TM 55-1520-240-23-3
4-159
LEAK TEST FADEC P3 SIGNAL LINE
4-159
INITIAL SETUP
Applicable Configurations:
With 74
Tools:
Aircraft Mechanic’s Tool Kit, NSN 5180-00-323-4692
Fuel Resistant Container, 1 Gallon Minimum
144 Inch Hose Assembly Compatible with the Chosen
Air Source and Having a 1/4 Inch Male Flared
End Fitting Compatible with the Engine Hose
Connection
Gauge, 0 to 150 Psi
Face Shield
Materials:
Cloths (E121)
Gloves (E184.1)
Soap (E351)
Air Source, Regulated, 0 to 100 Psi
Nitrogen (E248)
Personnel Required:
Medium Helicopter Repairer (2)
Inspector
References:
TM 55-1520-240-23P
Equipment Condition:
Battery Disconnected (Task 1-39)
Electrical Power Off
Hydraulic Power Off
Cabin Acoustic Blankets Removed As Required
Test Setup Assembled (If Required)
Engine Work Platform Open (Task 2-2)
Engine Access Cover Open (Task 4-49)
General Safety Instructions:
During high pressure operations,
care must be taken to ensure that
all connections and fittings are
properly and tightly secured prior
to applying pressure. All system
components must be compatible
with pressure applied. Personnel
must be protected at a distance
sufficient to prevent injury. Perform
high pressure pneumatic operations
in a well-ventilated, protected area.
Although nitrogen (E248) is not toxic,
exposure to large quantities can
cause suffocation. Use only in a
well-ventilated area.
Eye protection will be worn when
using air or gas pressurized above
30 psi.
4-517
