Adjusting Threshing Cylinder and ConcaveIMPORTANT: Threshing cylinder speed and concave spacing are the two most important factors in obtaining good harvesting results. Adjust spacing between concave and cylinder in order to obtain optimum threshing performance . Incorrect adjustment: Threshing cylinder speed too high + Concave spacing at minimum = Overthreshing Insufficient threshing cylinder speed + Maximum concave spacing = Insufficient threshing NOTE: Overthreshing or insufficient threshing are normally caused by inadequate threshing cylinder speed or concave spacing. Start with threshing cylinder speed adjustment. As a rule, reduce/increase speed by only 5%. Check the result of this change before changing any other settings. If the problem is not solved by a 10% reduction in threshing cylinder speed, open/close concave spacing slightly. If these steps do not correct improper threshing, try reducing/increasing combine ground speed. A very high crop volume and very high ground speed can cause underthreshing. IMPORTANT: Always check results before attempting further adjustments. Never change any adjustment by more than 5% at a time. Correct adjustment: Moist crop: Increase cylinder speed and/or reduce concave spacing. Dry crop: Reduce cylinder speed and/or increase concave spacing. |
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ML70882,0000902 -19-21MAR06-1/1 |