Construction and other equipment - Allis 715b bushings

Print Page | Close Window

Allis 715b bushings

Printed From: Unofficial Allis
Category: Allis Chalmers
Forum Name: Construction and other equipment
Forum Description: everything else with orange (or yellow) paint
URL: https://www.allischalmers.com/forum/forum_posts.asp?TID=199015
Printed Date: 21 May 2024 at 4:50am
Software Version: Web Wiz Forums 11.10 - http://www.webwizforums.com

Topic: Allis 715b bushings

Posted By: KRAKMT
Subject: Allis 715b bushings
Date 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?

Replies:

Posted By: Coke-in-MN
Date 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."

Posted By: KRAKMT
Date 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.

Posted By: orangeman
Date 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

Posted By: KRAKMT
Date 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" rel="nofollow - 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?

Posted By: orangeman
Date 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

Posted By: KRAKMT
Date 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.

Posted By: orangeman
Date 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

Posted By: KRAKMT
Date 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.

Posted By: Coke-in-MN
Date 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" rel="nofollow - 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."

Posted By: orangeman
Date 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" rel="nofollow - https://weldingweb.com/vbb/threads/707524-Backhoe-pinss

HTH's ~ Orangeman