TM 1-1520-238-23
10-509
10.122.
NITROGEN INERT VENT VALVE REMOVAL/INSTALLATION
10.122.1. Description
This task covers:
Removal. Cleaning. Inspection. Installation.
10.122.2. Initial Setup
Tools:
Aircraft mechanic’s tool kit (item 376, App H)
Light duty laboratory apron (item 27, App H)
Chemical protective gloves (item 154, App H)
Adjustable air filtering respirator (item 262, App H)
4-inch machinist’s vise (item 402, App H)
30 - 150 inch-pound 3/8-inch drive click type torque
wrench (item 441, App H)
Materials/Parts:
Packing (2)
Petrolatum (item 138, App F)
Personnel Required:
67R
Attack Helicopter Repairer
67R3F
Attack Helicopter Repairer/Technical
Inspector
References:
TM 1-1520-238-T
TM 9-1090-208-23
Equipment Conditions:
Ref
Condition
1.57
Helicopter safed
10.2
Fuel system safety precau-
tions observed
1.19
Helicopter defueled, SPA
method
2.2
Access panel R200 re-
moved
TM 9-1090-208-23
Ammunition storage maga-
zine removed
10.122.3. Removal
a. Enter pilot station (para 1.56). Observe all
safety precautions.
b. On center circuit breaker panel, open ENG
INST, FUEL XFEED, and FUEL XFER circuit
breakers.
c. In upper right corner of utility receptacle cir-
cuit breaker panel in main rotor transmission
compartment R200, open NITROGEN INERT
circuit breaker.
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M04-2975-1
