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BRAKEGSERVICE
5-1 1
(1) Wash the wheel cylinder with alcohol and blow
(2)
Install the expansion spring
in
the cylinder. In-
'
stall the wheel cylinder cups in each end of the cylin-
der with the open end of the cups facing each other.
(3) Install the wheel cylinder pistons in each end
of the cylinder with the recessed end of the pistons
facing the open ends of the cylinder.
(4)
Install the boots over the ends of the cylinder.
Keep the assembly compressed with the aid of a
brake cylinder clamp until the brake shoes are assem-
bled.
dry with air.
Installation
(1)
Slide the wheel cylinder into position in the sup-
port. Install the attaching bolts and tighten securely.
(2) Apply sealing putty around the wheel cylinder
to prevent any water or dirt from entering the brake
assembly.
(3) Connect the brake tube to the wheel cylinder
and tighten to 95 inch-pounds (rear wheels) or connect
the brake hose to the wheel cylinder (front wheels),
and tighten to 25 foot-pounds, before connecting the
brake hose to the frame bracket.
CAUTION: Should the hose be connected to the
wheel cylinder last, the tightening of the hose
into the wheel cylinder will twist the hose, which
may result in suspension or tire interference.
(2) Remove the rear axle shaft and retainer.
(3) Disconnect the hydraulic brake line from the
wheel cylinder.
(4)
Disengage the brake cable from the parking
brake lever.
(5) Using a suitable tool compress the three flared
legs of the cable retainer and pull the brake cable out
of the support (Fig. 12).
(6) Remove the brake support from the rear axle
housing.
63x596
Fig. 12-Removing
Brake Cable from Support
BRAKE SUPPORT SERVICING
Front Support Removal
at the frame bracket.
move the four support attaching nuts and washers.
the spindle.
Front Support Installation
(1) With the brake shoes installed on the support,
apply a small amount of a putty type sealing material
around the back side of all holes and openings of the
support to prevent any water or dirt from entering
the brake assembly.
(2) Place the support on the spindle support and
install the attaching bolts, nuts and washers. Tighten
the attaching nuts to
55
foot-pounds.
(3) Connect the brake hose to the wheel cylinder
and tighten to 25 foot-pounds, before connecting the
brake hose to the frame bracket.
(4)
Install the brake drum and wheel bearings. Ad-
just the bearings. Bleed and adjust the brakes.
Rear Support Removal
move the four support attaching nuts and washers.
(1) Disconnect the brake line from the brake hose
(2) With the wheel and brake drum removed, re-
(3) Remove the support and brake assembly from
(1)
With the wheel and brake drum removed, re-
Rear Support Installation
(1) With the brake shoes installed on the support,
apply a small amount of putty type sealing material
around the back side of all the holes and openings
of the support to prevent any water or dirt from en-
tering the brake assembly.
(2) Bolt the support onto the rear axle housing.
(3)
Insert the rear axle shaft and retainer into the
housing and install the axle retainer nuts and wash-
ers. Tighten the retainer nuts to 35 foot-pounds.
(4)
Attach the brake line to the wheel cylinder and
tighten to 95 inch-pounds.
(5) Insert the parking brake cable into the support
plate and attach the cable to the parking brake lever.
(6) Install the brake drum and wheel. Bleed and ad-
just the brakes.
Wheel Stud Tightening
The tightening sequence and torque
o f
the wheel
stud nuts is
of great importance to insure efiicient
brake operation. The use
of
an impact or long han-
dled wrench may distort the drum.
A
criss-cross tightening sequence should be used
(Fig. 13). Tighten all the stud nuts to one-half and
specified torque first (30 ft. lbs.), and then repeat the
sequence tightening to the specified 55 foot-pounds.
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