TM5-3810-305-10Equipment
InspectionAny undetected fault on a sheave, roller or drum,be it of relatively major or minor significance,can cause a rope to wear out many times fasterthan the wear resulting from normal operations.As a positive means of minimizing abuses andother-than-normal wear, the procedures here setforth should be adhered to. Every observationand measurement should be carefully recordedand kept in some suitable and accessible file.1.2.3.4.Give close examination to the method bywhich the rope is attached both to the drumand to the load. Make certain that the propermeans of attachment is applied correctly, andthat any safety devices in use are in satisfac-tory working order.Carefully check the groove and workingsurface of every sheave, roller and drum todetermine whether each (groove and surface)is as near to the correct diameter and contouras circumstances will permit, and whether allsurfaces that are in contact with the rope aresmooth and free of corrugations or otherabrasive defects.Check sheaves and rollers to determinewhether each turns freely, and whether theyare properly aligned with the travel of therope. All bearings must be in good operatingcondition and furnish adequate support to thesheaves and rollers. Sheaves that are permit-ted to wobble will create additional forcesthat accelerate the deterioration rate of therope.If starter, filler and riser strips on drums areused, check their condition and location.Should these be worn, improperly located orbadly designed, they will cause poor winding,dog legs and other line damage.5. Whenever possible, follow the path that therope will follow through a complete operatingcycle. Be on the lookout for spots on theequipment that have been worn bright or cutinto by the rope as it moves through thesystem. Ordinarily, excessive abrasive wearon the rope can be eliminated at these pointsby means of some type of protector or roller.Refer to Appendix B, page B-2 for completeinformation regarding lubrication of the cable.4 - 55CableLubrication
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