PROJECTS IN FARM MACHINERY REPAIR 321 



5) Racks Inspect the racks for broken slats. See that the 

 bearings are tight. Replace or adjust worn links and 

 pitmans. 



6) Conveyor See that all parts are tight to avoid wasting 

 grain. Renew metal if it is badly rusted. 



7) Screens See that frames are in good shape. If screens 

 are damaged, renew them. Examine the shoe to see that 

 the castings that carry the screens are in good condition 

 and fastened to the shoe. See that bearings and pitmans 

 are in good shape. 



8) Fan Inspect the fan housing, the bearings and the 

 blades. Replace worn parts where needed. 



9) Grain Augers and Elevators Examine the auger troughs 

 and elevator housing, and all bearings. Replace badly- 

 worn parts. See that the chain is in good condition ; also, 

 that the chain tightener is in good working order. 



10) Stacker See that fan, fan housing and bearings are in 

 first-class shape. 



11) See that all adjustments are made to insure efficient 

 operation. 



Note: Bushing can usually be secured to take care of 

 badly-worn bearings on power-driven machines, but in some 

 cases, babbitting must be resorted to. The following on bab- 

 bitting will be of interest under such conditions: 



289. Babbitting Machine Bearing Boxes. Machine 

 bearings become loose with wear. If the bearings are made 

 in two parts in the form of a split box, adjustments may be 

 made to tighten the bearing until it is practically worn out. 

 If the bearing is in one piece in the form of a solid box, little, 

 if anything, can be done when it is worn to tighten it except 



