TM 55-1520-240-23-8
10-3
PURGING OF FUEL TANK WITH AIR
10-3
INITIAL SETUP
Applicable Configurations:
All
Tools:
Aircraft Mechanic’s Tool Kit, NSN 5180-00-323-4692
Air Supply, 80 to 120 Lbs. Per Sq. In.
Lamb Air Remover (T-200)
Combustible Gas Indicator (T-219)
Grounded Air Blower (or Equivalent)
Materials:
Tape (E388)
Personnel Required:
Medium Helicopter Repairer
References:
Task 2-2
Task 10-51
Task 10-53
Task 10-69
Task 10-79
Equipment Condition:
Battery Disconnected (Task 1-39)
Electrical Power Off
Helicopter Grounded (Task 1-29)
Fuel Tank Defueled (Task 10-34 or 10-35)
Two Tank Drain Valves Removed (Task 10-39)
General Safety Instructions:
All regulations and instructions
on handling fuels shall be strictly
observed.
NOTE
Air purging forces fresh air into the
defueled tank to replace fuel vapors.
Procedure is same to purge any fuel
tank. No. 1 (left) main fuel tank
purging is shown here.
1.
Connect air supply hose (1) to air mover (2).
2.
Open air supply valve (3) slowly.
3.
Allow air supply to flow to clear hose (1) and air
mover (2).
4.
Close air supply valve (3).
10-27
