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The weight of the semitrailer and load is carried on two opposed
tapAered roller bearings in each hub. The bearing C ups are a
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.
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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