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(203)
CHASSIS SUSPENSION
SHOCK ABSORBERS
6-5
frame cross member at top of kick-up, and
spring seats welded to the axle housing near
each end. On
1948
Series 50-70, the lower ends
of springs are seated on the strut rods just
ahead of axle housing. Ride control is provided
by a double-acting hydraulic shock absorber
mounted on each rear brake backing plate and
connected to the frame by a rubber bushed
steel link. Side sway of the chassis springs and
rear end of frame is prevented by the trans-
verse radius rod. Large rubber bumpers and
rubber rear axle stops are bolted to lower flange
of frame side rails over axle housing to limit
travel of axle housing during compression of
the chassis springs. See figure 6-5.
6-4 CHASSIS SPRINGS
a. Regular Chassis Springs
The front chassis springs have a small coil
at the top end only, which fits around a center
cup attached to the frame by one shock ab-
sorber bolt. A rubberized fabric insulator is
located between upper end of spring and the
frame.
The rear chassis springs have small coils at
both ends. The upper end of each spring is at-
tached to the frame by a bolt and
clamp.
A
rubberized fabric insulator is located between
upper end of spring and the
frame.
Another
insulator is located between the spring clamp
and the flat washer on attaching bolt. On Series
40 and
194.9
Series 50-70, the lower end of each
rear spring is attached to a spring seat on rear
axle housing by a spring clamp and bolt. On
1948 Series 50-70, the lower end of spring is
attached to the strut rod.
b. Optional High or Export Springs
For special
requirements, optional
high or ex-
PISTON
SPRING
SCREW
PLUG
COMPRESSION
CYLINDER
--l
DISC
- - -
I
GASKET
~
I
END
CAP~STON
J
BODY--
-"""7= 1 =
EXPANSION PLUG
~M
port front and
rear-springs
are available; these
are slightly longer than the regular springs.
Optional high or export front springs have the
same flexibility rate as the regular front springs.
Optional high or export rear springs have a
higher rate of flexibility than the regular rear
springs. The use of optional high or export
springs is explained in paragraphs 6-17 (front)
and 6-20 (rear).
c. Overload Rear Springs
Special rear chassis springs are available in
200 pound and 500 pound overload capacities,
for .use under abnormal load conditions. It is
not recommended that any series rear axle be
overloaded in excess of 500 pounds. Use of
overload rear chassis springs is explained in
paragraph 6-20.
d. Chassis Spring Identification
All front chassis springs are identical in ap-
pearance, and rear springs also. Chassis springs
are of different load capacities for different
models; therefore springs may not be
inter-
changeable between models. Each spring has
the part number stamped on one end coil for
identification.
The correct spring to use for
each model is specified in the Master Parts
List.
6-5 FRONT SHOCK ABSORBERS
Delco
double acting, opposed piston type hy-
draulic shock absorbers are used on all
models.
Front shock absorbers are mounted on top of
frame front cross
member.
Two of the
three
attaching bolts fit in reamed holes to insure
correct alignment of shock absorber with other
front suspension members. The arms
which
are welded to outer ends of shock absorber
CAM BUTTON
INTAKE AND RELIEF
VALVE ASSEMBLY
(REBOUND)
Figure 6
-6-Front
Shock Absorber-Sectional Vi_
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