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 Section VII. BRAKES
56.
Brake
Adjustments
a. General. Brake adjustment to compensate for normal wear
is
termed
"minor
adjustment."
Following
a
rebuild
or
when
new linings are installed, each brake shoe must be adjusted
to center brake shoe arc in relation to the brake drum. This
is called "major adjustment. "
Note. Always check wheel bearing adjustment (par. 53c(2)) before ad-
justing brakes. A satisfactory brake adjustment cannot be obtained unless
wheel healings are in proper adjustment. Do not adjust brakcs when drums
are hot.
Two
adjusting
shafts
protrudc
from
back
(1) G e n e r a l .
of brake spider and dust shield inclosure of the brake
Each shaft provides the lining clearance
assembly.
adjustment for one brake shoe.
(2) B r a k e l i n i n g c l e a r a n c e a d j u s t m e n t .
(a) Release
brakes
on
towing
vehicle.
Jack
up
axle
on semitrailer so that wheels may be rotated freely.
(b) Engage each adjusting shaft with a 3/8-inch hex or
TAGO 1321B
90
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