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P A R T 2-3-F-250 AND F-350, AND P-SERIES BRAKE SYSTEMS
2-21
INSTALLATION
1. Assemble the brake cylinder to
the carrier plate with the retaining
bolts and lock washers.
2. M o u n t the carrier plate to the
front wheel spindle or to the rear
axle housing flange, and secure with
the retaining bolts and nuts.
3. Install the brake shoes and ad-
justing screw to the carrier plate.
Connect the brake line to the brake
cylinder.
4. Install a front wheel hub and
drum assembly to the spindle. Install
the outer wheel bearing, washer, and
adjusting nut. Adjust the front wheel
bearings. Install the grease cap.
Install a rear wheel hub and d r u m
assembly on the rear axle housing.
Install the outer bearing and the ad-
justing nut, then adjust the wheel
bearings. Install the lock washer and
lock nut, then torque to specifica-
tions. Install the rear axle shaft gas-
ket and retaining nuts, then torque
to specifications.
5. Install the wheel and tire.
6. Bleed the hydraulic system and
adjust the brake shoes.
BRAKE CARRIER PLATE-
TRUCKS WITH 4-WHEEL
DRIVE—FRONT
REMOVAL
1. Raise the truck on a hoist.
2. R e m o v e the hub grease cap.
R e m o v e the hub retaining snap ring,
and slide the splined driving hub
from between the axle shaft and the
wheel hub. R e m o v e the driving hub
spacer. If the truck is equipped with
a locking type hub, refer to Part 4-4.
3. R e m o v e the lock nut, washer,
and
wheel bearing adjusting nut
from the steering spindle. R e m o v e
the wheel, hub and drum as an as-
sembly (Refer to Fig. 8, Part 2-2).
The wheel outer bearing will be
forced off the spindle at the same
time. R e m o v e the wheel inner bear-
ing cone.
4. Place a drain pan under the
spindle a r m assembly. R e m o v e the
oil baffle from the brake carrier
plate.
5. R e m o v e the cap screws which
retain the brake carrier plate and
spindle to the spindle arm. R e m o v e
the brake carrier plate and spindle
(Fig. 11).
INSTALLATION
1. Position the spindle and the
brake carrier plate on the steering
arm, and then install the retaining
STEERING
DRAG
BRAKE
AXLE
SPINDLE A R M
LINK CARRIER PLATE
SHAFT
ROD
SPINDLE
E1036-A
F I G . 1 1 -Brake Carrier Plate
Removal or Installation
cap screws (Fig. 11). Install the oil
baffle.
2. Install the wheel inner bearing
cone on the spindle. Install the
wheel hub and drum. Install the
driving hub spacer and then the
wheel outer bearing cone and ad-
justing nut. If the truck is equipped
with a locking type hub, refer to
Part 4-4.
3. Rotate the wheel in both direc-
tions and at the same time tighten
the bearing adjusting nut to bring
the bearing rollers into proper con-
tact. After the bearings are firmly
seated, back off the adjusting nut
Va turn (45°). Place the bearing
adjusting lock washer on the spin-
dle. M a k e sure the locking dowel
on the adjusting nut enters the lock
washer
hole
which
most
closely
aligns with the dowel. Install the
lock nut and torque to 4 0 ft-lbs
(Fig. 8, Part 2-2).
4. Install the driving hub and
snap ring. Install the grease cap.
5. Fill the spindle arm with the
proper grade and amount of lubri-
cant.
MASTER CYLINDER—F-250
A N D F-350 SERIES TRUCKS
REMOVAL
If the truck is equipped with a
vacuum booster, the engine must be
stopped and all vacuum must be ex-
pelled from the booster system be-
fore the hydraulic lines are discon-
nected.
I. If the stoplight
switch is
mounted on the master cylinder, dis-
connect the stoplight switch wires
from the switch, and disconnect the
brake line from the brake fitting.
2. Force as m u c h brake fluid as
possible from the master cylinder
STOPLIGHT SWITCH
TO RIGHT
TO REAR
TO LEFT
FRONT WHEEL
WHEELS
FRONT WHEEL
H1215-A
F I G . 1 2—Brake Master Cylinder
Installed to Booster
into a suitable container by pushing
d o w n the brake pedal all the way
several times.
3. O n a truck with conventional
brakes, disconnect the rubber boot
from the rear end of the master cyl-
inder in the cab. R e m o v e the bolts
that hold the master cylinder against
the dash panel, and lift the cylinder
away from the push rod and out of
the engine compartment.
O n trucks equipped with a dash-
mounted booster, remove the nuts
and washers that secure the master
cylinder to the power booster unit
(Fig. 12), and remove the master
cylinder.
INSTALLATION
1. O n a truck with conventional
brakes, position the rubber boot on
the piston push rod, guide the master
cylinder over the end of the push
rod, and position the cylinder against
the mounting surface. Install the
mounting bolts, and torque them to
12-18 ft-lbs.
O n trucks equipped with a dash-
mounted booster, install the master
cylinder over the push rod onto the
two studs in the power booster body.
Install the lock washers and retain-
ing nuts. Torque the nuts to specifi-
cations.
2. Connect the brake line to the
master cylinder fitting, but leave the
brake line fitting loose.
3. Fill the master cylinder reser-
voir with heavy-duty brake fluid to
within Vi inch of the top of the filler
neck.
4. Push the brake pedal
d o w n
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