JD 1910 tank bridging! - Page 2 - The Combine Forum
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post #11 of 31 (permalink) Old 05-18-2019, 06:37 AM
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Originally Posted by maver View Post
I have a JD 1910 air tank, 430 bu cart. The rear 200 bu tank will bridge on runs 1 and 6, the outside runs. It only does this with oats and barley, both treated and untreated.the agitator is set on high. Have changed rollers, no difference. Can't figure out why it happens. Static cling? (Poly tank). The bridging is random and my blockage monitor will not detect it because I still have fert going through the system, resulting in misses. There are hundreds of these tanks out there ,I'm sure someone has had this problem. Any help greatly appreciated.

Its a common problem especially with oats. We just cant seed our oats varieties with our 1910. And when I posted a question in my local cropping page most had the same problem. Of course the dealers will say your the only one!!!
Those that had success said the secret was to put through a Geraldton plumbing cleaner which is basically a large fan with the grain falling through the air blast and you have a movable cutoff plate to separate the light dust and heavier oats. Once you have them as dust free as possible chuck in handfuls of Talcum powder in the auger as you fill the tank. That is the only reliable way to seed our varieties. Yours may be different.
I'm currently have trouble with fungicide treated compound fertilizer. Keeps breaking the bolt on the agitator crank then the runs block.
Your probably asking why not get rid of it and buy another tank. Answer is I cant afford to park it in the bush and shell out the cash for another as they have zero trade in value with such a bad name around here.

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post #12 of 31 (permalink) Old 05-18-2019, 09:30 AM
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If the tanks are double shoot, do you have the seed going through the top set of tubes or bottom? If it’s the bottom, there can be a problem with the grain getting around the top tube. Doing large chickpeas years ago, we had to switch our hoses and put them out the top set of tubes.


Brent.
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post #13 of 31 (permalink) Old 05-18-2019, 11:11 AM
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Whenever we had issues with bridging in our 1910, we resorted to unloading the tank and refilling it. Pulled the meters and cleaned up while making sure things were working properly. Dustier oats that we’re poorly cleaned is the most troublesome or long distance transport can cause it. I would also avoid running out of only 1 tank at full rate and instead split the rate between the tanks.
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post #14 of 31 (permalink) Old 05-19-2019, 02:21 AM
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We also used to have the problem with the bridging and little skips and misses in our fields as the outside runs would not flow properly for the first 200 feet of every pass. I am not sure if it was another post on this forum a few years ago that solved it or if it was Terry D at Cervus Saskatoon who found the solution.
We needed to get more positive pressure in our tanks when working with oats and barley. We removed the pressurization hoses off those annoying manifolds by the tank meters and plumbed both sides directly into the side of the tanks. Run the hoses inside the tanks to just under the lids. When operating with oats barley and wheat we open the ball valves that control air from both top and bottom air streams so more air flows into the tank. We have not had a bridging problem since modifying the cart.
Also those annoying manifolds at the bottom that you are supposed to pull off and clean out every 50 hours we now just clean out at the end of the year. I don’t even know if we actually need to do that at all because they are capped off and not being used.
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post #15 of 31 (permalink) Old 05-19-2019, 03:11 AM
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Having the same issues as well this year on the back tank. Various towers would just kinda phase out and back in over 200m stretches. Happened in Ore42 oats and happening with Sulphur based fert blend. The oats Iím the same with agitation on high, lid pressured, etc. However with the fert is has mainly been dusting off and bridging under the meters. I slide my top/bottom run selectors and it seems to loosen it. Been after the fert dealer to oil the fert more itís so dusty but maybe itís making the problem worse? As for the oats the manual says the lightest product should never go closest to the fan, Iím thinking could be a pressure differential bridging the oats in the run that has the least pressure until it breaks the bridge. In the end I donít think Iíve solved the issue yet.
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post #16 of 31 (permalink) Old 05-19-2019, 04:06 PM
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Originally Posted by Granite Smasher View Post
We also used to have the problem with the bridging and little skips and misses in our fields as the outside runs would not flow properly for the first 200 feet of every pass. I am not sure if it was another post on this forum a few years ago that solved it or if it was Terry D at Cervus Saskatoon who found the solution.
We needed to get more positive pressure in our tanks when working with oats and barley. We removed the pressurization hoses off those annoying manifolds by the tank meters and plumbed both sides directly into the side of the tanks. Run the hoses inside the tanks to just under the lids. When operating with oats barley and wheat we open the ball valves that control air from both top and bottom air streams so more air flows into the tank. We have not had a bridging problem since modifying the cart.
Also those annoying manifolds at the bottom that you are supposed to pull off and clean out every 50 hours we now just clean out at the end of the year. I don’t even know if we actually need to do that at all because they are capped off and not being used.
We have had this issue bad with certain barley varieties and I have always figured that it was not enough air presureizing the tank,just didn't know the correct way to fix it. Glad u posted this and will do the same on our drill.We always put seed in the front tank and out the top shoot,and the air preasure guage for front tank is never in the right position unless all the air is directed to the top shoot. Is there something online where this fix is explained even better with more pics?

