TM 1-1520-238-23
Change 4
6-437
6.99.
MAIN ROTOR MAST MOUNTING BOLT REPLACEMENT (AVIM)
6.99.1. Description
This task covers:
Removal. Cleaning. Inspection. Installation.
6.99.2. Initial Setup
Tools:
Aircraft maintenance tool kit (item 372, App H)
Light duty laboratory apron (item 27, App H)
Chemical protective gloves (item 154, App H)
Adjustable air filtering respirator (item 262, App H)
Materials/Parts:
Lubricant (item 114, App F)
Sealing compound (item 177, App F)
Wire (item 224, App F)
Personnel Required:
68D
Aircraft Powertrain Repairer/NDI
67R3F
Attack Helicopter Repairer/Technical
Inspector
Equipment Conditions:
Ref
Condition
6.100
Mast base oil retainer removed
WARNING
FLIGHT SAFETY PART
The main transmission is a flight safe-
ty 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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M04-3251-1
