TM 55-1520-240-23-4
5-64
REMOVE ROTARY-WING BLADE (Continued)
5-64
CAUTION
Lower vertical pin nut must be
removed before upper nut. Removing
upper nut first can damage pin or
inner liners.
9.
Remove lower vertical pin nut (23) as follows:
a.
Position pilot socket (24) on drive bar (25).
Position drive bar through vertical pin (26).
Have helper support drive bar.
b.
Install torque wrench (T48) (27) on drive bar
(25). Turn handle (28) in either direction until
wrench is seated on pilot socket (24).
c.
Install upper washer (29) and nut (30) on
drive bar (25). Have helper release bar.
d.
Install spanner socket (31) on drive bar (25)
and engage with lower pin nut (23). Install
lower washer (29) and nut (30).
e.
Adjust upper and lower nuts (30) until drive
bar (25) is seated in spanner socket (31).
CAUTION
Torque wrench must not turn during
removal of lower nut. Equipment can
be damaged.
f.
Turn handle (28) clockwise to remove lower
nut (23).
g.
Remove lower nut (30), washer (29), spanner
socket (31), and lower pin nut (23).
Change 2
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