TM 55-1520-240-23-4
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BALL SPHERICAL BEARING FRICTION CHECK
(Continued)
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NOTE
Moving thrust control down lowers
actuating cylinders to simplify friction
check.
9.
Press THRUST CONT BRAKE TRIGGER switch
(5). Move thrust control (6) slowly to full down
position. Release switch.
10.
Remove hydraulic and electrical power from
helicopter.
Do not apply hydraulic boost pressure
to move actuating cylinders when
personnel are making swashplate
friction check. Injury to personnel can
result.
11.
Move swashplate (16) so rotating ring (17) is
clear of actuating cylinders (7 and 8).
12.
Install two bolts (18) through actuating cylinder
lugs (19) on stationary ring (20).
13.
Lift lugs (19) all the way up. Use bolt (18).
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