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Central Alberta | Had a similar problem with an IH 403 this week. All combines are very similar inside so to deal with unthreshed heads you need to bring the concave closer to the cylinder and possibly speed up cylinder. Then watch for cracking and slow cylinder once you get cracking. If the wheat was tough like ours was, then it is more difficult to get complete threshing. If rasp bars and concave are worn then you have problems completely threshing wheat whereas it will be fine in easier threshing crops like oats, canola or peas. The other thing to do is to closing the bottom sieve a little and return more unthreshed heads back to the cylinder for another threshing pass. Straw in the tank is dealt with by upping the fan speed and closing the top sieve a little bit. Go to ytmag.com forum and post on the combines or case page there since there are a number of farmers on there that still use these machines for specific settings. | |
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older case combines. 960 -1660 specifically
