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 9. Suspension
a. Springs.
(1) The springs are of semielliptic type with 12 leaves held
together by a center bolt and two small and two large
leaf clips. The center bolt end is peened over its hex
nut
to
prevent
it
from
coming
loose.
Two leaf clips
are
riveted
to
the
fifth
and
ninth
leaf.
Each clip is
closed at the top by a hex-head bolt which passes
through the clip and a clip spacer, and is held by a
hex nut over which the bolt end has been peeed.
(2) The ends of the spring seat in spring guide brackets
are secured to the axles. The center of the spring seats
in, and is clamped to, the spring seat assembly which
is secured to the tube with brackets assembly (trunnion
cross tube ).
(3)
A
U-bolt
on
each side of the spring hold the spring
The U-bolts fit over a spring saddle on
in
position.
top of the spring, down the sides of the spring and
through the spring seat assembly and are secured with
lockwashers and double nuts.
b. Axle. The tubular axle has six adapters
and
two
flanges
Adapters
provide
seating
sur-
welded to its external surface.
faces for spring guide brackets, torque rod brackets, and torque
rod bracket mounting brackets. Flanges are provided for mount-
ing brake backing plates to the axle.
c. Torque Rods. Two torque rods are attached beneath each
The torque rods be-
axle and one is attached above each axle.
neath each axle are attached at one end to brackets attached
to the axle and at the other end to brackets extending from the
tube, with brackets, assembly (trunnion cross tube). The torque
rod above each axle is attached at one end to brackets attached
to the axle and at the other end to a bracket riveted to the
Each torque rod is re-
chassis frame left longitudinal beam.
tained in its brackets by two slotted hex nuts and cotter pins.
d. Tube, with Brackets, Assembly (Trunnion Cross Tube).
The tube,with brackets, assembly is attached to brackets welded
to the longitudinal beams of the chassis frame at a point mid-
A spring
way between the forward-rear and rear-rear axle.
s e a t on each end of the tube, with brackets, assembly is mounted
on roller bearing similar to those on the hubs of the wheels.
10.
Brakes
a . General.
When
the
brake
system
of
the
semitrailer
is
TACO 1321B
18
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