306 



FARM MACHINERY REPAIR 



4) Seed Tubes Test seed tubes to see that they do not clog 

 easily. 



5) Wheels If wheels are of wood and are dried out so that 

 the tire is loose on the rim, they should be soaked in water 

 until swelled tight. The pawls in the hub are an impor- 



Tilting Lever 



Grass Seed Attachment 

 Wood or Steel Wheels 



Weight of Frame, Etc.."" 

 Carried on Wheel Hubs 

 - Not on Axle 



DiscOpeners 



Seed Tube 



FIG. 319. Grain drill. 



tant part of wheels to give positive drive. See that the 

 pawls engage and start the seeding device as soon as the 

 wheels turn. 



6) Frame and Levers See that all bolts are drawn up 

 tight and the frame is rigid. Examine levers and see 

 that they are straight and function properly. 



7) Attachments See that attachments such as surveying 

 device and devices for setting rate of seeding are tight. 

 Check their accuracy if they are to be depended upon. 



