Welcome! Please use the navigational links to explore our website.
PartsASAP LogoCompany Logo Auction Link (800) 853-2651

Shop Now

   Allis Chalmers Case Farmall IH Ford 8N,9N,2N Ford
   Ferguson John Deere Massey Ferguson Minn. Moline Oliver

Farmall & IHC Tractors Discussion Forum
:

Frame Rail Bolts

Welcome Guest, Log in or Register
Author 
GordoSD

03-08-2008 06:45:33




Report to Moderator

File this under lessons learned. Ya'll know I'm at the last stage of completing an H. I had not removed the frame rails for blasting, filling and reinstall so I thought I'd mop that up today. NOT. Right side, front bolts came out with a little persuasion. Then the two through the engine mounts, both heads twisted off with about 25 lbs of torque. I have an advanced degree in metals, failure analysis, fracture and metal fatigue. Well the analysis of these two bolts shows a 75% corrosion, influenced by overstress fatigue,failure of the remainder under expected load. Rockwell hardness test showed Grade 3 or less bolts. Vibration of the engine likely causing fatigue. Once they began to crack, corrosion doomed the remainder. So they were just plain rusted almost completely through, cheap factory issue. Got one drilled out 29/64 and tapped 1/2 -20NC. After I go to town to get a new 29/64 bit I'll tackle the rest. So much for the good old dot head bolts! However, IF they can hold up under 100 lbs torque coming out, they ought to be good for 50 going in after running a tap in the support and a die around the bolt.

Gordo

[Log in to Reply]   [No Email]
Gauger

03-08-2008 15:33:15




Report to Moderator
 Re: Frame Rail Bolts in reply to GordoSD, 03-08-2008 06:45:33  
I have an interesting situation with the frame rail to bolster bolts on my '54 SH. All 4 on each side are 9/16" NC and not dot head. The book calls for 1/2". The odd part is that the tractor did not appear to have ever been apart so I don't know why these bolts would have been replaced with larger ones. The tapped holes in the bolster are perfect, straight and no slop at all in the threads. ??



[Log in to Reply]  [No Email]
James Williams

03-08-2008 08:07:23




Report to Moderator
 Re: Frame Rail Bolts in reply to GordoSD, 03-08-2008 06:45:33  
As far as grade of bolts,I dont know.But I always thought IH bolts were second to none,Ive restored 8 pre 39 tractors and I dont beleive Ive twisted of a dozen bolts all together

jimmy



[Log in to Reply]  [No Email]
scott rukke

03-08-2008 07:33:39




Report to Moderator
 Re: Frame Rail Bolts in reply to GordoSD, 03-08-2008 06:45:33  
Half of my frame rail bolts broke off when I removed my F-20 rails. A couple had a cross sectional area of about 3/16". I'm glad I removed them because there wasn't much holding the old girl together. I didn't drill any of them though, I welded a nut over what was sticking out and they all screwed out. A couple came out with a pipe wrench. The nut seems to work good but you want it as close to the threaded end as possible.

[Log in to Reply]  [No Email]
RustyFarmall

03-08-2008 07:10:19




Report to Moderator
 Re: Frame Rail Bolts in reply to GordoSD, 03-08-2008 06:45:33  
Very seldom do I put the original dot head bolt back in. I feel that after 50 or 60 years on the job, that bolt deserves to be retired and is probably no longer capable of performing up to par anyhow. I'd much rather see the head of an aftermarket bolt on an old tractor than to see an original bolt that is probably ready to give up the ghost.



[Log in to Reply]  [No Email]
gene bender

03-08-2008 07:09:52




Report to Moderator
 Re: Frame Rail Bolts in reply to GordoSD, 03-08-2008 06:45:33  
You didnt say why you need the new drill bit



[Log in to Reply]  [No Email]
Janicholson

03-08-2008 07:01:35




Report to Moderator
 Re: Frame Rail Bolts in reply to GordoSD, 03-08-2008 06:45:33  
Turn Dot Head look on some Alloy! (my position is that someone will take that fine tractor apart again and find nice parts, instead of a pencil thin cross section, JimN



[Log in to Reply]  [No Email]
GordoSD

03-08-2008 09:06:33




Report to Moderator
 Re: Frame Rail Bolts in reply to Janicholson, 03-08-2008 07:01:35  
The frame rail bolts have a "heavy duty" head on them Much thicker than a standard 1/2 inch bolt. ANyone know a source for them?

Gordo



[Log in to Reply]  [No Email]
ScottyHOMEy

03-08-2008 09:39:31




Report to Moderator
 Re: Frame Rail Bolts in reply to GordoSD, 03-08-2008 09:06:33  
Are these what you're looking for?



[Log in to Reply]  [No Email]
GordoSD

03-08-2008 19:22:43




Report to Moderator
 Re: Frame Rail Bolts in reply to ScottyHOMEy, 03-08-2008 09:39:31  
Yeah, anyone want the other 42? Minimum order 50.

Gordo



[Log in to Reply]  [No Email]
[Options]  [Printer Friendly]  [Posting Help]  [Return to Forum]   [Log in to Reply]

Hop to:


TRACTOR PARTS TRACTOR MANUALS
We sell tractor parts!  We have the parts you need to repair your tractor - the right parts. Our low prices and years of research make us your best choice when you need parts. Shop Online Today. [ About Us ]

Home  |  Forums


Copyright © 1997-2023 Yesterday's Tractor Co.

All Rights Reserved. Reproduction of any part of this website, including design and content, without written permission is strictly prohibited. Trade Marks and Trade Names contained and used in this Website are those of others, and are used in this Website in a descriptive sense to refer to the products of others. Use of this Web site constitutes acceptance of our User Agreement and Privacy Policy

TRADEMARK DISCLAIMER: Tradenames and Trademarks referred to within Yesterday's Tractor Co. products and within the Yesterday's Tractor Co. websites are the property of their respective trademark holders. None of these trademark holders are affiliated with Yesterday's Tractor Co., our products, or our website nor are we sponsored by them. John Deere and its logos are the registered trademarks of the John Deere Corporation. Agco, Agco Allis, White, Massey Ferguson and their logos are the registered trademarks of AGCO Corporation. Case, Case-IH, Farmall, International Harvester, New Holland and their logos are registered trademarks of CNH Global N.V.

Yesterday's Tractors - Antique Tractor Headquarters

Website Accessibility Policy