TM 55-1520-240-23-8
10-117
PRESSURE TEST VENT SYSTEM
10-117
INITIAL SETUP
Applicable Configurations:
All
Tools:
Aircraft Mechanic’s Tool Kit, NSN 5180-00-323-4692
Stopwatch
Valve, Shutoff
Valve, Vent
Torque Wrench, 700 to 1600 Inch-Pounds
Gage, 60 psi
Nitrogen Supply With Regulator
Test Plug (E55)
Materials:
Soap (E353)
Brush (E85)
Conical Flared Seals VSF1015A16B
Personnel Required:
Medium Helicopter Repairer
Inspector
References:
TM 55-1520-240-23P
Equipment Condition:
Battery Disconnected (Task 1-39)
Electrical Power Off
Helicopter Grounded (Task 1-29)
Affected Side of Helicopter Defueled (Task 10-34 or
10-35)
Tank Forward Access Door Removed (Task 10-51 for
Main Tank or 10-79 for Aft Tank)
Forward Tank Aft Access Door Removed (Task 10-24)
General Safety Instructions:
All regulations and instructions
for handling fuels shall be strictly
observed.
Do not allow elbows or nipples to turn
when disconnecting fuel hoses from
aft access panel. Otherwise, access
panel fittings can fail and cause
blockage.
10-499
