Quantcast Figure 42. Minor adjustment of brakes-semitrailers M270 and M269.

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Rotate each shaft in direction of for-
end  wrench
ward  wheel  rotation  to  decrease  brake  lining  clear-
Check
drag
on
ance
until
lining
drags
on
drum.
drum by rotating wheel in forward direction of ro-
Make a brake application to be certain shoes
tation.
Readjust if required.
are centered.
(c)
Relieve
drag
on
drum
by
rotating  each  adjusting
Then rotate shaft one
shaft
in
opposite
direction.
complete turn (two complete turns with a new lin-
ing)
to
provide
correct
lining
clearance.
(d)
Adjust both shoes in each brake of semitrailer to
as
near
same
lining-to-drum
clearance
as
possible.
c. Semitrailers M270 and M269.
Minor
adjustment
of
brakes
can
(1) M i n o r
adjustment.
be
performed
without
removing
wheels
from
hubs.
(a)
Release brakes of towing vehicle. Jack up axle on
semitrailer
so
that
wheels
may
be
rotated
freely.
With
a
wrench,
depress
spring
lock
on
adjusting
(b)
worm
shaft
42)
of
brake
slack
adjuster
and
turn worm shaft until wheel or brake drum cannot
be
turned
freely
by
hand.
Back
off
on
shaft
just
enough so wheel or drum can be turned freely by
After
completing
adjustment,
make
certain
hand.
Figure 42. Minor adjustment of brakes-semitrailers M270 and M269.
TAGO 1321B
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