TM 1-1520-238-23
5-57
5.10.
MAIN ROTOR BLADE DROOP ANGLE MEASUREMENT – continued
WARNING
If hoisted components are allowed to
fall, personnel can suffer injury or
death. Keep away from component
mounting surfaces and loaded crane
boom. If injury occurs, seek medical
aid.
h. Position crane hook (19) in lifting ring (20).
CAUTION
Do not lift blade. Damage to main rotor
head will result.
NOTE
Locking spherical bearing on sling allows
main rotor blade position adjustment 15
degrees in any direction to ensure proper
removal/installation angle.
i. Adjust position of sling (10) for lifting blade
(14).
(1) Hold torque handle (21) and move clamp
handle (22) counterclockwise to release
bearing.
(2) Take up slack in sling (10).
(3) Hold torque handle (21) and move clamp
handle (22) clockwise to lock bearing.
j. With assistant, raise blade (14) (opposite
blade (8) to be measured).
(1) Raise blade (14) until main rotor droop stop
(23) does not touch roller (24). Use crane and
sling set kit.
(2) On blade (8) ensure main rotor droop ring
(25) bottoms out on static ring (26).
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20
19
22
21
LOCK
UNLOCK
10
M04-209-12
23
24
26
25
14
8
M04-209-3
