TM 1-1520-238-23
Change 4
6-331
6.76.
MAIN TRANSMISSION TAIL ROTOR FLANGE CORK STOPPER REPLACEMENT
6.76.1. Description
This task covers:
Removal. Cleaning. Inspection. Installation.
6.76.2. Initial Setup
Tools:
Aircraft maintenance tool kit (item 372, App H)
Light duty laboratory apron (item 27, App H)
0.000 - 6.000-inch outside micrometer caliper set
(item 52, App H)
7/8 x 7 3/4-inch long brass driftpin (item 114, App H)
0.000 - 0.125-inch dial indicator depth gage (item 145,
App H)
Chemical protective gloves (item 154, App H)
Rawhide mallet (item 212, App H)
Adjustable air filtering respirator (item 262, App H)
Materials/Parts:
Cloth (item 51, App F)
Methyl ethyl ketone (item 124, App F)
Sealing compound (item 177, App F)
Personnel Required:
68D
Aircraft Powertrain Repairer/NDI
67R3F
Attack Helicopter Repairer/Technical
Inspector
Equipment Conditions:
Ref
Condition
6.75
Main transmission tail rotor drive flange re-
moved
WARNING
FLIGHT SAFETY PART
The main transmission tail rotor flange assembly 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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