Combines Sudden Hydraulic leaks

Combine_Wizard

Guest
Well, 300 bushels is a lot of weight and strain on a 7700. Hmmm.
 

pbutler

Guest
Don't see how that could cause it after it has been sitting empty in the shed for a couple months. I suspect something du to cold fluid expanding when warm and causing a leak-but it was warm when I put it away so not sure if that really holds water... I was a little weary of that combine at first for the reason you mention-but the previous owner ran 1800 acres through 2 7700's like mine for 18 years. Only problem they had was 1st rear axle breaking-2nd home built heavy duty one has held up now for the last 16.
 

Combine_Wizard

Guest
Actually, you are right. Was just teasing a little about the big hopper--"Oh my aching back!" lOl! Seriously, you should look at the seals. Yes, I believe you're onto something with the weather extremes. BTW, I sure did enjoy the pics of the 7700. I hope just after next year's harvest, you will post more. Is that 1974 one also yoursIJ
 

pbutler

Guest
No the 74 is still owned by the guys who built it. I asked them whey they were selling the newer one and it turns out they repowered it with a large Cummins back when it was modified. They figure they have put over 3 million bushels through it and want to see what they can get-I have no idea on the hours. FYI they sold me the 7700 because after 30 years they bought their first new combine-a 9760. I was kidding them about what they are going to do to it-make some 600bu bin or something. lOl I think they are going to continue to run 6 row heads even with the new machine-but they sure will be going a lot faster...not many people running that small of a head on those machines. I think that 9760 has something similar to the bin size on mine so with the 6 row head they can contine to make full rounds and unload over the ditch with no grain carts needed. I will take one of the leaking hoses off and see what I can find. May wait a bit and see if it just stops once weather evens out...
 

Combine_Wizard

Guest
Now I will agree about the need for the 9750_9760 really needing more bin capacity. I watched at least 5,000 bushels of corn shelled in just 1 hour by a 9750, 12-row head, 235 bpa irr. corn, 5.5 MPH. I rode the combine myself. Now there were 2 big 1040 Kinze wagons running back and forth as fast as they could. It just seemed that for the combine, the ingoing stream of corn almost matched its unloading. About 80 percent of the time, the machine was unloading on the go. It seemed to only take maybe 4-5 minutes to fill the combine's 300-bu bin. It sure would not not be efficient to let that combine travel more than maybe 100 feet or so without the wagon by his side! What I'd really think to be efficient, would have that new Balzer wagons which can unload real fast. Just saving on unoading time counts for a lot in heavy corn! On second thought, scratch the idea of a 600-bu combine. The weight would kill those finals! A 400 bushel bin would help, though. I still would get away from such a skimpy corn head, though. Only 6 rowsIJ Come on! If only 6 rows, a 300-bu bin is more than enough. The 7700 even did 8. One thing the rotary combines do have going for them, though, is the fact they are not as sensitive to being underfed as are the walker machines.
 
 
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