CHAPTER IV. 

 LUBRICATION AND ADJUSTMENT OF BEARINGS. 



EEP the bearings of the engine well oiled if 

 you would have it last and not cause trouble. 

 By "well oiled" is not meant that it should 

 be "swimming" in oil, but that its bearings 

 should be always lubricated. It does not 

 take very much good oil to keep a bearing 

 properly lubricated, but you should apply it 

 often and be sure that it reaches the place intended. Many 

 of the oils now on the market are largely adulterated with 

 rosin and paraffine, and, though having an excellent appear- 

 ance, have poor lubricating qualities, are gummy and dry 

 up in a short time. The oil-boxes on the crank-shaft bear- 

 ings, and wherever possible elsewhere, should be filled with 

 wool or cotton waste to retain the oil and keep out sand and 

 grit. The covers of these oil boxes should be kept closed. 



Cylinder Lubrication. Use a good quality of Valve or 

 Cylinder Oil in the lubricator or the oil-pump, as it is very 

 important that the piston and valve should be well lubricated 

 with an oil that will stand the high temperatures of the steam. 

 Do not imagine that a large quantity of cheap oil will do 

 in the cylinder. Nothing but first-class cylinder oil will 

 answer, and it must be used in sufficient quantities. Cylin- 



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