TM 55-1520-240-23-4
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PRESSURE TEST ROTARY-WING HEAD SEALS AND PACKINGS
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INITIAL SETUP
Applicable Configurations:
All
Tools:
Powertrain Repairer’s Tool Kit, NSN
5180-00-003-5267
Pump, Manual Inflating
Dial Indicating Pressure Gage, 0 to 30 Psi
Air Hose, 4 Feet Long (APP E-4)
Stopwatch
Torque Wrench, 5 to 50 Inch-Pounds
Torque Wrench, 30 to 150 Inch-Pounds
Pressurizing Fitting (APP E-4)
Materials:
Lockwire (E231)
Parts:
Packings
Personnel Required:
Aircraft Powertrain Repairer (2)
Inspector
References:
TM 55-1520-240-23P
Appendix E
Equipment Condition:
Battery Disconnected (Task 1-39)
Electrical Power Off
Hydraulic Power Off
One Forward and One Aft Rotary-Wing Blade
Tied-Down (Task 1-26)
Work Platform Open (Task 2-2)
Pressure Test Setup
General Safety Instructions:
Release pressure at fittings carefully;
otherwise, lubricating oil can spray
out. Lubricating oil can be harmful to
nose, eyes, or mouth.
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