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AC grader identification help
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Adavis View Drop Down
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Joined: 05 Feb 2023
Location: Oakesdale WA
Points: 6 		Post Options Post Options   Thanks (0) Thanks(0)   Quote Adavis Quote  Post ReplyReply Direct Link To This Post Topic: AC grader identification help
    Posted: 05 Feb 2023 at 12:38pm
My father in law inherited an Allis Chalmers grader from his father but has no clue what exactly it is. That hasn't been a problem till now, because it needs a generator and a carb rebuild. It appears that the ID plate is gone so are there any other casting numbers or VIN locations to help determine the year and model? Thanks.
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Adavis View Drop Down
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Joined: 05 Feb 2023
Location: Oakesdale WA
Points: 6 		Post Options Post Options   Thanks (0) Thanks(0)   Quote Adavis Quote  Post ReplyReply Direct Link To This Post Posted: 05 Feb 2023 at 12:41pm
I apologize for the duplicate post. If someone can delete one of them I'd appreciate it.
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DonBC View Drop Down
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Joined: 12 Sep 2009
Location: Courtenay, BC,
Points: 927 		Post Options Post Options   Thanks (0) Thanks(0)   Quote DonBC Quote  Post ReplyReply Direct Link To This Post Posted: 05 Feb 2023 at 1:24pm
Since it has a mag instead of a distributor it is probably an older machine with the 201 cu. in. engine and a 6 volt electrical system. Should be a metal tag on the frame next to where you step onto the machine on the right side. The serial number will tell the year of the machine. There are people on this site that have information on serial numbers and year of fabrication. There are suppliers on this site that can supply carb kits. I use to own a D grader that was slightly newer and had a distributor and coil and I switched it over to 12 V and replaced the 6 V generator with a 12 V alternator. Because I had a coil I had to switch the coil to 12 V.
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Gary View Drop Down
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Joined: 13 Sep 2009
Location: Peterborough,On
Points: 5432 		Post Options Post Options   Thanks (0) Thanks(0)   Quote Gary Quote  Post ReplyReply Direct Link To This Post Posted: 05 Feb 2023 at 3:57pm

I believe that is an earlier Allis Model D:


https://www.youtube.com/watch?v=rJACRUfTnFo&t=123s
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Jim.ME View Drop Down
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Joined: 19 Nov 2016
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Points: 954 		Post Options Post Options   Thanks (0) Thanks(0)   Quote Jim.ME Quote  Post ReplyReply Direct Link To This Post Posted: 05 Feb 2023 at 4:50pm
The little tag on the carburetor should have the carb number on it to use to get a kit.
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DiyDave View Drop Down
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Joined: 11 Sep 2009
Location: Gambrills, MD
Points: 51885 		Post Options Post Options   Thanks (0) Thanks(0)   Quote DiyDave Quote  Post ReplyReply Direct Link To This Post Posted: 05 Feb 2023 at 5:24pm
Its a D model, same engine as  WD tractor...
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Joined: 05 Feb 2023
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Points: 6 		Post Options Post Options   Thanks (0) Thanks(0)   Quote Adavis Quote  Post ReplyReply Direct Link To This Post Posted: 17 Feb 2023 at 10:14am
Thank you all very much for the help. I was expecting an email notification if anyone replied to this thread and one never came so I assumed I'd hit a brick wall. I logged in to do more searching and found several responses. Thank you.

Apparently the "metal tag" that has all the important information regarding the machine is missing.  No clue why someone would remove that, but its gone.  Is there another location where the serial number would/could be located?  If we can just find that number I think it will give us any and all information we would need.


