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Allis 715b bushings

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KRAKMT View Drop Down
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Joined: 21 May 2010
Location: MT
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    Posted: 02 Jan 2024 at 10:00am
Finally got my 715b operational again.
Now during the winter months I think I will rebuild the lower bucket pins. The side with the large bolt instead of pin egg shaped the bucket side quite a bit.

Where are people getting pins and weld in bushings?
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Coke-in-MN View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Coke-in-MN Quote  Post ReplyReply Direct Link To This Post Posted: 03 Jan 2024 at 12:17am
I got stress relived shaft stock and made my own , bushings might try McMaster Car or even a bearing house - (look online) As far as work bucket you can try to add a shaft collar the size of pin and weld it onto bucket sides .  
 I made my own from stock and drilled to size on my backhoe buckets that were worn . 
Faith isn't a jump in the dark. It is a walk in the light. Faith is not guessing; it is knowing something.
"Challenges are what make life interesting; overcoming them is what makes life meaningful."
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Post Options Post Options   Thanks (0) Thanks(0)   Quote KRAKMT Quote  Post ReplyReply Direct Link To This Post Posted: 05 Jan 2024 at 8:32am
Do you know the dimensions of the lower pins? I will get those and then try to bushing out from there.
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Post Options Post Options   Thanks (0) Thanks(0)   Quote orangeman Quote  Post ReplyReply Direct Link To This Post Posted: 06 Jan 2024 at 9:17am
KRAKMT: The diameter of the lower bucket pin is 1.995" - 2.001" and the length is 5.780"- 5.810".  These dimensions along with all of the pin and bushing dimensions for the Loader portion are found on page G-3 of the AC 715 Backhoe/Loader Manual dated 12/75. 

The Part Number for the original AC Service Manual from which the above was excerpted is 9003463.

Good Luck with this project.  The AC 715 is a  great machine!  

~ Orangeman

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Post Options Post Options   Thanks (0) Thanks(0)   Quote KRAKMT Quote  Post ReplyReply Direct Link To This Post Posted: 07 Jan 2024 at 9:25am
Thanks for the help from you both.
This place looks to have stressproof stock.
https://www.speedymetals.com/p-1597-2-rd-stressproof-or-equivalent-cold-finished.aspx

I would like to do the pins on the dipper where the dog bone attaches to the loader arm.

Can either of you give me that pin size?
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Post Options Post Options   Thanks (0) Thanks(0)   Quote orangeman Quote  Post ReplyReply Direct Link To This Post Posted: 07 Jan 2024 at 11:19am
KRAKT: Yes can supply those too, send me a PM with an email - will photo the Service Page with all the Pin and Bushing dimensions.  ~ Orangeman
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Post Options Post Options   Thanks (0) Thanks(0)   Quote KRAKMT Quote  Post ReplyReply Direct Link To This Post Posted: 18 May 2024 at 7:51am
Back working on pin rebuild.
Took me a couple months to get a windshield installed given the weather.

Would welding a 5ft stick of 2” Dom into the loader bucket pins- ensuring straight and square as bushings and then using 1 1/2 pins. Would this work? It would avoid the cost of line boring.
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Post Options Post Options   Thanks (0) Thanks(0)   Quote orangeman Quote  Post ReplyReply Direct Link To This Post Posted: 18 May 2024 at 2:41pm
I would get an  estimate to have the egged out hole in the boom built up and line bored for a new bushing and be done with it. 

Once done, and if maintained you would not likely be back into it in our lifetime.  My .02C fwiw.  ~ Orangeman


Edited by orangeman - 18 May 2024 at 2:41pm
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Post Options Post Options   Thanks (0) Thanks(0)   Quote KRAKMT Quote  Post ReplyReply Direct Link To This Post Posted: 18 May 2024 at 5:37pm
When I stopped and talked to local shop on line boring the estimate I received was - “ that would be a lot”

Not many other options- I might have found one 3 hours a way. But using dom and going to 1 1/2 pins might also last me a lifetime.
Internet says a stick is $95 plus shipping.
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Coke-in-MN Quote  Post ReplyReply Direct Link To This Post Posted: 18 May 2024 at 6:01pm
Cost on steel is almost beyond owning anything now . Son was buying pin material for his snow plows and has tripled for a length of full stick and a cutting charge added if he doesn't want a 20' length . 
 Other thing one could do is buy round stock already with hole , then welding that onto what you need after boring it to accept bushing in size you want .  
A idea of DOM tube -
https://www.metalsdepot.com/steel-products/steel-round-tube-dom
Faith isn't a jump in the dark. It is a walk in the light. Faith is not guessing; it is knowing something.
"Challenges are what make life interesting; overcoming them is what makes life meaningful."
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Post Options Post Options   Thanks (0) Thanks(0)   Quote orangeman Quote  Post ReplyReply Direct Link To This Post Posted: 19 May 2024 at 6:19am
There is a reason why when the original design was evaluated that a 2" pin was specified for the boom to loader bucket.  The solutions to undertake an egged out hole are multiple.  In the end - what needs to be decided is a repair solution relative to how the machine will be used and how it is to operate and importantly how much you want to sink into a machine that's approaching 50 years given current economics.  It might also be worthwhile to consider serviceability of the bucket to the boom geometry when using a smaller 1.50" pin and whether that will withstand the dead load and stress moment on the PIN stock selected.  A pin that is bent because it is undersized can be a pain in the _ss when there is a need to remove it - fwiw. 

The article that follows is also worth a read relative to what you are considering - see link here:https://weldingweb.com/vbb/threads/707524-Backhoe-pinss

HTH's ~ Orangeman


Edited by orangeman - 19 May 2024 at 7:32am
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