122 SCIENCE OF SUCCESSFUL THRESHING. 



set up and run a couple of hours, before attempting to 

 thresh any grain. Look into the machine on the straw rack, 

 conveyor and fans, and then turn each shaft by hand a few 

 revolutions to make sure there is nothing loose or misplaced 

 in the machine, before putting on the belts. 



Oiling. The oil boxes should be carefully cleaned of 

 cinders and dirt that may have collected during shipment, 

 and the paint removed from the oil holes. Screw down the 

 plugs of the grease cups on beater, fan and crank boxes to 

 the end of the threads, using a wrench, if necessary, to clean 

 off the paint. Fill the grease cups on beater, fan and crank 

 boxes with hard oil and fill oil cups on cylinder boxes with 

 a good lubricating oil. It is best to first place a small quan- 

 tity of wool or cotton waste in the bottom of each oil-cup. 

 Connect the separator with engine or other power, running 

 only the cylinder for a time, and feeling of the boxes to ascer- 

 tain whether they show any tendency to heat. While the 

 cylinder is running, oil both ends of the crank pitmans, the 

 four bearings of the rock shafts and the two of the tailer 

 rock shaft if there be one. Take off the tightener pulley from 

 its spindle, clean the oil chambers and oil the spindle before 

 replacing it. Put on the belt driving beater and crank (see 

 cut page 170), which will put the beater, straw rack and 

 conveyor in motion. Next oil the shoe-pitman eccentrics and 

 the bearings of the shoe shaft if there be one. ^ This shaft is 

 driven from the fan on right side of machine (see cut page 

 176). The fan belt, which runs over crank belt, but 



