TM 55-1520-240-23-4
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BALL SPHERICAL BEARING FRICTION CHECK
(Continued)
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4.
Apply electrical power to helicopter.
Have helper guide pitch links.
Components can be damaged if
forced together under pressure.
5.
Apply hydraulic power to flight control system.
Do not move thrust control quickly.
Thrust control must be raised
very slowly when pitch links are
disconnected, or controls can be
damaged.
6.
Press THRUST CONT BRAKE TRIGGER switch
(5). Raise thrust control (6) slowly to full up
position. Release switch.
7.
Position two support blocks (9) on slider shaft
(10). Secure blocks. Use web strap.
8.
Remove cotter pin (11), nut (12), washer (13),
and bolt (14) from upper end of two actuating
cylinders (7 and 8).
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