TM 55-1520-240-23-9
11-139
INSTALL YAW, THRUST, ROLL OR PITCH VISCOUS DAMPER ARMS
(Continued)
11-139
Epoxy primer (E292) is flammable
and toxic. It can irritate skin and
cause burns. Use only with adequate
ventilation, away from heat and
open flame. Avoid contact with skin,
eyes, or clothing. In case of contact,
immediately flush skin or eyes with
water for at least 15 minutes. Get
medical attention for eyes.
5.
Apply coat of epoxy primer (E292) to setscrew
(6). Wear gloves (E184.1). Use goggles to
protect eyes. Install setscrew in plate (3) of arm
(1) while epoxy primer is wet.
Sealant (E327) can irritate skin and
cause burns. Avoid contact with skin,
eyes, and clothing. In case of contact,
immediately flush skin or eyes with
water for at least 15 minutes. Get
medical attention for eyes.
6.
Apply coat of sealant (E327) on setscrew (6).
Use goggles to protect eyes. Wear gloves
(E184.1).
INSPECT
Bushings must be in link before
installing bolt; otherwise, damage to
component will result.
NOTE
Impedance bolts are installed in flight
control connections. These bolts are
self-retaining and require a special
nut and torque (Task 1-13).
7.
Remove nut (9), two washers (10 and 11), and
bolt (12) from link (13).
8.
Position arm (1) in link (13). Install bolt (12), two
washers (11 and 10) and nut (9) in link and arm.
9.
Torque nut (9) to 15 to 25 inch-pounds. Install
cotter pin (14).
10.
Check bolt (12). Bolt shall not rotate with torque
less than 10 inch-pounds. There shall be no
axial looseness, if bolt rotates or is loose, add
washer under nut and repeat step 9.
INSPECT
FOLLOW-ON MAINTENANCE:
Perform yaw, thrust, roll, or pitch control operational
check (TM 55-1520-240-T).
Install closet backup panel (Task 2-2).
Install closet acoustic blanket (Task 2-108).
END OF TASK
11-604
