TM 55-1520-240-23-4
5-5
PRESSURE TEST ROTARY-WING HEAD SEALS AND PACKINGS
(Continued)
5-5
5.
Loosen pressurizing fitting (5) just enough to
bleed pressure. When gage pressure reads 0
psi, remove fitting and packing (4).
6.
Install packing (4) and plug (3). Torque plug to
85 inch-pounds. Lockwire plug. Use lockwire
(E231).
INSPECT
TEST PITCH-VARYING HOUSING OIL SEALS AND
PACKINGS
7.
Check oil level in sight indicator (10). Service oil
tank (11) if needed (Task 1-57).
8.
Remove filler plug (12) and packing (13). Install
pressurizing fitting (14) and packing in tank (11).
Connect test setup (6) to pressurizing fitting.
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