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SWMN | Let me see if I can walk through your problems with the too fast Geringhof. If you can get it to work like it did on the 9550, it will be your best option.
First we shall assume the entire cornhead is turning too fast, which is never good. As your header is a 2005 and used I doubt you have the header speed /stripper plate spacing box in your combine cab, so getting a cornhead line shaft speed is probably a chore. Getting the speed of your header jackshaft is easy if you have a hand held shaft tachometer. Some 7088's had a gear box that gave the feeder jackshaft two speeds, one standard and a slower one. I assume the Hillco modifications caused a loss of the that feature if your combine had it to begin with? Just by coincidence did the driven pulley on the feeder jackshaft get changed to a smaller one than production when the Hillco was installed? That could explain some of what is going on? Rotadiscs come with 37 tooth Driven gears in the the rear gear cases for CIH combines. 42 tooth and larger are also available. IF you removed the 37 tooths and replaced it with 32 tooths you decreased the final gear ratio increasing the cornhead line shaft speed. You can tell what gears were originally in the gear cases by the PN/SN plates on the boxes. Look on the bottom line for Z = Z stands for Zahnrade which means gear. (Disclaimer on the gear boxes I am only familiar with headers made after 2008 and older ones may have some different ratios.)
Second if the stalk rolls aren't the problem, the auger can be slowed down as well by changing the drive sprocket on the header jackshaft. There are several available and Geringhoff changed their speeds along with the their auger flight pitch over the years. The different augers will all have a best speed. If the auger is throwing ears, is it only in one place? A cornhead auger with just a small bend or imperfection that tips the flighting backward will make an ear thrower. | |
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Best Corn head for CIH 7088
