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6-18
REPLACEMENTS
CHASSIS SUSPENSION
(216)
ings to provide .0005" to .0025" clearance on
king pin.
5. Install grease fittings.
Figure 6-17-Burnishing Steering Knuckle Bushings
c. Installation of Steering Knuckle
1. Install steering knuckle by reversing the
removal
procedure.
Use shims as required be-
tween lower boss of knuckle and the thrust
bearing to provide .003" end play of knuckle
on knuckle support. Use new expansion plugs
at both ends of king pin.
2. Lubricate and adjust front wheel bear-
ings as described in paragraph 6-14.
3. Check and adjust caster, camber, and toe-in
(par. 6-30). Be sure to install grease fitting in
pivot pin bushing.
6-16 REPLACE UPPER PIVOT PIN AND
BUSHINGS
a. Removal of Bushings and Pivot Pin
1. Place jack under lower control arm, raise
wheel off floor, and remove wheel and tire as-
sembly.
2. Remove pivot pin bushing clamp bolt in
upper control arm, then remove both pivot pin
bushings from upper control arm, and remove
rubber seals.
3. Loosen clamp bolt in knuckle support and
remove pivot pin, using 1,4." hex Allen wrench.
NOTE: Tie
steering
knuckle support to upper
control arm to prevent damag
e
to
brake
hose.
b. Installation of Pivot Pin and Bushings
NOTE: The 1949 model upper pivot pins are
more
eccentric!
than prior model pins, to provide
a 50% greater range of camb
er adjustment.
The
bushings are also
different, therefore
neither
of these parts can be us
ed separately
with
prior
model pins or bushings.
Complete
sets of 1949
model
pivot
pins and
bushings
may
be
in stalled
in
1937
through 1948 Series 40-50-70.
1. Hold knuckle support in line with hole
through control arm and screw pivot pin into
knuckle support, with adjusting wrench hole
in pin toward the split side of control arm.
2. Turn pivot pin until the large diameter
section is centralized in knuckle support and
tighten the clamp bolt. Install rubber seals on
both ends of pivot pin.
3.
Centralize knuckle support boss in upper
control arm yoke and start the externally
threaded bushing on threads of pivot pin and
into threads of control arm.
4. Start the plain (grooved) bushing on
threads of pivot pin, then turn the opposite
bushing up tight. Turn the plain
bushing
up
until hex is just clear of control arm, then
install and tighten clamp bolts.
5. Check and adjust
caster,
camber, and to
e-in
(par. 6-30). Be sure to install grease fitting in
upper pivot pin bushing.
6-17 FRONT CHASSIS SPRING TRIM
DIMENSION
a. Checking Trim Dimension
Before measuring front spring trim dimen-
sion, bounce front end of car up and down sev-
eral times to make sure there is no bind in
front suspension and to let springs take a nat-
ural position.
Front springs are considered too high or too
Figure 6-18-Front Spring Trim Dimension
,
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