TM 1-1520-238-23
Change 4
6-563
6.135.
TAIL ROTOR GEARBOX INPUT GEAR SEAL ASSEMBLY REMOVAL/INSTALLATION – continued
CAUTION
Do not move retainer axially away from
gearbox housing before securing, as seal
leakage may result and seal must be
completely removed from retainer and re-
installed.
d. Install retainer (1) on gearbox (2). Torque six
nuts (3) to 60 INCH-POUNDS.
(1) Position retainer (1) on studs (5) and spacer
(16).
(2) Install six spacers or washers (4) and new
nuts (3) on studs (5).
(3) Torque six nuts (3) to 60 INCH-POUNDS.
Use torque wrench.
(4) Install two nylon setscrews (6) in retainer (1).
e. Inspect (QA).
f. Apply sealing compound to nylon setscrews
(6). Use sealing compound (item 177, App F).
g. Apply bead of sealing compound to joint be-
tween gearbox (2) and retainer (1). Use sealing
compound (item 177, App F).
h. Apply sealing compound to studs (5), nuts (3)
and washers (4). Use sealing compound
(item 177, App F).
i. Inspect (QA).
j. Install tail rotor gearbox shouldered shaft
(para 6.133).
END OF TASK
M04-559-9
16
2
5
4
3
1
6
