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 TM 55-1905-221-14-1
4-27. RAMP HOISTING ASSEMBLY (Continued).
LOCATION/ITEM
ACTION
REMARKS
SERVICE (Cont)
c.
Slowly open control valve (3)
to fully open position and
check reading on test gage.
It should be no greater than
2,000 psi (13,790 kPa).
d. Adjust pressure, if necessary,
by rotating adjusting screw
(4) on relief valve. Turn
screw clockwise to increase
pressure; counterclockwise to
decrease pressure.
e. Close shutoff valve at test
gage to prevent rapid and
sudden pressure charges from
damaging gage.
f.
Using a clean cloth and
detergent and water solution,
remove all foreign matter
from exterior of relief
valve.
4-95
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