TM 1-1520-238-23
5-96
Change 3
5.19.
MAIN ROTOR HUB RETENTION NUT REMOVAL
5.19.1. Description
This task covers:
Removal. Cleaning. Inspection. Repair.
5.19.2. Initial Setup
Tools:
Aircraft mechanic’s tool kit (item 376, 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)
0 - 600 inch-pound 3/8-inch drive dial indicator torque
wrench (item 447, App H)
Materials/Parts:
Corrosion preventive compound (item 63, App F)
Epoxy primer coating kit (item 78, App F)
Mat (item 122, App F)
Methyl ethyl ketone (item 124, App F)
Personnel Required:
67R
Attack Helicopter Repairer
67R3F
Attack Helicopter Repairer/Technical
Inspector
Equipment Conditions:
Ref
Condition
1.57
Helicopter safed
5.3
Main rotor blades removed
6.96
Main rotor drive plate removed
11.14
Main rotor blade pitch links removed
WARNING
FLIGHT SAFETY PART
The main rotor hub retention nut 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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