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 The weight of the semitrailer and load is carried on two opposed
The bearing cones and roller assem-
pressed fit in the hubs.
blies arc removable for cleaning, inspection, and lubrication.
An adjusting nut with pin, a
The bearings are adjustable.
locking washer with holes to accommodate the pin of' the ad-
justing nut, and a jamnut secure the hub with bearings on
the spindle. A grease seal and wiper. are fitted on the spindle,
back of the inner bearing, to protect the brake linings from
lubricant.
B. Brake Drums.
The
brake
drum
is
attached
to
(1) S e m i t r a i l e r
M270A1.
the
hub
through
a
dished
brake
drum
adapter.
The
adapter is secured to the hub by 10 wheel studs and
to
the
drum
by
l0
bolts,
7/16-inch
and
.to the drum by 10 bolts, 7/16-inch lockwashers, and 7/16-
inch hex nuts. One of these bolts with lockwasher and
The inspection hole permits the brake lining clearance
A hub cap and gasket, fastened by
to be checked.
TAGO 1321B
31
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