310 FARM MACHINERY REPAIR 



plate is very important from a standpoint of accuracy in 

 planting. The careful grading of seed and proper selec- 

 tion of plate are big factors in securing a good test. 



280. Repair and Adjustment of Fertilizer Distri- 

 buters. 



Requirements: To repair and adjust ready for field use the 

 principal fertilizer distributers, including manure spread- 

 er, straw spreader, fertilizer and lime drills (Fig. 321). 



Preliminary Instruction: The manure spreader is a machine 

 that is found on most farms where there is stock. Straw 

 spreaders, fertilizers and limestone drills are becoming 

 more common thruout the country. 



281. Repairing Manure Spreader. (Fig. 321.) 



1) Box and Apron Tighten all bolts in box so that it is 

 rigid. Examine apron for broken places or damaged 

 chain. Replace broken or worn parts. See that the 

 rollers that carry the apron turn easily and offer little 

 resistance. 



2) Frame Tighten all loose parts on the frame of spreader 

 and renew all broken parts. 



3) Beater See that bearings are in first-class condition. 

 Tighten the bars and see that the teeth are straight and 

 firmly in place. Replace all broken teeth. 



4) Driving Mechanism Examine carefully the drive chains, 

 gears and sprockets that transmit the power from the 

 drive wheel to the beater and to the apron. Weak parts 

 should be replaced. Adjust chains to proper tightness. 

 See that all bolts are drawn up tight. 



5) Wheels Take off drive wheels and examine the pawls. 

 Examine bearings on rear axle and on trucks. 



