Re: Dania D8500 (or MF31)
I would think if the bearings or bushings that the sieves (shoe) hangs on have looseness or play in them or don't turn properly, that could be the problem. We had a combine that had many bearings go out many years ago because someone (perhaps the dealer) steamed off the combine and got water inside the sealed bearings. We have an IH that I couldn't find bushings for to fit inside the hanger from which the shoe hangs when shaking. Made my own and drilled grease holes in it. Doesn't work perfectly because eventually it will break the bolts that hold on the metal hanger attatched to the frame that holds the greased bushings which allow the sieves to shake. I now have a parts combine I bought so I can probably take the parts off of it. Sometimes in harvest, when we can't take the time to overhaul the combine, we will punch or drill a hole in the side of a bearing and pump grease into it with a needle point. My dad made his first one by brazing a zerk grease nipple onto a needle used to inflate sports balls. He has one old antique IH combine with a Hesston chopper(from the 60's) on it that Dad greases the chopper bearing on twice a day when he uses the combine. Has run for years like that.