Construction and other equipment - Allis Chalmers D year

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Allis Chalmers D year

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=206293
Printed Date: 16 Apr 2025 at 9:00am
Software Version: Web Wiz Forums 11.10 - http://www.webwizforums.com

Topic: Allis Chalmers D year

Posted By: FiremanJohn
Subject: Allis Chalmers D year
Date Posted: 13 Apr 2025 at 2:32pm

Just wondering if the nice folks with the books can tell me what year D-5099 was built, and where I would find an engine serial number on it? I have seen it is the same engine as the WD and same engine as the WD45. Wondering about the differences. Thank you.

Replies:

Posted By: DiyDave
Date Posted: 13 Apr 2025 at 3:36pm

1957...

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Posted By: DrAllis
Date Posted: 13 Apr 2025 at 4:03pm

Model "D" grader came out in 1949 and would have indeed had a WD tractor engine. By late 1953 the WD-45 was released and so the Model "D" grader got an engine upgrade of about 10 more HP. Then, in the Fall of 1957, when the D-17 tractor was released, I would have assumed the D grader sometime in 1958 probably got the new D-17 engine.