TM 1-1520-238-23
6-556
Change 4
6.135.
TAIL ROTOR GEARBOX INPUT GEAR SEAL ASSEMBLY REMOVAL/INSTALLATION
6.135.1. Description
This task covers:
Removal. Cleaning. Inspection. Installation.
6.135.2. Initial Setup
Tools:
Aircraft maintenance tool kit (item 372, App H)
Light duty laboratory apron (item 27, App H)
Industrial faceshield (item 129, App H)
0.002 - 0.040-inch gap setting gage (item 147, App H)
0.0015 - 0.0250-inch thickness gage (item 152, App H)
Chemical protective gloves (item 154, App H)
Adjustable air filtering respirator (item 262, App H)
Jackscrew set (item 281, App H)
30 - 150 inch-pound 3/8-inch drive click type torque
wrench (item 441, App H)
Materials/Parts:
Packing (3)
Self-locking nut (6)
Spacer
Assembly fluid (item 30, App F)
Cloth (item 52, App F)
Lubricating oil (item 119, App F)
Sealing compound (item 177, App F)
Personnel Required:
68D
Aircraft Powertrain Repairer/NDI
67R3F
Attack Helicopter Repairer/Technical
Inspector
References:
TM 1-1500-204-23
Equipment Conditions:
Ref
Condition
6.133
Tail rotor gearbox shoulder shaft removed
WARNING
FLIGHT SAFETY PART
The tail rotor gearbox is a flight safety
part. Failure to follow maintenance
instructions may result in serious
injury or death of crewmembers
and/or serious damage to the
helicopter.
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