TM 1-1520-238-23
6-596
Change 2
6.145.
TAIL ROTOR GEARBOX REMOVAL/INSTALLATION
6.145.1. Description
This task covers:
Removal. Cleaning. Inspection. Installation.
6.145.2. Initial Setup
Tools:
Aircraft maintenance tool kit (item 372, App H)
5/8 x 3/8-inch drive box end torque wrench adapter
(item 14, App H)
Airframe adapter kit (item 25, App H)
Light duty laboratory apron (item 27, App H)
Eye bolt (item 39, App H) (p/o item 194, App H)
0.000 - 0.125-inch dial indicator depth gage (item 145,
App H)
Chemical protective gloves (item 154, App H)
Adjustable air filtering respirator (item 262, App H)
Rotor universal sling (item 292, App H)
150 - 750 inch-pound 3/8-inch drive click type torque
wrench (item 442, App H)
Materials/Parts:
Sealing compound (item 177, App F)
Sealing compound (item 178, App F)
Personnel Required:
68D
Aircraft Powertrain Repairer/NDI
One person to assist
67R3F
Attack Helicopter Repairer/Technical
Inspector
References:
TM 1-1520-238-T
Equipment Conditions:
Ref
Condition
1.57
Helicopter safed
11.266
Tail rotor connecting link removed
11.262
Tail rotor swashplate removed
11.261
Directional servocylinder support and sup-
port bracket removed
11.253
Tail rotor control bracket removed
11.269
Directional F.S. 520 push-pull rod removed
6.133
Tail rotor gearbox shouldered shaft removed
6.139
Tail rotor gearbox accelerometer removed
6.142
Tail rotor gearbox forward strut removed
from gearbox
6.140
Tail rotor gearbox aft strut removed
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