Edited by Adavis - 17 Feb 2023 at 10:32am
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DonBC View Drop Down
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Joined: 12 Sep 2009
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Points: 927 		Post Options Post Options   Thanks (0) Thanks(0)   Quote DonBC Quote  Post ReplyReply Direct Link To This Post Posted: 19 Feb 2023 at 1:04pm
The D grader first started in 1949. I would say yours is mid 50's. The one that I had was a 1959 and had the D17 farm tractor engine which was 226 cu.in. and had a coil and distributor. Yours would have the WD farm tractor engine with 201 cu.in. and a magnito otherwise the remainder of your grader and mine were almost identical except that mine had a cab and was painted orange. One thing that I would check is the rubber boot on the shift lever. If it is damaged or missing it will let rain water into the transmission. I replaced mine with the rubber boot from the CV joint from a front wheel drive car. These are simple machines but require a moderate mechanical ability to work on them.
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Crw View Drop Down
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Joined: 14 Dec 2024
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Points: 3 		Post Options Post Options   Thanks (0) Thanks(0)   Quote Crw Quote  Post ReplyReply Direct Link To This Post Posted: 14 Dec 2024 at 10:34am
I am looking at a AC  D grader, SN D-5332 on one tag and SN 13058 on another tag. Could someone tell me the year and what engine it has. It is a gas engine. Also what option's to convert it to a diesel engine. Thanks
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steve(ill) View Drop Down
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Joined: 11 Sep 2009
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Points: 81691 		Post Options Post Options   Thanks (0) Thanks(0)   Quote steve(ill) Quote  Post ReplyReply Direct Link To This Post Posted: 14 Dec 2024 at 12:47pm
looks like yours might be a  1958

Year ----- SN
1949, 1-480. 
1950, 481-1060. 
1951, 1061-1900. 
1952,1901-3100.
1953, 3101-3605. 
1954, 3606-4310. 
1955, 4311-4770. 
1956, 4771-5039. 
1957, 5040-5300. 
1958, 5301-5540. 
1959, 5541-5739. 
1960, 5740-5858. 
1961, 5859-6114. 
1962, 5986-6114. 
1963, 6115-6243. 
1964  6244-6359. 
1965, 6360-xxxx.


Edited by steve(ill) - 14 Dec 2024 at 12:49pm
Like them all, but love the "B"s.
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steve(ill) View Drop Down
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Joined: 11 Sep 2009
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Points: 81691 		Post Options Post Options   Thanks (0) Thanks(0)   Quote steve(ill) Quote  Post ReplyReply Direct Link To This Post Posted: 14 Dec 2024 at 12:51pm
The GAS model was called a "D" grader... the Diesel option was called a DD grader ... dont know what it would take to "convert" to diesel... Assume you would use an ALLIS engine to match up to the bell housing ?   If other, you would need to modify / adaptor plate / clutch..
Like them all, but love the "B"s.
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Joined: 14 Dec 2024
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Points: 3 		Post Options Post Options   Thanks (0) Thanks(0)   Quote Crw Quote  Post ReplyReply Direct Link To This Post Posted: 14 Dec 2024 at 1:31pm
Do you have info on what engine it should have? Thanks
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Joined: 12 Sep 2009
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Points: 927 		Post Options Post Options   Thanks (0) Thanks(0)   Quote DonBC Quote  Post ReplyReply Direct Link To This Post Posted: 14 Dec 2024 at 5:41pm
It would have the Allis 226 engine. Very common as it was used in the farm tractors, combines and as a power unit for pumps, generators an sawmills. It has been a couple of decades since I sold mine so I don't know who is a good source for parts. There should be reproduction manuals around. They were small but a very capable machine. It look as if it has been well maintained.
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steve(ill) View Drop Down
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Joined: 11 Sep 2009
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Points: 81691 		Post Options Post Options   Thanks (0) Thanks(0)   Quote steve(ill) Quote  Post ReplyReply Direct Link To This Post Posted: 14 Dec 2024 at 9:11pm
D grader engine would be the same as a WD45 farm tractor... 230 diesel or 226 gas options.




Edited by steve(ill) - 14 Dec 2024 at 9:13pm
Like them all, but love the "B"s.
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Crw View Drop Down
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Joined: 14 Dec 2024
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Points: 3 		Post Options Post Options   Thanks (0) Thanks(0)   Quote Crw Quote  Post ReplyReply Direct Link To This Post Posted: 15 Dec 2024 at 7:44am
Thanks for all the info, this helps me to determine how far I want to pursue this.
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Joined: 12 Sep 2009
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Points: 927 		Post Options Post Options   Thanks (0) Thanks(0)   Quote DonBC Quote  Post ReplyReply Direct Link To This Post Posted: 4 hours 48 minutes ago at 9:47pm
I gave all my data and information that I had on D Graders to the new owner a few years when I sold it. If my memory is correct I think that the diesel was a 6 cylinder and slightly longer so the hood and radiator mounting were different.
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