TM 1-1520-238-23
13-7
13.3.
ENVIRONMENTAL CONTROL UNIT (ENCU) REMOVAL/INSTALLATION
13.3.1. Description
This task covers:
Removal. Cleaning. Inspection. Installation.
13.3.2. 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)
30 - 150 inch-pound 1/4-inch drive click type torque
wrench (item 435, App H)
Materials/Parts:
Packing
Petrolatum (item 138, App F)
Sealing compound (item 174, App F)
Strap (item 192, App F)
Tape (item 200, App F)
Personnel Required:
67R
Attack Helicopter Repairer
67R3F
Attack Helicopter Repairer/Technical
Inspector
References:
TM 1-1520-238-T
Equipment Conditions:
Ref
Condition
1.57
Helicopter safed
2.2
Access doors T250L, T250R, T290L,
T290R, and L325 opened
CAUTION
To prevent damage to fire bottle squibs,
caution must be used during ENCU re-
moval/installation.
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M04-719-2
