Cable Lubrication

Figure B-1. Methods of Applying Lubrication

TM-5-3810-305-10 Crane Wheel Mounted Hydraulic Light 7 1/2 Ton (Rough Terrain Crane) Model LRT 110 Manual
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TM5-3810-305-10 No personnel are permitted on the deck while rotating upper- structure. Failure to follow this procedure could cause DEATH or serious injury. Lubricate swing bearing through the grease fitting on the inside of cab while rotating the upperstructure. Cable Lubrication During fabrication, ropes receive lubrication; the kind and amount depending on the rope’s size, type, and anticipated use. This in-process treat- ment will provide the finished rope with ample protection for a reasonable time if it is stored under proper conditions. But, when the rope is put into service, the initial lubrication may be less than needed for the full useful life of the rope. Because of this possibility, periodic appli- cations of a suitable rope lubricant are necessary. The important characteristics of a good wire rope lubricant are as follows: 1. It should be free from acids and alkalis. 2. It should have sufficient adhesive strength to remain on the ropes. 3. It should be of viscosity capable of penetrat- ing the interstices between wires and strands. 4, It should not be soluble in the medium sur- rounding it under the actual operating condi- tions. 5. It should have a high film strength. 6. It should resist oxidation. l Dry cleaning solvent P-D-680 l used to clean parts is toxic and flammable. Use only in well ventilated areas and avoid contact with eyes, skin or clothing. Do not breath vapors. Wear the proper protective clothing and equipment: goggles or safety glasses, face shield and gloves. Do not use near sparks or open flames and do not smoke while using it. Failure to follow these procedures could cause SERIOUS INJURY. Compressed air used for cleaning purposes must not exceed 30 psi (207 kPa). Safety glasses must be used when cleaning parts. Failure to follow this procedure could cause SERIOUS INJURY. Before applying lubrication, accumulations of dirt or other abrasive material should be removed from the rope. Cleaning is accomplished with a stiff wire brush and dry cleaning solvent P-D- 680, and dried with compressed air. Immediately after it is cleaned, the rope should be lubricated. When it is normal for the rope to operate in dirt, rock or other abrasive material, the lubricant should be selected with great care to make certain that it will penetrate and, at the same time, will not pick up any of the material through which the rope must be dragged. As a general rule, the most efficient and most economical means to do cable lubrication/protection is by using some method or system that continuously applies the lubricant while the rope is in motion. Many techniques are used, including the continu- ous bath, dripping, pouring, swabbing, painting, and where circumstances dictate, automatic sys- tems can be used to apply lubricants either by a drip or pressure spray method (Figure B- 1 ). B-2

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