1938 LaSalle Production - GM Heritage Center

standpoint and in view of the results obtained there is no
equal to Cadillac-designed Knee Action and to the
Cadillac-LaSalle ride.
In Cadillac Knee Action each front wheel is fastened
directly to the frame by two heavy forged forked arms
which hold the wheels in perfect alignment. This construction
is far superior to the conventional axle suspension
in that the movement of either wheel is not
transferred to the steering system. This eliminates car
wander and shimmy. Steering is much less affected in
event of tire blowout at high speeds. Caster angle is not
affected by brake or spring action.
The upper forked arms are attached to and operate
the shock absorbers which dampen excessive spring
action. The lower arms are fastened with shaft supports
to the frame, an inherently rigid method of mounting.
LaSalle
Sixty
Action
and
Knee
All models have threaded bushings at the inner ends
of the lower control arms. Oil retaining rubber seals
are used. This change on LaSalle makes a material
improvement in quietness and serviceability.
Each front spring consists of a helical coil held between
a seat on the lower forked arm forging and a
second seat formed as an integral part of the chassis
frame. Front frame arms encircle the helical coils on
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REVISED 12-15-37