Farm Equipment - serial numbers

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serial numbers

Printed From: Unofficial Allis
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=12899
Printed Date: 31 Jan 2025 at 6:53pm
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Topic: serial numbers

Posted By: arnett
Subject: serial numbers
Date Posted: 24 May 2010 at 7:58pm

Hello. Anyone know what the letters that preceed a serial number on an AC-B mean? Dad just phoned that ours starts with a "P" and I wonnder if he misread it and it might actually be a "B." Thanks in advance for any information. AA

Replies:

Posted By: GlenninPA
Date Posted: 24 May 2010 at 8:04pm

They are preceded by a "B", except in the case of the industrial version after 1945, then it is preceded by an "IB".

Posted By: arnett
Date Posted: 24 May 2010 at 8:06pm

thanks! It must be a "B."

Posted By: CTuckerNWIL
Date Posted: 24 May 2010 at 8:10pm

Like Glenn said the "tractor number" starts with B and that is the model. If it started with CA you would own a CA. The engine serial numbers start with BE or CE.

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http://www.ae-ta.com" rel="nofollow - http://www.ae-ta.com
Lena 1935 WC12xxx, Willie 1951 CA6xx Dad bought new, 1954WD45 PS, 1960 D17 NF

Posted By: arnett
Date Posted: 24 May 2010 at 8:23pm

I just talked to Dad. He said the number he gave me was hand-written in the owners manual under the model number on the inside front cover. The number is "P69990." He thought that was the serial number but he's not sure. He is going to get the serial number off the tractor tomorrow.

Posted By: CTuckerNWIL
Date Posted: 24 May 2010 at 8:27pm

If the tractor number is B69990 it would be a late 1944 model B.

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http://www.ae-ta.com" rel="nofollow - http://www.ae-ta.com
Lena 1935 WC12xxx, Willie 1951 CA6xx Dad bought new, 1954WD45 PS, 1960 D17 NF

Posted By: arnett
Date Posted: 24 May 2010 at 8:35pm

just to confirm, the serial numbers are near the gear shift on the tractor, correct?

Posted By: Dave(inMA)
Date Posted: 24 May 2010 at 8:36pm

Yes, if it's a B.

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WC, CA, D14, WD45

Posted By: arnett
Date Posted: 24 May 2010 at 8:44pm

It is a B. I am pretty sure it is a 1944 and the serial number would confirm that. I have lots of great memories using this tractor as a youth on the family farm and now that we have a small farm of our own, my wife and I want to restore it. The unfortunate part of the story is that it has a cracked engine block that occured about 10 years ago when I was mowing in some heavy grass with a belly mower. I don't even know where to begin with that problem. Any thoughts from the experts on this page would be much appreciated. Thanks, AA