TM 55-1520-240-23-5
6-62
INSTALL AFT ROTOR SHAFT THROUGH TOP OF PYLON
(Continued)
6-62
Be careful when handling seal. Seal
is easy to damage.
7.
Install seal retainer (15) on bottom of shaft (2).
8.
Coat splines (18) with oil (E254).
9.
Lower shaft (2) through pylon (11) and structure
(19). Align shaft splines (18) with transmission
splines (20).
10.
Turn bearing support (6) so that chip detector
(21) and union (22) point forward. Align four
mounting holes (23) in support with holes (24)
in structure (19).
11.
Align tab (25) on retainer (15) with slot (26) on
bearing outer race (27). Align retainer with ten
studs (28) on transmission (12).
12.
Lower shaft (2) into transmission (12) until
retainer (15) is seated on top of transmission.
Install ten washers (29) and nuts (30) on studs
(28). Torque nuts to 60 inch-pounds.
13.
Coat thread of four mounting bolts (31) with oil
(E254). Install countersunk washer (32) on each
bolt, with countersink against bolt head.
NOTE
Refer to Task 1-13, step 8, for re-use
of self-locking nuts.
14.
Install four bolts (31), from bottom, through
structure (19) and bearing support (6). Install
four washers (33) and nuts (34). When nuts are
installed at least three turns, release tension on
hook (4).
15.
Torque four nuts (34) to 375 foot-pounds.
Check each bolt (31). Bolts shall extend 0.08 to
0.20 inch through nuts (34). Use washers (33) of
different thicknesses, as needed.
6-241
