LUBRICATION AND ADJUSTMENT OF BEARINGS 49 



the lower edge of the bright plate. The cup should then 

 be refilled. To do this, close valves E and G, open the 

 drain I and remove cap F, fill while draining; then close 

 I when oil appears and proceed as above. When the en- 

 gine is shut down, close valve G. 



When Lubricator Fails to Work. If the Lubricator 

 should become clogged from impurities in the oil, remove 

 cap F and glass D, then open valves G and E, and the 

 passages will be cleaned by steam pressure. In blowing 

 remove cap F and glass D, then open valves G and E, and 

 the passages will be cleaned by steam pressure. In blow- 

 ing live steam through the Lubricator to clean out the pas- 

 sages, always take off the nut D holding the sight feed glass 

 before doing so, for if this be not done, the steam would 

 heat the glass and render it liable to break when the oil 

 comes in contact with it. Many cups are ruined by two 

 causes, viz. : by freezing and by straining. In cold weather 

 the cups should be drained before leaving the engine. The 

 valve E should be slightly opened, except when filling, for 

 if left closed, the expansion of cold oil having no relief will 

 strain the cup. 



The little bright plate that shows the sight feed drops 

 should be kept clean and bright by an occasional wiping 

 with a little silver polish ; if this be not done, it becomes 

 tarnished and does not show the feed properly. When a 

 glass breaks, if an extra one be not at hand, a coin may be 

 put in and the cup run "blind feed" until a new one is pro- 