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post #17 of 31 (permalink) Old 05-19-2019, 11:19 PM
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Below are pics of how to pressurize the 1910 Tanks similar to the AP2 (dual fan carts). A couple different ways to mount the valves shown.
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post #18 of 31 (permalink) Old 05-20-2019, 08:53 AM
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I don't think I have an air leak, all 3 gauges are in the green and theres a violent blast of air when u release the lid latch.
Your dust theory may be correct , seems to be alot just under the agitator. I'm wondering if the agitator should be thrown in the bush with all the other ideas that worked on a computer screen. If you watch the agitator work , it basically blocks off about 60% of the throat going down to the meters. And the wiggling action of the agitator may actually pack dusty material against the edges?
I'm running single shoot but every 30 min or so i shut off fert for a pass and watch the blockage monitor. The turn the seed off and go over the same area with fert. Earlier in the day, I realized run 6 was blocked constantly so I closed half width and was patching in misses with runs 123 open. Thats when i realized run 1 would bridge for 5-45 seconds at random and clear itself. So i can't just stop,jump out and crank handle and to see if its ok. Have to watch it for a while,while it's working.
I've given up on the rear tank for now. I'm using the middle tank and it's been good. I have to stop and fill every hour, but thats better than dealing with misses. I have only had this problem with the rear tank, was wondering if the shape of it had something to do with this problem.
Thanks for the responses
Maver, IF YOUR 1910 is a double shoot also check your air flow control dampner . When I rebuilt my unit with stainless I also notice the screw handle was partial seized and didn't turn up or down on the thread properly. So what was happening I didn't get proper air flow between the the top and bottom pipes. Trouble is you cant see what is happening unless you take it a part. Also I am curious what bushel weight of oats you are seeding. I seed 48 lb oats and drop it from the back tank down the top pipes with no problem after the rebuild.
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post #19 of 31 (permalink) Old 05-20-2019, 11:02 AM
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Put some TALC powder in there. Just like we do in the row units planting sorghum. It would be easy to try and a cheap fix.
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post #20 of 31 (permalink) Old 05-20-2019, 06:44 PM Thread Starter
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My cart is single shoot. I'm seeding barley, the oats was last year . The barley is heavy, kinda dusty, and treated.

My half width handles do require a hammer, and they are slightly twisted inside. The outside runs that bridged were probably 90-95% open. Not sure if that is enough to cause bridging. Stainless meter boxes for next year. Can't believe jd doesn't use stainless!
My presurization hose goes into the side of my tank and up the ladder to the top of the tank where it is open, like in granite smashers pics. No valve though. Cobra1970 do you have 2 air lines going to each tank? (The factor installed and the one that you put in)

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