ROTARY-WING HEAD RETAINING NUT TORQUE CHECK (Continued)
Rotary-wing blades can seriously
injure personnel. Make sure area
around helicopter is clear of personnel
before moving blades.
To prevent dropping and damaging
rotor head, use two men when
installing reaction adapter.
The retaining nut torque must be
checked following the first flight after
rotary-wing head installation.
Procedure is same for forward or aft
Check cockpit controls to ensure thrust control
is in the ground detent position.
Remove nine screws (1) and washers (2).
Remove retainer (3), cover (4) and packing (5).
Remove retaining ring (6) and tang washer (7).
Use grease pencil to mark a line on
nut (9) and socket (8).
Position socket (T29) (8) on hub retaining nut (9).
For forward head, install adapter with
marking FWD ROTOR THIS SIDE UP
on top. For aft head, install adapter
with marking AFT ROTOR THIS SIDE
UP on top.