TM 55-1520-240-23-4
5-9
INSTALL ROTARY-WING HEAD
(Continued)
5-9
Torque must be applied to hub nut as
described. Wrong torque can result in
loss of helicopter and loss of life.
Do not use power tools to turn torque
applicator. Applicator could be
severely damaged.
NOTE
Gage on torque applicator (T2) is
direct reading and shows actual
torque applied to nut. Allowable torque
range for tang washer alignment is
5500 to 6000 foot-pounds. No nut
stabilization of any amount of time is
required.
21.
Have helper turn handle (T161) (32) clockwise.
Observe gage (33) on torque applicator (T2)
(31). Turn handle until gage indicates 5500
foot-pounds. Apply torque slowly as gage
reading approaches 5500 foot-pounds.
5-64
