Two-Cylinder Brake Shoe Removal And Installation; Brake Carrier Plate - F-250 And 350 And P-Series Trucks Except F-250 Trucks With 4-Wheel Drive - Front Removal; Two Cylinder Brake - Ford 1964 F-100 Shop Manual

2-20
G R O U P 2-BRAKES
BRAKE CYLINDER
COVER
BRAKE SHOE
GUIDE BOLT
NUT A N D
COTTER PIN
RETRACTING
SPRING
A N C H O R PIN 1
ADJUSTING SCREW
A N D WHEEL
ASSEMBLY
BRAKE SHOE
A N C H O R PIN SUPPORT
bly, remove the parking brake lever
from the secondary shoe.
INSTALLATION
1. Coat all points of contact be-
tween the brake shoes and the other
brake assembly parts with Lubriplate
or a similar lubricant. Lubricate the
adjusting screw threads.
2. Place the adjusting screw, sock-
et, and nut on the brake shoes so
that the star wheel on the screw i s
opposite the adjusting hole in the
carrier plate. Then install the adjust-
ing screw spring.
3. Position the brake shoes and
the adjusting screw parts on the car-
rier plate, and install the hold-down
spring pins, springs, and cups. W h e n
assembling a rear brake, connect the
parking brake lever to the secondary
shoe, and install the link and spring
with the shoes (Fig. 13). Be sure to
hook the parking brake cable to
the lever.
4. Install the anchor pin plate on
the pin.
5. Install the brake shoe retract-
ing springs on both shoes (Fig. 7),
being careful not to bend the hooks
or to stretch the springs beyond the
attaching points. T h e primary shoe
spring must be installed first.
6. R e m o v e the clamp from the
brake cylinder boots.
7. Install the wheel and drum.
8. Bleed the system and adjust
the brakes. Check the brake pedal
operation after bleeding the system.
Then lower the truck.
TWO-CYLINDER BRAKE SHOE
REMOVAL
1. Raise the truck until the wheels
clear the floor. R e m o v e the wheel,
and then remove the drum or the
hub and drum assembly. M a r k the
hub and drum to aid assembly in the
same position.
O n trucks equipped with vacuum
or air boosters, be sure the engine is
stopped and there is no vacuum or
air pressure in the system before dis-
connecting the hydraulic lines.
2. Clamp the brake cylinder boots
against the ends of the cylinder and
remove the four brake shoe retract-
ing springs with the tool shown in
Fig. 7.
3. R e m o v e the brake shoe guide
bolt cotter pin, nut, washer, and bolt
from both shoes, and remove the
shoes from the carrier plate (Fig.
10).
FIG. 1 0 — T w o Cylinder Brake
4. Remove the clamp-type adjust-
ing wheel lock from the anchor pin
support, and unthread the adjusting
screw and wheel assembly from the
anchor pin support.
INSTALLATION
1. Clean the carrier plate ledges
with sandpaper. Coat all points of
contact between the brake shoes and
other brake assembly parts with high
temperature grease.
2. Thread the adjusting screw and
wheel assembly into the anchor pin
support and install the clamp-type
adjusting wheel lock. Thread the ad-
justing wheel into the support so that
the brake shoe will rest against the
adjusting wheel end.
3. Place the brake shoe over the
two brake shoe anchor pins, insert
the ends in the brake cylinder links,
and install the shoe guide bolt, wash-
er, and nut (Fig. 10). Finger tighten
the nut, then back off one full turn,
and install the cotter pin.
4. Install the four retracting
springs with the tool shown in
Fig. 7.
5. Remove the cylinder clamps,
install the drum or the hub and drum
assembly, then install the wheel as-
sembly. Align the marks on the hub
and drum during installation.
6. Bleed the brake system and ad-
just the brakes. Lower the truck.
B R A K E C A R R I E R P L A T E —
F-250 A N D 350 A N D P-
SERIES TRUCKS EXCEPT F-250
TRUCKS WITH 4-WHEEL
DRIVE—FRONT
REMOVAL
1. R e m o v e the wheel and tire.
2. O n front wheels, remove the
grease cap, wheel bearing adjusting
nut, washer and outer bearing, then
remove the hub and drum assembly
from the spindle.
O n rear wheels, remove the rear
axle shaft flange retaining nuts and
axle shaft. R e m o v e the rear wheel
bearing lock nut, lock washer, and
adjusting nut, then remove the hub
and drum assembly from the axle
housing.
3. R e m o v e the brake shoes and
adjusting screw from the carrier
plate (See "Single Anchor Brake
Shoe"). Disconnect the brake line
from the brake cylinder and sub-
merge the end of the brake line in
a can containing a small amount of
brake fluid. This will minimize hy-
draulic line bleeding.
4. R e m o v e the carrier plate re-
taining bolts and nuts, then remove
the carrier plate from the front
wheel spindle or rear axle housing.
5. R e m o v e the retaining bolts and
lock washers, and the brake cylinder
from the carrier plate.