TM 55-1520-240-23-4
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INSPECT CENTRIFUGAL DROOP STOP SPRINGS AND BALANCING ARMS (Continued)
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4.
Check springs (6). Coils (7) shall align and
spacing shall be uniform.
5.
Check sleeves (8) on limiter springs (9). Sleeves
may be worn through if wire diameter is not less
than 0.090 inch.
CAUTION
Do not spread individual spring coils
more than 1/4 inch. Overspreading
will weaken spring.
NOTE
If necessary, remove springs and
limiters for inspection.
6.
Inspect springs (6) for wear as follows:
a.
Spread spring coils (7). Raise limiters (9)
from inside bottom diameter of spring (6).
Inspect limiters and inside diameter of spring
for wear.
b.
Reject spring if wire diameter is less than
0.050 inch. Reject limiter if wire diameter is
less than 0.090 inch.
c.
Pull spring inward toward hub center so
spring loops within the yoke opening can be
seen. Inspect sides of spring (6) for wear
where it passes around grommet (10). Refer
to step b for rejection data.
d.
Inspect spring (6) for wear where it passes
around bolts at each end. Refer to step b
for rejection data.
FOLLOW-ON MAINTENANCE:
Install droop stop shrouds (Task 5-48.5).
Close aft pylon work platform (Task 2-2).
END OF TASK
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