TM 1-1520-238-23
6-489
6.117.
MAIN TRANSMISSION INPUT DRIVE HOUSING REMOVAL/INSTALLATION
6.117.1. Description
This task covers:
Removal. Cleaning. Inspection. Installation.
6.117.2. 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)
Chemical protective gloves (item 154, App H)
30 - 150 inch-pound 3/8-inch drive click type torque
wrench (item 441, App H)
Materials/Parts:
Packing
Petrolatum (item 138, App F)
Personnel Required:
68D
Aircraft Powertrain Repairer/NDI
67R3F
Attack Helicopter Repairer/Technical
Inspector
Equipment Conditions:
Ref
Condition
1.57
Helicopter safed
2.2
Access panels L200 and/or R200 removed
2.123
Engine nose gearbox fairings and shrouds
removed
6.115
Main transmission input drive clutch re-
moved
WARNING
FLIGHT SAFETY PART
The main transmission 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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