TM 1-1520-238-23
Change 4
4-179
SECTION II.
COOLING SYSTEM MAINTENANCE
4.57.
NO. 1 AND NO. 2 ENGINE LOUVER ACTUATOR REMOVAL/INSTALLATION
4.57.1. Description
This task covers:
Removal. Cleaning. Inspection. Installation. Adjustment.
4.57.2. Initial Setup
Tools:
Aircraft mechanic’s tool kit (item 376, App H)
Light duty laboratory apron (item 27, App H)
Industrial faceshield (item 129, App H)
Chemical protective gloves (item 154, App H)
Aircraft power unit (item 232, App H)
0 - 75 inch-pound 1/4-inch drive dial indicator torque
wrench (item 446, App H)
Materials/Parts:
Cotter pin
Packing
Petrolatum (item 138, 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
NOTE
This task is typical for No. 1 and No. 2
engine louver actuator.
4.57.3. Removal
a. Enter pilot station (para 1.56). Observe all
safety precautions.
b. On pilot forward circuit breaker panel, open
ENG LVR circuit breaker.
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M04-1023-1
