TM 1-1520-238-23
Change 5
5-49
5.8.
MAIN ROTOR BLADE PHASE ADJUSTMENT – continued
n. Remove tool (16) from main rotor hub (20).
o. Repeat steps a. thru c. and j. thru n. for re-
maining blades.
CAUTION
To prevent damage to flight control sys-
tems do not use force if binding or rough-
ness occurs while moving controls with
hydraulic power.
p. Apply external primary hydraulic power (para
1.72).
q. Remove two -5 rig pins (7) from the bellcrank
(6) and bellcrank (10).
r. Enter pilot station (para 1.56). Observe all
safety precautions.
s. Lower pilot collective stick (13).
(1) Rotate collective stick friction collar (15) to
zero.
(2) Move stick (13) full down.
(3) Rotate collar (15) to apply friction.
t. Shut down and disconnect external primary
hydraulic power (para 1.72).
u. Inspect (QA).
v. Install access panels L200 and R200 (para
2.2).
w. Perform main rotor track and balance mainte-
nance operational check (TM 1-1520-238-T).
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