D15 Industrial mods
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=187581
Printed Date: 10 Sep 2025 at 7:53am
Software Version: Web Wiz Forums 11.10 - http://www.webwizforums.com
Topic: D15 Industrial mods
Posted By: ster1
Subject: D15 Industrial mods
Date Posted: 10 Apr 2022 at 8:18am
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Hi folks, Something I’ve been mulling over doing to my D15, and looking for thoughts on it. It’s a regular D15 gasser with a front loader. I wish I had a backhoe but I don’t. Anyway, I’m thinking of doing 2 mods to it, one would be adding quick attach to the front so that I can use Bobcat attachments, and the other (closely related) would be adding an aux hydraulic port up front, again with quick connects. The quick attach plate would require some fabricating, and I’m fine with that, no biggie there, and it wouldn’t even be very expensive. I think I can get it done for under 500 bucks. The aux hydraulics though might be a little spendy. I understand that pump is good for 10-12 gpm, at best, which is fine for the lower flow stuff like post hole augers and log splitters. It’s not good enough for the higher flow attachments like mowers and whatnot, but I can’t imagine a high flow attachment I would want to put up there. So I’m thinking the 10-12 is probably fine. Assuming that’s true, I would need to either add a spool to the existing valve (or more likely replace the existing valve with a 3 spool), and add some hoses and fittings, most of that I already have. I think I can get that done pretty cheaply too. I think I’m looking at under a grand to make the old D15 able to use Bobcat attachments up front. What do you think about all this, is it crazy? What does that sort of thing do to the value of an old D15, if it’s done right, not all half-ass and crappy? |
Replies:
Posted By: DrAllis
Date Posted: 10 Apr 2022 at 8:33am
| Probably will add to the value for someone else who has a need for the same attachments that you do. But, for anyone else who doesn't, not worth one penny more ?? |
Posted By: desertjoe
Date Posted: 10 Apr 2022 at 9:38am
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HEY ster1,,,,first, i do not understand what you mean by "quick attach" for your project. I have a D14 Industrial with front loader/ Backhoe and when I was rebuilding it, I removed the loader and the backhoe and distinctly remember ,,,removing the loader was a BFJ and re-installing and lining it up was an even Bigger job,,!! Also, my D14 has an additional pump mounted in front and driven off the crankshaft,,,,? Good luck on your project and keep us updated with pics,,,,,
 |
Posted By: ster1
Date Posted: 10 Apr 2022 at 5:15pm
| Quick attach refers to attachment adaptors that are pretty common among skid steers. It would involve welding a plate to the bucket and a coupler to the front of the loader, and a bit of fabricating to make it all work. I took a closer look at the existing spool valve, and I don’t see a return. I’m wondering if the return goes directly into the tank through the mount. I’ve never seen that kind of valve before. I have to do a bit more homework there. Yeah the only pump is mounted to the front of the crank. I’m sure some have a pump driven off an accessory pad, or even the trans. Mine is just right in front. I don’t plan on taking the loader off :). Of course, now that I’ve said that, I’m more than likely going to get stuck doing it for some reason. |
Posted By: DrAllis
Date Posted: 10 Apr 2022 at 6:33pm
| Return on a 400 A-C loader is a 90 degree 3/4" molded hose from the bottom of the valve to the left tower/oil tank. |
Posted By: AC720Man
Date Posted: 12 Apr 2022 at 9:23am
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I purchased a quick attach from ATI for my 460 loader. It was a $1,500 investment but I am looking forward to using my skid steer attachments. I will never get my money back if I ever sell the tractor but I didn’t do it to make money, it’s totally for my benefit. The ATI is a very good built unit made specifically for the AC loaders. ------------- 1968 B-208, 1976 720 (2 of them)Danco brush hog, single bottom plow,52" snow thrower, belly mower,rear tine tiller, rear blade, front blade, 57"sickle bar,1983 917 hydro, 1968 7hp sno-bee, 1968 190XTD |
Posted By: steve(ill)
Date Posted: 12 Apr 2022 at 12:37pm
A 'quick attach " looks something like this and PERMANENTLY mounts to a loader frame or bobcat with the standard bucket pins...... Then you MODIFY the bucket, post hole digger, mower deck, etc so that it will "mount" to this frame.. Normally the bucket or other will have a 45 degree plate and the top that you drive under and LIFT UP and it is then hanging on this FRAME.. You then have two pins that drop in at the bottom to retain the bucket / post hole digger / mower................ bucket is pretty standard, but for the post hole digger or mower or ??? You need POWER... So you can use your tractor hydraulics, but you need a hydraulic MOTOR to take the place of the pto shaft for driving the implement. ------------- Like them all, but love the "B"s. |
Posted By: steve(ill)
Date Posted: 12 Apr 2022 at 12:43pm
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The boy has an "attachment" like this that hangs on the above FRAME... This "attachment" has a hydraulic motor that drives a PTO shaft out to 3 point arms ... This allows you to mount a mower, tiller, post hole digger that you might use on a "tractor rear 3 point" to now be mounted to the FRONT END LOADER FRAME and use hydraulics to drive the FRONT pto shaft. This is on a 70 HP BOBCAT and he has a 7 ft bushhog mower that we modified a little to mount on the 3 point arms.. He can use it to raise up 10 ft or lower to the ground for chopping brush and small trees.  ------------- Like them all, but love the "B"s. |
Posted By: LaJaMe
Date Posted: 12 Apr 2022 at 6:36pm
| purchased a D15 with an industrial loader model 200 with the front pump. 15 did not run. Decided to switch it to a D17 ser 2. Had to extend frame back to the 17 axle. In the process, we put on a BObcat quick tach plate. We had to pry it into place. ( not that bad). Best thing we ever did. Among other things, the main use is for moving 1000lb round bales. ps--could not find anything on a model 200 until we realized it was industrial model. Smiling everytime we use it!!!! |
Posted By: elec
Date Posted: 12 Apr 2022 at 8:35pm
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Hey Ster1, I did that to my D15 and I absolutely love it. I use it for my hay grapple with my 3-spool valve. I did the whole thing for under $800. Paid for itself the first hay season I used it, as it made it so much easier to move the hay! |