TM 55-1520-240-23-4
5-53
INSPECT ROTOR HEAD CENTRIFUGAL DROOP STOP BOLTS AND LUGS
(Continued)
5-53
7.
Check bearing (12) for grooves. Depth of
grooves shall not exceed 0.031 inch.
8.
Check bolt (7) for wear or thread damage. There
shall be no wear or thread damage. If a crack is
suspected, refer to TM 1-1520-253-23.
9.
Temporarily install bolt (7) through two washers
(11), bearing (12), limiter spring (10), and
extension spring (9). Install two washers (6) and
nut (5) loosely on bolt.
10.
Remove cotter pin (13), nut (14), and two
washers (15) from bolt (16) through balancing
arm lugs (17).
11.
Remove bolt (16), extension spring (9), limiter
spring (10), two washers (18), and bearing (19)
from balancing arm lugs (17).
12.
Check bearing (19) for grooves caused by limiter
spring (10). Depth of grooves shall not exceed
0.031 inch.
13.
Temporarily install bolt (16) through two washers
(18), extension spring (9), limiter spring (10), and
bearing (19). Install two washers (15) and nut
(14) loosely on bolt.
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