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HD 7 TRACKS?

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=82858
Printed Date: 29 Jun 2025 at 7:39am
Software Version: Web Wiz Forums 11.10 - http://www.webwizforums.com

Topic: HD 7 TRACKS?

Posted By: AC Mel
Subject: HD 7 TRACKS?
Date Posted: 07 Jan 2014 at 10:36am

Could someone refresh my memory about the size of HD7 track links,yes the old HD7 (as in 7/10/14 vintage)? not HD7G . Were those the same size or compatible with any other ACs?. Most of my undercarriage specs don't go back there. Know of some people looking for some in Ca. if someone has some close by.

Replies:

Posted By: Lee Bradley
Date Posted: 08 Jan 2014 at 12:22am

They are 6.5" pitch, 1 9/16" pin, 2 5/16" bushing and the pins are 8 1/8" long with a 8 3/8" master. I sure you meant 41 not 14.

Posted By: CAL(KS)
Date Posted: 08 Jan 2014 at 4:52am

i think he meant HD7 HD10 and HD14, not July 7 1914 or 1941 as your implying.

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Me -C,U,UC,WC,WD45,190XT,TL-12,145T,HD6G,HD16,HD20

Dad- WD, D17D, D19D, RT100A, 7020, 7080,7580, 2-8550's, 2-S77, HD15

Posted By: AC Mel
Date Posted: 08 Jan 2014 at 9:57am

Thanks guys, yes I was referring to the model HD numbers for the tractor vintage. Lee are those the same tracks being 6.5'' pitch that are used on the HD5/6?

Posted By: Lee Bradley
Date Posted: 08 Jan 2014 at 11:57am

That is the pitch my manual shows but I not sure the rail width is the same.