Allis B Hydraulics
Printed From: Unofficial Allis
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=148858
Printed Date: 18 Jul 2025 at 8:03pm
Software Version: Web Wiz Forums 11.10 - http://www.webwizforums.com
Topic: Allis B Hydraulics
Posted By: cpg
Subject: Allis B Hydraulics
Date Posted: 27 Mar 2018 at 7:23am
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Have a question about the hydraulic pump on my B built into the pto/belt housing assembly. Right now the little ram is off as it didn't come with one so it just has the hose end left open; never used it before so I have never had reason to bother with it. I turned on my pto and it just pumps fluid out the hose even with the handle down in the drop position but doesn't seem to be with much pressure. Do I just need to cap the port to get it to have some back pressure to recirculate into the housing or is the valve not closing all the way and I need to un-stick something? I don't need the lift on that tractor so I am fine with capping the port; I just didin't want to cap it if the problem is a stuck valve so I am putting dead pressure on the pump all the time but it doesn't seem to come out with much pressure which is where I wasn't sure on the needing some resistance to recirculate idea. I just want to be able to run the pto and pulley without pumping all the fluid out so I can use it to run my corn grinder display at shows. Thanks for any help. |
Replies:
Posted By: BEK
Date Posted: 27 Mar 2018 at 7:43am
I don't have any systems on my B so I removed the hydraulic pump from my PTO. It was easy. I had some 3/8 aluminum flat stock and manufactured a nice cover plate. Made a gasket and painted it. Really cleaned up the back of the tractor and the best part, no more leaks. I kept the pump just in case.
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Posted By: Leon n/c AR.
Date Posted: 27 Mar 2018 at 8:45am
| If adjustments on control lever is correct you should be able to just put pipe plug on outlet port to seal it and be good. |
Posted By: Gerald J.
Date Posted: 27 Mar 2018 at 9:26am
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There ought to be details on the hydraulics in the shop manual. http://geraldj.networkiowa.com/Trees/Allis-Chalmers-G-B-C-CA-Service.pdf" rel="nofollow - http://geraldj.networkiowa.com/Trees/Allis-Chalmers-G-B-C-CA-Service.pdf Gerald J. |
Posted By: wbecker
Date Posted: 27 Mar 2018 at 11:19am
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The B & C pumps do not circulate. It either pumps pressure to the cylinder, or holds pressure, or lets pressure return to the housing. ------------- Allis B, IB, Low B, G, D10, JD M, 8KCAB, C152 |
Posted By: cpg
Date Posted: 28 Mar 2018 at 9:57am
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Thanks for the info. I will look at the adjustment to see if I can get it to stop and just cap it but if it has to come off from something sticking I may just make one of those plates; that looks really clean. Thanks |