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G226 Power Unit Radiator Replacement

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DFCI View Drop Down
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Joined: 29 Sep 2023
Location: Willcox AZ
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    Posted: 29 Sep 2023 at 6:01pm
Afternoon All,

My dad just recently purchased a well rig with the Allis Chalmers G226 Power Unit as the power source.
We are trying to get the rig up and functional and need a replacement radiator.  The Engine block # is 17-74960-V.  From my research online, it does not look like the D17 Radiators are a direct fit to this unit from what I can find.
Is there a viable solution for a replacement? 

Any information leading me in the correct direction would be greatly appreciated.

Thank you for your Help
Bill
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steve(ill) View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote steve(ill) Quote  Post ReplyReply Direct Link To This Post Posted: 29 Sep 2023 at 9:53pm
does it look like a WD45 radiator ?  ( tractor prior to D17)


Like them all, but love the "B"s.
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Post Options Post Options   Thanks (0) Thanks(0)   Quote DieselBumpkin Quote  Post ReplyReply Direct Link To This Post Posted: 29 Sep 2023 at 10:07pm
How much of the old radiator do you have left? I just had a radiator for a HD6 recored and had the bottom tank replaced. What stayed was the top tank and mounting metal. It cost me $1100 earlier this year. The list price on a new one online from a few places was over double that. I had to go to a real radiator shop, and they had to look up the core and tanks in some catalogs going back to the 1980s. The core disappeared after the early '90s, but after some calls, the guy at the shop was able to find a brand new core. They had my radiator recored in under a week. That's a "recored" in my book. My guess is that the drawings or inventory details were in some old cabinet in a warehouse, and give it another ten years, anyone who knows how to make this job happen will be in a nursing home or dead.
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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: 30 Sep 2023 at 10:36am
I had a HD5B crawler with a 2-71 Detroit  and bad radiator , found the radiator from a 47 Chev Delux fit the supports in crawler and position , used it for a few weeks until i found a used HD5 radiator . So unless your going for everything correct I would just look for modern radiator to work or fit . 
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 DFCI Quote  Post ReplyReply Direct Link To This Post Posted: 02 Oct 2023 at 10:39am
Morning everyone,
Thanks for your responses.  I appreciate them very much.
To answer a couple of the questions, I have the complete radiator that drips pretty bad when full. According to the tag that is still on it, it is a Perfex Corporation Milwaukee. 
I am not worried about keeping it stock,  I just didn't want to spend a bunch of money to have it rebuilt if there was something that would bolt back up without a bunch of modifications to make it work.
I have found radiators for D17's for around $400-$600 but have read they are not a perfect fit but work.  
 Sounds like the easiest would probably just to opt for a D17 radiator.

Thanks again for your help.
Bill
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Post Options Post Options   Thanks (0) Thanks(0)   Quote DFCI Quote  Post ReplyReply Direct Link To This Post Posted: 02 Oct 2023 at 10:52am
Steve(Ill),

The top of the radiator I have looks like the one you have pictured.  Where the radiator hoses connect are different though.  But it does look like the engine cover would fit properly over the radiator.
It could be the correct one.  I think this unit has been Frankensteined.  I found out the installed carburetor wasn't the correct one either.  

Thanks,
Bill
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Post Options Post Options   Thanks (0) Thanks(0)   Quote fjdrill Quote  Post ReplyReply Direct Link To This Post Posted: 02 Oct 2023 at 6:31pm
I've had good luck with radiatorsrus on eBay. They give the dimensions for the radiators. Haven't had much luck having ones repaired lately. What rig are you working on?

Edited by fjdrill - 02 Oct 2023 at 6:33pm
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Post Options Post Options   Thanks (0) Thanks(0)   Quote DFCI Quote  Post ReplyReply Direct Link To This Post Posted: 02 Oct 2023 at 8:01pm
@fjdrill
We are working on a bucyrus erie 22w.  The Allis Chalmers is its power source. 
We are going to use it mainly to rehab existing wells in our area. Brush and bail. 
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Gary Quote  Post ReplyReply Direct Link To This Post Posted: 03 Oct 2023 at 5:46am

Link to Allis Operators Manual for G226, picture of P/U on cover.


https://www.amazon.ca/Allis-Chalmers-G-226-Operators-manual/dp/B00DWHAT8Q
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Post Options Post Options   Thanks (0) Thanks(0)   Quote DieselBumpkin Quote  Post ReplyReply Direct Link To This Post Posted: 03 Oct 2023 at 2:46pm
You could also look at the Summit Racing catalog. There are many, many radiators listed, and you might be able to find something that works great on a budget.
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Post Options Post Options   Thanks (0) Thanks(0)   Quote DFCI Quote  Post ReplyReply Direct Link To This Post Posted: 04 Oct 2023 at 1:28pm
Thanks cor all the info. 
We just ordered a radiator that is supposed to fit the D17. We will just make the necessary modifications to make it work. It’s just a power unit for the rig. 

Thanks again 
Bill
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Post Options Post Options   Thanks (0) Thanks(0)   Quote JoeO(CMO) Quote  Post ReplyReply Direct Link To This Post Posted: 18 Oct 2023 at 9:05pm
I have one i have been holding onto,
Call-   five seven three, three five three, seven three two nine.




Edited by JoeO(CMO) - 18 Oct 2023 at 9:12pm
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Post Options Post Options   Thanks (0) Thanks(0)   Quote DieselBumpkin Quote  Post ReplyReply Direct Link To This Post Posted: 20 Oct 2023 at 7:50pm
If this is a well rig that you're operating and the engine is running most/all the time, do you have anything that trips a fuel cutoff if the engine overheats or runs low on oil, or anything like that?
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