TM 1-1520-238-23
5-200
5.45.
MAIN ROTOR UPPER SEAL RETAINER AND PLAIN ENCASED SEAL
REMOVAL/INSTALLATION – continued
5.45.3. Removal
a. Remove upper seal removal tool (1) from con-
tainer (2). Use seal removal/installation kit.
(1) Remove packing (3) and upper support shelf
(4).
(2) Remove nut (5) from center bolt (6).
(3) Remove four support dowels (7).
(4) Remove phenolic installation ring (8) and re-
moval plate (9).
(5) Remove puller support (10).
b. Install upper seal removal tool (1) on main
rotor head (11). Use maintenance platform.
(1) Remove four detent pins (12) from puller sup-
port (10) allowing puller shoes (13) to move
freely.
(2) Move four detent pins (12) over puller support
(10).
(3) Fold puller shoes (13) toward center of head
(11) and position puller support (10) on head
(11).
(4) Fold puller shoes (13) out to engage retainer/
seal (14).
(5) Install four detent pins (12) into puller support
(10) and puller shoe (13).
(6) Install four dowels (7) evenly around head
(11).
(7) Install plate (9) on center bolt (6) and four
dowels (7).
(8) Adjust dowels (7) as necessary.
(9) Install nut (5) on center bolt (6).
c. Tighten nut (5) until retainer/seal (14) is re-
moved from the head (11).
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