PROJECTS IN FARM MACHINERY REPAIR 



305 



276. Repairing a Grain Drill. (Fig. 319.) 

 1) Grain Feeds Clean out old grain and dirt. Examine 

 grain feed cup or fluted cylinder, and grain cells. Renew 

 badly-worn or broken parts. Examine method of chang- 

 ing rate of seeding. 



LEVERS BENT BACKWAJ 

 WITHIN EASY REACH OF 

 THE OPERATOR 



INSIDE 

 DRAW BARS 



PIVOTED 

 PRESSURE YOKE 



FIG. 318-a. Details of construction of disc harrow. 



2) Chains, Drive Shaft and Gears Trace power from 

 wheels thru chains, shaft and gears to feeding device. 

 See that there is no lost motion due to loose, broken or 

 worn parts. 



3) Openers Sharpen opener if dull. If disc opener, exam- 

 ine the bearings and replace if badly worn. See that 

 they are properly lubricated. Adjust springs so enough 

 pressure is on openers. 



