CHAPTER XI. 

 LUBRICATION AND CARE OF THE SEPARATOR. 



life of the machine depends largely upon 

 the thoroughness of its lubrication. A light 

 oil with good wearing qualities should be 

 used. Thin oil is surer to reach the place it 

 is intended to lubricate than thick, heavy oil. 

 A journal is more apt to be continually lubri- 

 cated when a small amount of oil is applied 

 frequently than when a great deal is used at longer intervals. 

 Many of the oil boxes on the machine, as for example those 

 on the rock shafts, may be partly filled with wool or cotton 

 waste. Either will keep out dirt and make them hold oil 

 longer. This wool or waste should be renewed at the be- 

 ginning of each season and more frequently in localities in 

 which there is sand. Use a nail or soft wire to clean out oil 

 holes, for if a piece of steel be used when shaft is running, it 

 is liable to "score" and injure the journal. 



Hot Bearings. The causes of hot bearings are : I In- 

 sufficient lubrication because of too little or too poor oil or 

 hole being stopped up; 2 Dirt or grit on the journal; 3 

 Box too tight; 4 Belt too tight; 5 Box not in line with 

 shaft ; 6 Collar or pulley too tight against end of box ; 7 

 Journal rough or shaft sprung. In case a box heats, cool 



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