TM 55-1520-240-23-4
5-64
REMOVE ROTARY-WING BLADE (Continued)
5-64
10.
Remove upper vertical pin nut (32) as follows:
a.
Have helper support drive bar (25). Remove
nut (30) and washer (29).
b.
Remove torque wrench (T48) (27).
c.
Install spanner socket (31) on drive bar (25),
over pilot socket (24). Seat spanner socket
on upper nut (32).
NOTE
Pilot socket can be pushed out of
vertical pin notches.
d.
Have helper raise drive bar (25) slightly. Have
him rotate bar until flats on bar seat in pilot
socket (24). Continue to support bar.
e.
Install torque wrench (T48) (27) on drive bar
(25). Turn handle (28), in either direction, until
wrench is seated on spanner socket (31).
f.
Install washer (29) and nut (30) on drive bar
(25). Have helper release bar.
CAUTION
Do not restrain torque wrench from
turning as upper pin nut is removed.
Holding wrench will cause pin to turn
and score pin or inner liners.
g.
Turn handle (28) clockwise to remove upper
nut (32).
h.
Have helper support drive bar (25).
i.
Remove nut (30), washer (29), torque wrench
(T48) (27), spanner socket (31), pilot socket
(24), drive bar (25), and upper pin nut (32).
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Change 2
