TM 55-1520-240-23-9
11-140
REMOVE YAW SPRING ASSEMBLY
11-140
INITIAL SETUP
Applicable Configurations:
All
Tools:
Aircraft Mechanic’s Tool Kit, NSN 5180-00-323-4692
Materials:
Paper Tag (E264)
Personnel Required:
Medium Helicopter Repairer
References:
TM 1-1520-253-23
Equipment Condition:
Battery Disconnected (Task 1-39)
Electrical Power Off
Hydraulic Power Off
Closet Acoustic Blanket Removed (Task 2-107)
Closet Backup Panel Removed (Task 2-2)
Yaw Magnetic Brake at Neutral (TM 55-1520-240-T)
NOTE
If a crack in the bellcrank is
suspected during removal, refer to TM
1-1520-253-23.
1.
Tag yaw spring assembly (1). Remove cotter
pin (2), nut (3), two washers (4), and bolt (5)
from idler bellcrank (6). Disconnect spring from
bellcrank.
2.
Install bolt (5), two washer (4), and nut (3) loosely
in bellcrank (6).
3.
Remove cotter pin (7), nut (8), two washers (9),
and bolt (10) from magnetic brake arm (11).
Remove spring (1).
4.
Install bolt (10), two washers (9), and nut (8)
loosely in arm (11).
FOLLOW-ON MAINTENANCE:
None
END OF TASK
11-605
