retaining clip,
and connect the
tube to
the hose
with
the tube fitting
nut
.
A
rear brake hose should be
in-
stalled so that
it
does not touch the
muffler outlet pipe or shock
absorber.
Thread the hose into the rear brake
tube
connector.
Engage
the front end
of the hose to the
bracket
on the
frame. Install the
horseshoe-type
re-
taining clip, and connect the tube to
the h9se with the
tu~
fitting
nut.
INSTALLATION
I.
If
the drum is being replaced, re-
move the
protective
coating from the
new
drum with
carburetor degreaser.
Then, use sandpaper
to
insure that no
residue remains.
Wipe
the
drum
with
a cloth soaked
with denatured
alcohol.
Install new bearings and grease seal.
Pack the wheel
bearings,
install the
inner
bearing
cone and roller assembly
in the inner cup, and
install
the new
grease seal.
(see
Group 3).
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