Search for HD4 Serial numbers
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=165424
Printed Date: 28 Nov 2025 at 5:35am
Software Version: Web Wiz Forums 11.10 - http://www.webwizforums.com
Topic: Search for HD4 Serial numbers
Posted By: stileseverett
Subject: Search for HD4 Serial numbers
Date Posted: 30 Oct 2019 at 5:14am
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The old AC HD4 appears to be a model from somewhere in the 70's. One source indicated the numbers would be on the lower frame on the front of the dozer, but were not. Have been unable to find a placard or numbers anywhere else. Would numbers from the engine give a clue as to the date of manufacture?
Everett Stiles Macon County North Carolina
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Replies:
Posted By: Randaleky
Date Posted: 30 Oct 2019 at 7:48am
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Check the front of the torque tube just behind the engine oil filter . mine is on the end where the engine block and tube connect. should say HD4 _____ Most are just in front of the front grill on flat frame in the middle of it.
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Posted By: stileseverett
Date Posted: 30 Oct 2019 at 2:43pm
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Thanks very much. I'll go look!
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Posted By: Randaleky
Date Posted: 30 Oct 2019 at 6:37pm
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ok. you are welcome. also welcome to the forum. There are a lot of knowledgeable people on here. can you send some pics of your HD4 ?
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Posted By: Tracy Martin TN
Date Posted: 30 Oct 2019 at 7:30pm
Randal, sent you a pm. Tracy
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No greater gift than healthy grandkids!
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Posted By: Coke-in-MN
Date Posted: 02 Nov 2019 at 4:41pm
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My HD4 has the number on the front flat part of frame ahead of the grill piece - right side when facing fromt of machine - they were partially covered by the metal grill guard or metal plate bolted into front of machine
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Life lesson: If you’re being chased by a lion, you’re on a horse, to the left of you is a giraffe and on the right is a unicorn, what do you do? You stop drinking and get off the carousel.
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Posted By: stileseverett
Date Posted: 17 Nov 2019 at 8:29pm
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Randeleky: Just as you say: On the top of the front frame under the grill. Prithee, where do I look for the year of manufacture. Thanks a lot!
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Posted By: pinball
Date Posted: 17 Nov 2019 at 10:22pm
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just go on the net . and type in allis chalmers h4 for a search. you will find out all the specks and serial numbers.
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