CHAPTER IX. 



THE TRACTION GEARING. 



HEN the traction gearing is used only in 

 moving the engine from place to place, very 

 little attention need be given to it. When, 

 however, the engine is used for plowing or 

 for hauling freight, the gearing must receive 

 careful attention in order fo prevent the pos- 

 sibility of expensive repairs. The parts 

 which require special attention on engines used for hauling 

 heavy loads are the lower cannon bearing and the stud on 

 which the intermediate gear runs. The pinions on the 

 counter-shaft should mesh properly with the gears on the 

 traction wheels. These may be set deeper into mesh on 

 "Case" engines by adjusting the turn-buckles in the links, 

 called "distance links," which connect the upper and lower 

 cannon bearings. The springs which carry the weight of the 

 boiler should not have too much leeway if the engine be 

 used for heavy hauling. 



Oiling the Cannon Bearings. A quantity of oil may be 

 poured into the upper and lower cannon bearings, which 

 will insure the lubrication of the axle and counter-shaft, 

 since it can only work out at the ends. The oil boxes 

 should be partly filled with wool or waste, and all other 



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