TM 9-2320-279-34-3M977, M905, and M984E1 Crane Maintenance Instructions (Cont)17-33. OVERLOAD SENSOR SWITCH ADJUSTMENT (CONT). b . A d j u s t m e n t M a i n O v e r l o a d ( M 9 7 7 O n l y ) .NOTE(1)(2)(3)(4)(5)(6)(7)(8)(9)(10)(11)(12)(13)(14)(15)(16)Main overload switch is located on left side of hoist looking from boom nose.Position hoist (1) at maximum boom angle over weight (2) and attach.NOTEIf hoist attempts to lift weight and stops, do steps (4) through (9).If hoist lifts weight and does not stop, do steps (12) through (16).Lift weight.If hoist attempts to lift weight and stops, do steps (4) through (9).Wait six seconds and lower weight.Loosen nut (3) 1/4 turn. Push switch (4) in toward plate.Tighten nut (5).Repeat steps (2) through (5) until weight can be lifted.Loosen nut (3) 1/4 turn. Tighten nut (5).Overload sensor switch is adjusted.L i f t w e i g h t .If hoist lifts weight and does not stop, do steps (12) through (16).Lower weight.Loosen nut (5) 1/4 turn. Push switch (4) away from plate.Tighten nut (3).Repeat steps (8) through (10) until weight cannot be lifted.Loosen nut (5) 1/4 turn. Tighten nut (3). Overload sensor switch is adjusted.c. Follow-on Maintenance. None.END OF TASK17-152
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