CHRYSLER SERVICE MANUAL
FRONT WHEEL SUSPENSION—3
Section I
TORSION-AIRE
FRONT WHEEL SUSPENSION
The Torsion-aire Front Suspension System Fig-
ures 1, 2 and 3 is retained on the 1958 cars.
This new suspension gives improved steering
and directional stability with the anti-brake dip
principle built into the design, the tendency of
the nose of the car to dip when braking is re-
duced to a minimum. Torsion bar springs also
permit relocating of steering linkage and con-
trol arm inner pivot points, so that their steer-
ing geometries are more nearly matched result-
ing in less wheel fight because the vertical
movements of the road wheels have little effect
on the steering linkage. The new system also
offers a number of other advantages in terms
of longer part life and ease of servicing.
1.
LUBRICATION
The suspension points requiring lubrication are
effectively sealed against entry of dirt, dust,
and water, however, the upper and lower ball
joints should be carefully lubricated. The fol-
lowing lubricating procedure is recommended:
Raise the front of the car in such a manner
that the weight of the car is on both lower
control arms as close as possible to the ball
joints.
NOTE:
When this has been properly executed,
the lower ball joint will be unloaded and the
upper control arm rebound bumper will be
away from the stop bracket on the frame.
Apply grease gun to fitting on lower ball
joint and lubricate generously. Trigger the
grease gun so that pressure is applied intermit-
tently. Applying the grease in this manner will
cause an up and down motion in the ball joint
assembly to assist in thoroughly lubricating the
joint. It is also advisable to turn the steering
gear to left and right to allow the grease to
penetrate the whole assembly.
NOTE:
The upper ball joint cannot be un-
loaded, but grease should be applied generously
while turning the steering and front wheel as-
sembly from left to right to allow the lubricant
to penetrate the joint.
CAUTION
Leaded compounds of more than 10% leaded
powder in the lubricant should never be used,
also the ball joints should not be heated or re-
worked. They should be replaced if found not
serviceable.
SERVICE PROCEDURES
2.
SERVICING THE FRONT
SUSPENSION SYSTEM
The upper control arms are mounted on remov-
able brackets which are bolted to the frame
sub side-rail. Shim packs are mounted between
brackets and frame side-rail to establish caster
and camber settings for each front wheel, as
shown in Figure 4.
The lower control arms are assembled to
pivot shafts and mounted to frame crossmem-
ber in replaceable rubber bushings, as shown
in Figures 5 and 6. The pivot shafts extend
through the crossmember and from the axis
of lower control arms. The steering knuckles
are connected, as shown in Figures 7 and 8, to
upper and lower arms through ball joints,
thus eliminating the king pins. This also elim-
inates the king pin inclination procedures and
the term "Steering Axis Inclination" will be
used hereafter.
To prevent the possibility of any fore and
aft movement of the lower control arms, a
strut is attached from frame crossmember to
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