TM 1-1520-238-23
Change 8
6-599
6.145.
TAIL ROTOR GEARBOX REMOVAL/INSTALLATION – continued
6.145.6. Installation
a. Install gearbox (2) on stabilizer (9). Torque four
nuts (12) to 655 INCH-POUNDS.
(1) Remove gearbox (2) from fixture. Use
adapter kit and sling.
(2) Position gearbox (2) on studs (14).
(3) Lightly coat four washers (13) with sealing
compound.
Use
sealing
compound
(item 177, App F).
(4) Install four washers (13) and four new self
locking nuts (12) on studs (14).
(5) Torque four nuts (12) to 655 INCH-POUNDS.
Use torque wrench and torque wrench
adapter.
(6) Apply sealing compound to heads of four
studs (14) washers (13), and nuts (12). Use
sealing compound (item 178, App F).
(7) Fill gaps and coat exposed faying surfaces
around gearbox (2). Use sealing compound
(item 178, App F).
(8) Remove sling (11) and eye bolt (10).
b. Inspect (QA).
c. Install two clamps (5) on clamp supports (6).
(1) Install two screws (7) through washers (8),
clamps (5), and clamp supports (6).
d. Install bracket (1) on gearbox (2).
(1) Install two washers (4) and nuts (3).
e. Inspect (QA).
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14
13
12
M04-564-4B
2
11
10
9
M04-564-12A
7
5
8
6
5
5
M04-564-10
1
4
3
2
