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CHASSIS SUSPENSION
REPLACEMENTS
6-17
the old cup out with a punch. Use care when
installing the new cup to start it squarely into
hub, to avoid distortion and possible cracking.
Install a new oil seal
packing, driving
it squarely
into the hub with a suitable flat tool to avoid
distortion.
4. When inspecting or replacing bearing cones
(inner races) make sure that cones are free to
creep on spindle of steering
knuckle.
The cones
are designed to creep on the
spindle
in order to
afford a constantly changing load contact be-
tween the cones and the ball
bearings.
Polish-
ing the spindle and applying bearing lubricant
before cones are installed will permit creeping
and prevent rust forming between cone and
spindle.
b. Installation of Wheel and Adjustment
of Bearings
1. Work approximately one tablespoon of
wheel bearing lubricant into each ball bearing
assembly and push
the
inner
bearing
cone into
place
in the
oil
seal packing.
If
this cone is
placed separately on the spindle there is dan-
ger
of damaging the oil seal packing when
wheel is installed on spindle.
2. After wheel, outer bearing and cone, safety
washer, and nut are installed, take up spindle
nut with 10" wrench until bearings are pre-
loaded at least one
(1)
hex
,
then rotate wheel
one (1) revolution to make sure bearings are
seated.
3. Back off spindle nut until bearings are
slightly loose. Tighten nut until all bearing
looseness is just removed, then line up nut to
nearest cotter hole and install cotter pin. Do not
mistake loose king pin bushings, etc
.,
for wheel
bearing looseness. CAUTION: Bearing preload
must not exceed
'ii2
turn of spindle nut.
4. Before installation of grease cap in hub,
make sure that end of spindle and inside of cap
is free of grease so that radio static collector
makes a good clean contact. Make sure that
static collector is properly shaped to provide
good contact between end of spindle and the
grease cap.
6-1 5 REPLACE OR REBUSH STEERING
KNUCKLE
a. Removal of Steering Knuckle
1. Remove front wheel with hub and drum
assembly.
2. Remove brake backing plate and steering
arm from steering knuckle. Do not disconnect
brake hose but support backing plate out of
way to avoid strain on hose.
3. Drive out king pin lock
pin.
4. Remove upper welsh plug from knuckle
by piercing with a sharp pointed punch and
prying
out.
5. Drive king pin down and out, which will
drive lower welsh plug from
knuckle.
Remove
thrust bearing and shims.
Figure 6-16-lnstalling Steering Knuckle Bushing
b. Rebush Steering Knuckle
New steering knuckles have bushings in-
stalled and reamed to size
.
Bushings are also
furnished separately for installation as fol-
lows:
1. Remove grease fittings and press old bush-
ings from steering knuckle, using Driver J
1382-3 and Press Plate J 1649. If bushings are
so tight that pressure springs yoke ends of
knuckle, place Spacer J 722-2 between yoke
ends to one side of bushing.
2. With oil hole in bushing in line with hole
for grease fittings, and with the short groove
on inside of bushing leading toward the expan-
sion plug seat, press new bushing into each
arm of steering
knuckle,
using Driver J 1382-3,
Spacer J 722-2, and Press Plate J 1649. See
figure
6-16.
3. Burnish
bushings,
using Burnisher J 722-1,
Spacer J 722-2, and Press Plate J 1649. See
figure
6-17.
The burnisher expands the bush-
ings tightly in place and sizes the holes for
reaming.
4. Use Reamer HM 592 to line ream bush-
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