Quantcast Section VII. BRAKES

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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.
b. Semitrailer M270A1 (fig. 41).
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.
Figure 41. Brake adjusting shaft-semitrailer M270A1.
(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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