TM 1-1520-238-23
4-343
4.106.
NO. 1 ENGINE OVERSPEED DRAIN VALVE HOSE REMOVAL/INSTALLATION
4.106.1. Description
This task covers:
Removal. Cleaning. Inspection. Installation.
4.106.2. Initial Setup
Tools:
Aircraft mechanics tool kit (item 376, App H)
9/16 x 1/4-inch drive open end box socket wrench
crowfoot attachment (item 85, App H)
30 - 150 inch-pound 1/4-inch drive click type torque
wrench (item 435, App H)
0 - 75 inch-pound 1/4-inch drive dial indicator torque
wrench (item 446, App H)
Personnel Required:
67R
Attack Helicopter Repairer
67R3F
Attack Helicopter Repairer/Technical
Inspector
Equipment Conditions:
Ref
Condition
1.57
Helicopter safed
2.2
Access doors LN1 and LN3 opened
4.106.3. Removal
a. Remove overspeed drain valve hose (1) from
fitting (2).
(1) Hold fitting (2). Remove nut (3).
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M04-2551-1
M04-2551-2
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