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AC HD 21P Crawler.

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=52806
Printed Date: 19 Apr 2024 at 3:41pm
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Topic: AC HD 21P Crawler.

Posted By: Steve (MT)
Subject: AC HD 21P Crawler.
Date Posted: 29 Jun 2012 at 10:56pm

I am looking for a better set of rails & shoes for my HD 21P crawler. Please let me know what you have for 21 parts. Thanks for your time. (406) 486 5462.

Replies:

Posted By: HD6 Merv
Date Posted: 14 Jul 2012 at 7:32pm

Hi Steve.

FWIW. HD21 and D8H chains are both 9 inch pitch. Many many moons ago when i was young and keen, we took the tracks and rollers off one poor contractors HD20 and put them on his old D8H. He had to lenghten the chains a few links to fit the D8. He also modified the cat roller collars to take the allis rollers and fitted them to the D8.

Was one of these cases of using what you,ve got.

Anyway it all worked. So you should be able to find a set of D8H chains and grousers and fit these to your 21P. might have to add or shorten a link, but well worth looking into. Cheers Merv

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