Construction and other equipment - JD 440-IC Track Pad Bolts

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JD 440-IC Track Pad Bolts

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=38624
Printed Date: 24 Jun 2025 at 8:02am
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Topic: JD 440-IC Track Pad Bolts

Posted By: Clay
Subject: JD 440-IC Track Pad Bolts
Date Posted: 09 Oct 2011 at 9:24am

I have been helping a neighbor resurrect a D 440-IC crawler.
Many of the track pads are loose. The heads of the bolts are worn badly and most have been welded to the pads. I tried to remove a couple of bolts but the welds broke. Ended up torching them off.
What is the proper bolt (size and grade) for this machine?

Replies:

Posted By: Coke-in-MN
Date Posted: 09 Oct 2011 at 7:05pm

Track bolts and nuts from a supplier who deals in track bolts . Most times the nuts are held by the track chain side link . Bolts are grade 8+ , as are the nuts. They have a torque spec to make sure they are streached to tension, the heads are also made in such a way they are subject to wear and hold tightness and hold plates to chain link. Loose pads lead to worn bushings and snakey track in short time as the pads keep the chain links alligned with the pin and bushing .

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Faith isn't a jump in the dark. It is a walk in the light. Faith is not guessing; it is knowing something.
"Challenges are what make life interesting; overcoming them is what makes life meaningful."

Posted By: Kipn
Date Posted: 19 Oct 2011 at 3:05pm

I read that JD has track bolts and are reasonable $$. The pad bolt hole has to be good also.

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1961 H3

Posted By: Coke-in-MN
Date Posted: 20 Oct 2011 at 12:00pm

Found this site and it seems the debate there is also over which bolts to use .

For sure you want to find track bolts nad not machine screws or fasteners of regular grade . If I had to use something for quick repair i might use a G-8 bolt and nut

On my FD 5 they are a 9/16 bolt but the new track I bought has the split link instead of master pin so that link uses longer bolts of two different lengths.

http://www.jdcrawlers.com/messageboard/viewtopic.php?p=17250&sid=633428222f8b0ab7d311c9b178258a5d - http://www.jdcrawlers.com/messageboard/viewtopic.php?p=17250&sid=633428222f8b0ab7d311c9b178258a5d

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Faith isn't a jump in the dark. It is a walk in the light. Faith is not guessing; it is knowing something.
"Challenges are what make life interesting; overcoming them is what makes life meaningful."