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Post by Beerwiser on Apr 6, 2021 11:54:11 GMT -6
Any tips on removing the bottom sieve on a 9720? Neighbor asked for help with it. He and his son in law tried, but it seems to be rusted up on the channel that it slides in on. They even tried pulling on it with a tractor lol. I am wondering if a guy could put a hydraulic spreader and push on the wall of the combine just a bit to help loosen it up. I haven't seen it yet so just wondering what is a good way if there is one.
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Post by Albertabuck on Apr 6, 2021 13:32:10 GMT -6
Would that be the same as a MF 8560? A neighbor had always thought about one of them and years ago I seen the service manual on ebay so I bought it for him, neighbor ended up getting another TR, but I still got that book.
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Post by Beerwiser on Apr 6, 2021 17:42:01 GMT -6
MF 8590 is the rebranded version from what I can tell. Probably the same setup as the 8560, just a tad larger.
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Post by Albertabuck on Apr 6, 2021 21:06:55 GMT -6
Well according to that manual, there is only bolts holding the sieve across the rear channel of the grain pan, and not very many at that.
However, they do mention about having to shake the sieve back and forth sideways to free up chaff built up before you can slide it out.
Without being able to physically see how the pan is constructed, might be possible to perhaps try to carefully spread the sides to gain a bit of room, any little bit would help but at the same time, can't be over done or it may not come back to true.
I absolutely shudder at the mention of hooking a tractor on to it...wowsers, something like that I will use a chain comealong or such, to load it it up a bit, and it also gives you something to yank sideways on to move things around, but one has to keep in mind you're ultimately pulling on the gran pan frame itself.
Don't know what to suggest. Don't suppose at some point someone installed some extra bolts somewhere? These things happen. Good example is my old Versy 2K, been a lot of remanufacturing went on inside that one lol.
Besides added bolts, they make sure there isn't some form of tension being applied at the front of the sieve, as for example a rod running from side to side that when tightened squishes everything together...who knows what, might just be chaff and fines jamming things up too.
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Post by Beerwiser on Apr 7, 2021 9:08:22 GMT -6
Yeah I can't believe they used a tractor, but he likes using brute force rather than finesse. I looked at it yesterday evening and that is what I will try. Come along and hammering the edges. Spreading it is a last resort. There are only two visible bolts at the back holding it in place, but won't know if there is more until the top one is out.
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Post by christianh on Feb 20, 2023 17:54:14 GMT -6
On our 8570 (which is more or less the same), We couldn't get the lower sieve out to save our lives. It was harvest rain was coming, it needed out and I didn't care if it came in pieces. Hooked a chain to the middle of it, then to the rear axle on a loaded superB. Drove combine forwards. A loud bang and the sieve came out... Seems they swell sideways as they rust. Hooking into the middle, it pulled the center out, narrowing the sieve on the end and it finally let go. Didn't damage anything on the combine.
New one got anti-sieze all the way around, have had it out once or twice, slides nice now.
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Post by Beerwiser on Feb 21, 2023 0:30:40 GMT -6
Geeze I forgot about this. I ended up using 2 portapaks on it. One portapack pulling in the center of the sieve and the other portapak spreading the walls of the combine along with a pry bar by the spreader portapak. Came out pretty easily considering. Anti-sieze is a good idea, but not my combine and at his age he will never have to worry about it.
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