TM 55-1520-240-23-9
11-141
REMOVE PITCH OR ROLL SPRING ASSEMBLY
11-141
INITIAL SETUP
Applicable Configurations:
All
Tools:
Aircraft Mechanic’s Tool Kit, NSN 5180-00-323-4692
Materials:
Paper Tags (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)
Pitch CCD Actuator or Roll Magnetic Brake at Neutral
(TM 55-1520-240-T)
NOTE
Procedure is same, except as
noted, to remove pitch or roll spring
assemblies. Pitch spring is shown
here.
NOTE
If a crack in the bellcrank is
suspected during removal, refer to TM
1-1520-253-23.
1.
Tag pitch 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), head inboard relative to pallet, two
washers (4), and nut (3) loosely in bellcrank (6).
3.
Remove cotter pin (7), nut (8), two washers (9),
and bolt (10) from arm (11) of CCD actuator (12).
Remove spring (1).
NOTE
Roll spring assembly is removed from
arm of roll magnetic brake.
4.
Install bolt (10), head outboard relative to pallet,
two washers (9), and nut (8) loosely in arm (11).
FOLLOW-ON MAINTENANCE:
None
END OF TASK
11-606
