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5-8
BRAKES-SERVICE
(9) Using Tool C-3785 install the return spring in-
(10) Install the secondary return spring.
(11) Place the adjusting cable over the guide and
engage the hook of the cable into the adjusting le-
ver.
(12) Lubricate the wheel bearings and install the
brake drum and adjust the wheel bearing to the prop-
er preload.
(13) Adjust the brakes as described previously.
Installing the Rear Brake Shoes
(1) Inspect the platforms of
the support for nicks
or
burrs. Apply a thin coat of Sylglyde to the support
platforms.
(2) Attach
the
parking brake lever to the back side
of the secondary shoe (Fig.
8).
(3) Place the secondary and a primary shoe in
their relative position on a work bench.
(4)
Lubricate the threads of the adjusting screw and
install it between the primary and secondary shoes
with the star wheel next to the secondary shoe. The
star adjusting wheels are stamped
"R'
(right side) and
"L"
(left side), and indicate their location on the ve-
hicle.
(5) Overlap the anchor ends of the primary and the
secondary brake shoes and install the adjusting spring
and lever.
(6)
Holding the brake shoes in their relative posi-
tion and engage the parking brake cable into the
parking brake lever.
(7)
Install the parking brake strut and spring be-
tween the parking brake lever and the primary shoe
(Fig. 8).
(8) Place
the brake shoes on the support and in-
stall
the
retainer pins, springs and retainers.
IMPORTANT On Models AV-1, AV-2 install the
brake shoe retaining springs and attach to the re-
tainer clips.
(9)
Install the anchor pin plate.
(10) Install the "eye" of the adjusting cable over
the anchor pin and install the return spring between
the primary shoe and the anchor pin.
(11) Install the cable guide in the secondary shoe
then install the secondary return spring.
(12) Place the adjusting cable in the groove of the
cable guide and engage the hook of the cable into
the adjusting lever.
(13) Install the brake drum and retaining clips.
Install the wheel and tire assembly.
(14)
Adjust the brakes as described previously.
to the primary shoe.
BLEEDING THE BRAKE SYSTEM
Clean all dirt and foreign material from the cover
of the master cylinder to prevent any dirt from fall-
ing into the master cylinder reservoir when the cover
is removed.
Using the one man bleeder tank C-3496 (with adap-
tor C-3494A) provides a convenient means of keeping
the master cylinder full while pressurizing the hy-
draulic system for bleeding.
The brakes may also
b
bled manually by having an assistant slowly pump
the brake pedal while the brakes are being bled. Be
certain to refill the master cylinder after bleeding
each wheel.
Tighten the brakes of each wheel until
the
brakes
are locked. (This reduces the movement
of
the wheel
cylinder cups and assists in bleeding.)
Starting with the right rear wheel clean all dirt from
the bleeder valve. Place bleeder hose C-650 on the
bleeder valve and insert the other end of the bleeder
hose into a clean jar half filled with clean brake fluid.
(This will permit the observation of air bubbles as they
are being expelled from the hydraulic system and also
.
prevent air from being drawn back in to the system
as the brake pedal is released on manual bleeding.)
Follow the manufacturers instructions in the use of
the bleeder tools.
When manually bleeding the hydraulic system, push
the brake pedal down and let it return slowly, to avoid
air being drawn into the system. Bleed intermittent-
ly by opening and closing the valve about every four
seconds. This causes a swirling action in the cylinder
and assists in expelling the air. Continue the action
until the brake fluid is e
a solid stream, with-
out any bubbles.
Continue this bleeding operation on
the
other
wheels, starting with the left rear wheel, then
the
right front and finishing with the left front wheel.
If necessary, repeat this bleeding operation if there
is any indication (a low, soft or spongy brake pedal)
of air remaining in the hydraulic system. Readjust
the brakes as described previously.
Test for Fluid Contamination
To determine if contamination exists in the brake
fluid (as indicated by swollen or deteriorated rubber
cups), the following test can be made.
Place a small amount of the drained brake fluid into
a small clear glass bottle. Separation of the fluid into
distinct layers will indicate mineral oil content.
CAUTION: Be safe and discard old brake fluid that
has been bled from the system. Fluid drained from
the bleeding operation may contain dirt particles
or other contamination and should not
be
reused.
MASTER CYLINDER SERVICING
Removal
(1) Disconnect the push rod from
the pedal.
(2)
Disconnect the brake tube at the master cylin-
der outlet.
(3) Remove the nuts and bolts that attach
the
mas-
ter cylinder to the dash panel. Slide the master cylin-
der straight out and away from the dash panel.
(4)
Remove the push rod return spring.
xpelled in
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