Farm Equipment - D15 II front axle mess!

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D15 II front axle mess!

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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=8530
Printed Date: 19 Jan 2025 at 9:27am
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Topic: D15 II front axle mess!

Posted By: Dave H
Subject: D15 II front axle mess!
Date Posted: 23 Feb 2010 at 12:39pm

I don't know why I always wind up stepping in poo poo. I got the front end apart on the D 15 II on a resto. Getting down to the nitty gritty, this tractor must have had the front axle worn out or broken and the Series one was used as a replacement. I fgot the first clue when I discovered the replacement front bushing was way bigger than the pivot pin on the axle.

So i have a friend who can make those pins no swet. I can work the diameter of it off the new bushing. The new bushing is for the series II front end and that is what is on the tractor. However now that it is all apart I am wondering about the length of the pin.

Anybody have any experience here. If I have the pin cut to the same length as the Series I, will that do the trick. I know it has to be aligned when welding back on. I just don't know if that series one front axle has the same dimentions (fron the front of the front pivot pin to the rear of the back pivot pin) with just a bigger front pivot pin or what.

If someone had a series II front axle laying around and could give me the length as stated in the ( ) above, it would be christmas come early for me.

thanks in advance

Replies:

Posted By: Tracy Martin TN
Date Posted: 23 Feb 2010 at 4:48pm

Dave, The best thing to do is make pin longer than original. It will give you more wear surface in bushing. You can measure the amount by having front support on tractor and bolt rear radius pivot to it's respective plate. Measure the distance from support back to front edge of axle tube. Then measure depth of hole in support. Add the two together and subtract about .125 for clearance, of pin in hole.I am sure you know importance of having the pivots in alignment. HTH Tracy Martin

Posted By: FredW
Date Posted: 23 Feb 2010 at 5:14pm

Dave, I have one here someplace must be covered with snow will look again in the morning. I am pretty sure it would be the same as early one but not positive either. Fred

Posted By: Dave H
Date Posted: 24 Feb 2010 at 8:35am

Thanks for the feedback.

Tracy, yep noticed tht there is plenty of room in the suport for the pin to go in farther than the factory. good Idea

Fred. I think i have a better idea. lets wait until the mockingbird sings and then measure that front axle. I have decided to have the pin cut 1/2 inch longer while the getting is good and then since the front is all in pieces and the motor is on the stand, I will do the front axle lash up after the front is reassembled which will be a while. I would appreciate it if you keep me in mind and do the mesurement if you sell or install the front end. I plan on giving you a shout about mid summer if I don't hear from you sooner.

Thanka again for the input folks.

Posted By: TerryMN
Date Posted: 24 Feb 2010 at 9:39am

If you got the new bushing from AGCO it is wrong. I just had to cut out the $70 AGCO bushing out of my series II. The Bushin ID is to big.

Posted By: Dave H
Date Posted: 24 Feb 2010 at 12:13pm

Terry

I also noticed a difference in the new bushing vs the old one. The old one that is still installed is much thicker than the new one. It appeared that OD might be correct though. Did you find that it drove in/installed tight.

I was just going to have the machinest that i have a connection with cut the new pin to a diameter that would fit the ID properly.

What was your approach. That new thin walled bushing is surely costly enough that it should never wear, yeh right.

Posted By: Dave H
Date Posted: 24 Feb 2010 at 12:36pm

I just called Sandy Lake and Betty said she would call that ID issue in and get a reply back from AGCO. Maybe 48 hours.

Posted By: Dave H
Date Posted: 24 Feb 2010 at 2:07pm

I guess i just broke the code. The OD is the same for both the light and heavy duty front end. It is just the ID that differs. So my series II sn 133XX has both the light duty front on it an also the light duty bushing installed.

So Betty tells me that the hevy duty front was an option regardless of the sn of the tractor. That is not the way the parts book I have indicates and I was not given any info like that when ordering the bushing from them. Maybe I am learing something with Allis.

I know the light duty pin is 1.250

So it would be nice if they work out a swap with me on the bushing. We will see.

Posted By: TerryMN
Date Posted: 24 Feb 2010 at 2:23pm

Dave,

I welded/ground my pin back to size. I have found a new bushing with to correct ID but Need to have it turned down to the right OD. I do like the Idea of a longer pin. When I put the AGCO Bushing in it fit well on the OD. But I suppose after I fix it I'll have a hard (fun) time wearing it out at 10-20 hrs per year. (LOL)

Posted By: Tracy Martin TN
Date Posted: 24 Feb 2010 at 2:45pm

The front bushing pivot should have clearance in it. If you fit it too tight it can cause problems. The front and rear pivots need to be in alignment, they are weld ons, not machined after welding. About .032 clearance on front should be ok, that way if pins are misaligned slightly, axle housing can freely pivot. If not, it will bind and break something from flexing over time. HTH Tracy Martin