TM 1-1520-238-23
Change 1
5-47
5.8.
MAIN ROTOR BLADE PHASE ADJUSTMENT – continued
h. Move collective stick (13) until bubble level
(14) on target (3) is centered.
(1) Apply collective friction by rotating collar (15).
i. Shut down external primary hydraulic power
(para 1.72).
NOTE
The phasing tool may be used with either
laser or telescopic sight.
j. Install the phasing tool (16) in the hub sling
holes (17) so that the laser (18) or telescope
(19) points toward target (3). Use helicopter
rotor head balance and blade tracking test
equipment.
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14
3
15
13
M04-3042-13
M04-3042-8
19
17
16
18
17
16
