TM 1-1520-238-23
5-78.6
Change 6
5.14A.
MAIN ROTOR BLADE FORWARD AND AFT TIP WEIGHT REMOVAL/INSTALLATION
(AVIM) – continued
CAUTION
The same total weight, stack height,
and arrangement of weights that were
removed must be reinstalled on the
blade unless the weight stack is ad-
justed using an AMCOM approved
blade static balance tool and proce-
dures. Failure to do so could result in
excess vibration causing damage to
the aircraft.
The Maximum permissible weight that
may be mounted on each weight sup-
port fitting is 5.0 POUNDS.
c. Install forward tip weights (7) on support fit-
ting (1). Torque nuts (8).
(1) Install forward counterbalance weights (7) on
support fitting (1) in the exact order, height
and weight as removed.
(2) Apply antiseize compound (item 26, App F) to
studs (10).
(3) Install two washers (9) and nuts (8) on sup-
port fitting (1).
(4) Torque two nuts (8) to 275 INCHPOUNDS.
Use torque wrench.
d. Install the forward weight support fitting (1)
on blade (2). Torque nuts (3).
(1) Install the forward weight support fitting (1) on
blade (2).
(2) Install two washers (4), one washer (5) and
three nuts (3) on forward studs (6).
(3) Torque three nuts (3) to 175 INCH-POUNDS.
Use torque wrench.
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