28
              
            
            
              
                4.8     ATTACHING/UNHOOKING
              
            
            
              The Pro Grain Extractor uses a tractor for operation
            
            
              and at times for moving or transporting.  A truck can
            
            
              be used for transporting from location to location.
            
            
              
                4.8.1     TRACTOR
              
            
            
              When attaching the machine to a tractor, follow this
            
            
              procedure:
            
            
              1. Clear the area of bystanders, especially small
            
            
              children.
            
            
              2. Make sure there is enough room and clearance
            
            
              to safely back up to the machine.
            
            
              3. While backing up, align the hitch and drawbar.
            
            
              4. Be sure the drawbar dimension is set at 14
            
            
              inches (358 mm) between the end of the tractor
            
            
              PTO shaft and the center of the drawbar pin.
            
            
              5. Stop tractor, set park brake, remove ignition
            
            
              key and wait for all moving parts to stop before
            
            
              dismounting.
            
            
              6. Use a drawbar pin with provisions for a me-
            
            
              chanical retainer.  Install the retainer.
            
            
              
                Fig.  17   DRAWBAR DIMENSION
              
            
            
              
                Fig.  18   DRAWBAR PIN