TM 55-1520-240-23-4
5-99.2
CHECK DRIVE COLLAR AND DRIVE ARM RADIAL PLAY (Continued)
5-99.2
CHECK LOWER DRIVE ARM RADIAL PLAY
(WITHOUT 46 )
12.1. Disconnect lower end of pitch link from
swashplate (Task 5-97).
12.2. Install pitch link lockpins (Task 5-96.1).
13.
Remove cotter pin (7), washer (7.1), and nut (8)
from bolt (9). Remove bolt.
CAUTION
Do not allow swashplate to rotate.
Rotor head, pitch links, and
swashplate will be damaged.
14.
Clamp indicator (1) to swashplate (10).
15.
Position indicator (1) on lower end of lower drive
arm (5), align with lower drive arm. Preload
indicator against lower drive arm.
16.
Push lower drive arm (5) toward indicator (1).
Record indicator reading C.
17.
Hold swashplate (10) down and pull lower drive
arm (5) away from indicator (1). Record indicator
reading D.
18.
Subtract reading D from reading C. Result shall
not be more than 0.006 inch.
19.
Remove indicator (1) from swashplate (10).
20.
Position lower drive arm (5) in upper drive arm
20 (4).
WARNING
Antiseize compound (E75) can form
toxic vapors if exposed to flame. Use
only with adequate ventilation, away
from open flame. In case of contact,
immediately flush skin or eyes with
water for at least 15 minutes. Get
medical attention for eyes.
21.
Apply antiseize compound (E75) to shank of
bolt (9). Wear gloves (E184.1). Do not apply to
thread or bushing on bolt.
22.
Install bolt (9), washer (7.1), and nut (8) in
lower drive arm (5). Torque nut to 500-700
inch-pounds.
23.
Install cotter pin (7) in nut (8). Go to Follow-On
Maintenance.
INSPECT
Change 2
5-607
