D 15 3 point bleed off
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=46500
Printed Date: 03 Sep 2025 at 5:41pm
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Topic: D 15 3 point bleed off
Posted By: fredv
Subject: D 15 3 point bleed off
Date Posted: 01 Mar 2012 at 6:04pm
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I have a D15 seriesII around 1966 I'm not exactly sure about that but my books and tractor are about 300 miles away put awawy for the winter. I have a problem with the hydraulics bleeding off the three point hitch and I can't hold any implement up for a long period of time. Plays heck of the bottom of my brushhog deck, besides plowing the field, My question is can I fix this myserlf. I am a qualified hydraulic repairman on industrial tools and equiptment but my barn doesn't have an overhead or much for heavy lifting in it. I just need to know how much of the tractor I have to take apart to fix this, I have beenvtold there is a ram inside the body but where and how deep do I have to go and is it possible to do this without specialty tools or should I just suck it up and take it to a shop, any help would be appreciated.
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Replies:
Posted By: norm[ind]
Date Posted: 01 Mar 2012 at 7:12pm
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SEALS COULD BE LEAKING INSIDE OR THE HOSE ALSO CHECK OIL LEVELS
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Posted By: fredv
Date Posted: 01 Mar 2012 at 7:20pm
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I have checked fluid levels for the past two years and it has gotten to the point it has to be dealt with lost no fluid at all so I figure the cylinder is leaking inside or bleeding down internally and I need to know how get to it to fix it. When I bought this in 1985 I rebuilt the gas engine but never got into the body ,everything has worked great till now
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Posted By: Stan R
Date Posted: 01 Mar 2012 at 7:22pm
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Ours had a broken hose inside.
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Posted By: DrAllis
Date Posted: 01 Mar 2012 at 7:22pm
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First, you need to determine if the hydraulic compartment oil level is going down and the tramsission going up. If this is happening, you need a new hose and lift arm ram seals inside the rear end. If both oil levels are staying where they belong, then the problem is the hold valve in the pump itself.
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Posted By: fredv
Date Posted: 01 Mar 2012 at 7:34pm
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ok so both off my oil levels are good and no fluctuations are happening so I guess its the pump,now how big a job is this , are lifts necessary to get to the pump and should this be done at a shop with heavy equiptment and tools or can I gain access by myself
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Posted By: Chalmersbob
Date Posted: 01 Mar 2012 at 10:52pm
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The pump is accessible under the tractor, just ahead of the belt pulley location. Remove the metal plate, 14 or 16 bolts hold it on. Buy a book, and follow it. That will get it out of the torque tube. There are some adjustments that you might want to check first, They are in the book, listed as things to do after you replace the pump. You might find your problem there. I took My pump out to check the cam and followers. Found nothing wrong, reinstalled it, set it up as per the book and everything works now. Bob
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Posted By: Ollie Oliver
Date Posted: 02 Mar 2012 at 7:51am
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I have a 15 that the three point doesn't work at all, should I follow these steps as well? Or try something different seeing as his at least works, and mine just plain don't work?
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Posted By: fredv
Date Posted: 02 Mar 2012 at 7:53am
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Thanks for the info on my problem. I do have all the manuals for my 15 so I'll take your info and make some excuses that I have to go see if I can fix her. Chance to get out of town. Thanks again
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Posted By: jaybmiller
Date Posted: 02 Mar 2012 at 8:11am
umm..might be a good idea to drain the oil first before you start removing the bolts.....
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3 D-14s,A-C forklift, B-112
Kubota BX23S lil' TOOT( The Other Orange Tractor)
Never burn your bridges, unless you can walk on water
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