Disassembly And Assembly - Ford Truck 1975 Shop Manual

11-10-5
Wheels, Hubs and Bearings—Front (Except Front Drive)
11-10-5
8. Bend the washer outward in two
places, on opposite sides of the lock
nut, to lock the outer nut in position.
9. Install the gasket and grease cap and
adjust the brakes. The final
adjustment must not result in a
preloaded bearing.
DISASSEMBLY AND ASSEMBLY
FRONT WHEEL GREASE SEAL
AND BEARING REMOVAL AND
INSTALLATION AND/OR
REPACKING
Wheel bearing lubricant is a lithium-
base grease, ESA-M1C75B.
Sodium-base grease is not compatible
with lithium-base grease and should not
be intermixed. Therefore, do not
lubricate front and/or rear wheel
bearings without first ascertaining the
type of original wheel bearing lubricant.
Usage of incompatible bearing lubricants
could result in premature lubricant
breakdown.
If bearing adjustment will not
eliminate looseness or rough and noisy
operation, the hub and bearings should
be cleaned, inspected, and repacked with
specified wheel grease. If the bearing cups
or the cone and roller assemblies are
worn or damaged, they should be
replaced.
P-350,-400 AND -500
1. Raise the vehicle until the wheel and
tire clear the floor. Remove wheel and
tire from hub. If drums will not
remove easily, back off the brake shoe
adjusting screw so that the shoes do
not contact the brake drum. Remove
grease cap from the hub.
2. Remove the cotter pin, nut lock,
adjusting nut and washer from the
spindle (Fig. 1, Part 11-02).
3. Remove the outer bearing cone and
roller. Pull the hub and drum
assembly off the wheel spindle. Then,
remove and discard the grease
retainer. Remove the inner bearing
cone and roller from the hub. Remove
all traces of old lubricant from
bearings, hubs, and axle spindle.
4. Inspect the cups for scratches, pits or
cracks. If the cups are worn or
damaged, remove them with a drift.
5. Clean the inner and outer bearing
cones and rollers with solvent and dry
thoroughly. Do not spin the bearings
dry with compressed air.
6. Inspect the cones and rollers for
cracks, nicks, brinelling, or seized
rollers. Inspect the grease retainer
and replace it if it is cracked, nicked,
or dented.
7. Cover the spindle with a clean cloth
and brush all loose dust and dirt from
the brake assembly. Remove the cloth
from the spindle carefully to prevent
dirt from falling on the spindle.
8. Install the inner and outer bearing
cups in the hub with the appropriate
installing tool (Fig. 1). Be sure to seat
the cups properly in the hub. The
cups will be properly seated when
they are fully bottomed.
9. Pack the inside of the hub with
C1AZ-19590-B Multi-Purpose
Lubricant. Fill the hub until the
grease is flush with the inside
diameters of both bearing cups. Pack
the bearing cones and rollers with
wheel bearing grease. Use a bearing
packer for this operation. If a packer
is not available, work as much
lubricant as possible between the
rollers and cages. Lubricate the cone
surfaces with grease.
10. Place the inner bearing cone and
roller in the inner cup and install the
grease retainer (Fig. 2) with the
appropriate driving tool. Be sure that
the retainer is fully bottomed.
11. Install the hub and drum on the wheel
spindle. Keep the hub centered on the
spindle to prevent damage to the
grease retainer or the spindle threads.
12. Install the outer bearing cone and
roller and the flat washer on the
spindle, then install the adjusting nut,
and adjust the wheel bearing as
outlined under Adjustments. Install
the adjusting nut lock, cotter pin and
grease cap.
F100-F350, E100-E350 DISC
BRAKE EQUIPPED
The removal and installation of front
wheel grease seals and bearings for disc
brake equipped vehicles differs only in
two respects from the procedure for
drum brake equipped vehicles.
First, it is necessary to remove the
brake caliper (refer to Part 12-24). In this
case, the caliper can be suspended by
wiring it above the hub and rotor. Be
careful not to twist or strain the flexible
brake line.
Then follow the procedure outlined for
P-350 and P-500 with only one exception: a
different Tool, T37T-1190-B is required to
install the special shielded grease seal.
Finally, install the brake caliper
following the steps given in Part 12-24.
NOTE: To prevent fluid leakage, tighten
the hose to caliper attaching bolt.
MEDIUM, HEAVY AND
EXTRA-HEAVY VEHICLES
There are two basic types of hub, disc
and cast, shown in Fig. 3. The basic
design of the hub bearings is the same in
all hubs, but minor differences in size
exist between the various models. The
outer bearing attaching parts differ
according to front axle weight capacity
as indicated in Fig. 3. For further detailed
views of hubs, bearings, and grease
retainers, see Fig. 4.
1. Raise the vehicle until the tires clear
the floor and install safety stands to
support the front axle. Remove the
grease cap and gasket from the hub.
2. To check the wheel bearing
adjustment, alternately push inward
and outward on the tire. If there is
any excessive looseness, or if there is
no end play, adjust the front wheel
bearing.
3. With 5000, 5500, 6000, 7000, 16000,
18000 or 20000-pound capacity front
axles, remove the cotter pin, adjusting
nut and flat washer from the spindle.
Proceed to Step 4.
With 9000, 12000 or 15000-pound
capacity front axles, remove the lock
nut, washer, locking ring and the
adjusting nut and pin. Proceed to
Step 4.
With a 12000-pound capacity
center point front axle, remove the
lock nut, inner washer, adjusting nut
and outer washer.
4. Inspect the condition of the spindle
and nut threads to insure a free
running nut when reassembling.