TM 55-1520-240-23-911-60INSPECT THRUST CONTROL11-60INITIAL SETUPApplicable Configurations:AllTools:Aircraft Mechanic’s Tool Kit, NSN 5180-00-323-4692Materials:NonePersonnel Required:Medium Helicopter RepairerInspectorEquipment Condition:Battery Connected (Task 1-39)Electrical Power OnHydraulic Power On1.Inspect thrust control (1) for looseness as follows:a.Press THRUST CONT BRAKE TRIGGERswitch (2). Pull control (1) up about 3 inches.Release switch.b.Push control grip (3) left then right. Applyforce of about 10 pounds at end of grip.c.Measure movement at end of grip (3).Distance must not be more than 0.19 inch. Ifdistance is less, go to step f. If more, performsteps d and e then go to step f.d.Check looseness at pivot block bolt (4). Ifloose, tighten nut (5).e.Check looseness between shaft (7) and ballspline assembly (8). If looseness causes0.19 inch movement at grip (3) replace ballspline assembly.f.Press switch (2). Position control (1) fullydown. Release switch.INSPECTFOLLOW-ON MAINTENANCE:Remove hydraulic power.Remove electrical power.END OF TASK11-278
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