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 Air
filter-installed
view.
frame by alining U-bolt seat of filter with holes in cross mem-
ber.
Place U-bolt over filter and through holes in cross mem-
ber. Install two -inch lockwashers and -inch hex nuts on
U-bolt and tighten. Draw air line ends to openings on filter
and tighten tube connectors.
60. Emergency Relay Valve
a.
of
Moisture
from
Emergency
Valve.
To
drain accumulated moisture, remove drain plug (fig. 13). In-
stall plug after draining.
b. Operating Tests.
(1)
With
air
brake
system
of
semitrailer
connected
(par.
31b(3)), apply brakes and check to be sure that brakes
of all semitrailer wheels apply properly.
Release brakes and check to be sure air pressure is
(2)
exhausted
promptly
through
check
valve.
(3)
With
brake
system
fully
charged,
close
shutoff
cock
in emergency line on towing vehicle and disconnect
air
hose
coupling
10)
tagged
EMERGENCY.
Check to be sure semitrailer brakes apply automatically.
Connect air hose coupling tagged EMERGENCY, open
(4)
shutoff cock on towing vehicle, and check to be sure
brakes
release
automatically.
TAGO 1321B
96
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