TM 1-1520-238-23
Change 3
5-243
5.54.
TAIL ROTOR BLADE INSTALLATION – continued
b. Install dust cap (1) on tail rotor hub (2) with
flared end of cap (1) facing tail rotor blade (3).
Use maintenance platform.
c. Install blade (3) on hub (2).
(1) Install blade (3) on hub (2) with bolt holes in
blade and hub alined.
(2) Install two bushings (4) in bolt holes of blade
(3).
d. Thoroughly clean bolt (5), new preload indi-
cating PLI washer (6), and new nut (11) before
installation (para 1.47).
e. Install bolt (5) through two bushings (4) and
blade (3).
f. Install PLI washer (6), in proper sequence, on
bolt (5).
(1) Install washer (7), inner washer (8), outer
washer (9), and washer (10).
NOTE
Before installing nut check threads on
bolt for the possibility of nut shanking.
Use 0.279 INCH as thickness of loaded
PLI washer. One washer may be installed
under bolt head.
(2) Install nut (11) and run nut (11) on bolt (5) until
contact is made with PLI washer (6).
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M04-258-2
2
1
4
3
4
BOLT HOLE
BOLT HOLE
M04-258-3
5
3
7
8
9
10
11
6
4
