AC plow Model??
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Category: Allis Chalmers
Forum Name: Farm Equipment
Forum Description: everything about Allis-Chalmers farm equipment
URL: https://www.allischalmers.com/forum/forum_posts.asp?TID=113447
Printed Date: 15 Sep 2025 at 3:10am
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Topic: AC plow Model??
Posted By: Bob J Wi
Subject: AC plow Model??
Date Posted: 17 Oct 2015 at 7:35pm
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Found this plow today and tried it out in our AC club plow days. It has a hydraulic reset system. Is it reliable? What model is it? The coulters are rubber mounted. One fell off while plowing. Seems like they are glued to the frame. Are parts availiable? Thanks for any help.  
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Replies:
Posted By: Gerald J.
Date Posted: 17 Oct 2015 at 8:49pm
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With hydraulic reset, probably a 2000 or 3000 monoframe plow. Looks a lot like my 2000 monoframe plow. Gerald J. |
Posted By: Calvin Schmidt
Date Posted: 17 Oct 2015 at 8:54pm
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2000 Monoframe 3000 is an on land hitch. Have a 7 furrow 3000 ------------- Nothing is impossible if it is properly financed |
Posted By: jiminnd
Date Posted: 17 Oct 2015 at 10:06pm
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2000 mono frame, also available in spring trip, I have 3 of them in various conditions. ------------- 1945 C, 1949 WF and WD, 1981 185, 1982 8030, unknown D14(nonrunner) |
Posted By: SteveM C/IL
Date Posted: 17 Oct 2015 at 10:36pm
| Them first 4 coverboards really do a job in trash. |
Posted By: DrAllis
Date Posted: 18 Oct 2015 at 7:42am
| Non-stop plowing with those auto-reset bottoms and rubber spring coulters. Make sure the accumulator is charged properly with nitrogen and then set your oil pressure to 800 psi and adjust it from there to keep bottoms from needlessly tripping back. |
Posted By: Bob J Wi
Date Posted: 18 Oct 2015 at 9:44am
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Now I am confused. The round can on the frame has nitrogen in it. Where do I get the nitrogen filled up if it leaks? The pressure of the hydraulic hose provides the force on the plow trip mechanism, at 800 psi? Seems like that little can of nitrogen could explode. I think I will pass on this plow. Seems to dangerous. |
Posted By: Gerald J.
Date Posted: 18 Oct 2015 at 10:43am
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There were not many options for coulters in the plow bottoms book I have. The rubber ones probably are the least likely to work for decades without coming apart. My 2000 4x18 is spring trip I guess, I've never tripped a bottom because I got the boulders out of the field while plowing with a smaller plow. I haven't used a plow in about 18 years. The operator's manual tells how to fill the nitrogen reservoir. It doesn't use tractor hydraulics for resetting the bottoms. It uses tractor hydraulics to operate a cylinder on the furrow wheel at the back to raise and lower the plow and the three point for the front end. Gerald J. |
Posted By: HudCo
Date Posted: 18 Oct 2015 at 11:14am
| that little can is pretty common on hyd systems it is used to maintian a constant hyd presure 800psi is preety small |
Posted By: Bob J Wi
Date Posted: 18 Oct 2015 at 2:33pm
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One last thought. There is quick disconnect hydraulic coupler on the nitrogen can. What is that for? |
Posted By: 243Hunter
Date Posted: 18 Oct 2015 at 4:27pm
| That hose to the accumulator ( the nitrogen can) is used to add pressure ie the 800psi when u get it out for the year. That pressure in the can makes the hydraulic cylinders reset the bottoms after they trip. The system leakes down after some time sitting. You plug the line ino the tractor then use the remote to add pressure then unhook the line from ttractor. The accumulator tank is common in alot of hydraulic systems and are safe. The 2000 series are a pretty good plow |
Posted By: DrAllis
Date Posted: 18 Oct 2015 at 4:48pm
| The tractors hydraulics ARE used to establish hydraulic line pressure for all of the plow bottoms. That's what that hydraulic connection is for......to make the 800 psi starting pressure. Some soils plow harder and will require more pressure that that. The idea is to not use anymore pressure than is necessary for your soil types and ground speeds. Those accumulators are quite reliable, but remember, that plow is possibly 40 years old. The plow bottom linkage allows the plow bottom the trip back and then up to clear the rock obstruction due to the linkages geometry. Competitors plows caused the share point to go down lower as it tripped back. |
Posted By: Bob J Wi
Date Posted: 18 Oct 2015 at 5:15pm
| Thanks for all of the info. |
Posted By: DiyDave
Date Posted: 18 Oct 2015 at 6:00pm
| Yes, the accumulator is kinda like the air in a cold water tank bag. It limits the pressure to 800 PSI. Without it, normal pressure is about 1500 PSI. No real danger other than the fact that it IS a pressure vessel. It should be checked visually for deep rust pits or cracks, then charged. Reason they use Nitrogen is that it is largely inert, and does not contain water, like compressed air, and the nitrogen that is supplied commercially is supplied in higher pressures, in the storage tanks. Any place that does shock or tire work should be able to sell service or point you in the right direction, as to where to get the Nitrogen, in question |
Posted By: Mnfarmboy
Date Posted: 18 Oct 2015 at 7:28pm
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A store that sells welding supplies and gasses will have nitrogen gas in a cylinder. Cylinders have at least 2000# of pressure in them. A regulator and hose will be needed to charge the tank. Dave |
Posted By: Jim Hancock
Date Posted: 18 Oct 2015 at 9:10pm
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Hi Bob. We ran a 5x16 plow like this for years behind our XT3 without any problem and made a world of difference in the rock patches and we quit pickin' rock after that. It was pretty nice to plow with. If I had a need for it, I'd be all over that! ------------- How blessed we are by HIS GRACE! |