TM 1-1520-238-23
4-340
Change 4
4.105.
NO. 1 AND NO. 2 ENGINE GEARBOX DRAIN HOSE REMOVAL/INSTALLATION
4.105.1. Description
This task covers:
Removal. Cleaning. Inspection. Installation.
4.105.2. Initial Setup
Tools:
Aircraft mechanic’s 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, LN3, and LN4 or RN1,
RN3, and RN4 opened
NOTE
This is typical for No. 1 or No. 2 engine
gearbox drain hose.
4.105.3. Removal
a. Remove wire harness support clamp (1) from
hydromechanical unit (HMU) drain hose (2).
(1) Hold screw (3). Remove nut (4) and washer
(5).
(2) Remove screw (3) from clamps (1) and (6).
(3) Remove clamp (1).
b. Remove wire harness support clamp (7) from
hose (2).
(1) Hold screw (8). Remove nut (9) and washer
(10).
(2) Remove screw (8) from clamp (7), spacer
(11), and clamp (12).
(3) Remove clamp (7).
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M04-2550-1A
M04-2550-5
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