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

Ford 9N, 2N & 8N Discussion Forum
:

starter bolts question

Welcome Guest, Log in or Register
Author 
Pat

08-27-2003 10:08:48




Report to Moderator

I am getting ready to rebuild the starter on my 51 8n. I have read to put nuts on the starter bolts to hold it together while removing it from the engine. They look like 5/16 bolts. Question is, what is the treads size. 5/16 by 18 or 5/16 by 20? would like to have them in my hand before pulling the starter. Thanks for the help.




[Log in to Reply]   [No Email]
PloughNman

08-27-2003 12:58:42




Report to Moderator
 Re: starter bolts question in reply to Pat, 08-27-2003 10:08:48  
Hey Pat-
Yes, 5/16-18 coarse thread bolts (screws?) for the starter. Anything screwed into cast iron is going to be a coarse thread. It's an engineering thing because of the grain structure of cast iron, coarse threads do not strip out as easy, where fine threads would in cast iron. You'll find that the nuts and mating bolts were fine thread (i.e. 5/16-24; 7/16-20; 1/2-20; 5/8-18...etc.) because they are each made of steel, which has a different grain structure. Anyway, always be sure to start a nut or bolt by hand first to prevent cross-threading. If it won't start by hand, the threads are boogered up or dirty or both. Run a tap into bolt holes to clean them up or chase a bolt with a thread die to clean up old paint, dirt, grease, peened thread, or whatever. Nothing worse than being held up because you got a bad thread. HTH

Tim

[Log in to Reply]  [No Email]
Steve(OR)

08-27-2003 13:50:37




Report to Moderator
 Re: Re: starter bolts question in reply to PloughNman, 08-27-2003 12:58:42  
Hmm... Coarse threads only into cast iron. That's my one new thing to learn today. Thanks!



[Log in to Reply]  [No Email]
Dell (WA)

08-27-2003 11:14:01




Report to Moderator
 Re: starter bolts question in reply to Pat, 08-27-2003 10:08:48  
Pat..... ...unlike most of the N-Bolts, the N-Starter bolt is 5/16 COARSE THREAD. But like EvilSteve said, just pull one starter bolt and find the nut size that fits. And BTW Ford calls it a "screw" for some reason 7.18 long..... .Dell



[Log in to Reply]  [No Email]
don b

08-27-2003 12:09:43




Report to Moderator
 Re: Re: starter bolts question in reply to Dell (WA), 08-27-2003 11:14:01  
Dell, if you price the new bolts at N/H,you will see why they call them "screws". don b



[Log in to Reply]  [No Email]
That would make... Evil S

08-27-2003 12:13:46




Report to Moderator
 Re: Re: Re: starter bolts question in reply to don b, 08-27-2003 12:09:43  
... EVERY part they sell a "screw." LOL



[Log in to Reply]  [No Email]
Jim Cox

08-27-2003 11:08:35




Report to Moderator
 Re: starter bolts question in reply to Pat, 08-27-2003 10:08:48  
the ford thru-bolt:

1811091 THRU BOLT 5/16-18x7-1/4.

Put a nut on each after you rebuild it, torque to 8-10 ft pounds, and test with a set of jumper cables. touch the hot cable to a 5/16-24 nut on the starter post so you don't damage the copper threads. You can take the nuts off the thru bolts after you have SEEN it run.

Good luck, and don't be afraid to try a local rebuilder or the New Holland 8N11001R

Jim Cox
Starter rebuilder guy

[Log in to Reply]  [No Email]
Steve(OR)

08-27-2003 10:41:41




Report to Moderator
 Re: starter bolts question in reply to Pat, 08-27-2003 10:08:48  
I didn't think 5/16-20 was a standard size. I believe 5/16-18 would be a coarse thread and 5/16-24 would be a fine thread. There is a metric size that can be mistaken for 5/16-20. I know because I made that mistake at the hardware store last week. Somebody stocked the standard bin with metric bolts and they were very similar.



[Log in to Reply]  [No Email]
Rick H. Ga.

08-27-2003 10:34:50




Report to Moderator
 Re: starter bolts question in reply to Pat, 08-27-2003 10:08:48  
Hi Pat,

I'm not sure about the #18 or #20 on the threads of the starter bolts. Several years ago, I needed the two long starter bolts for my 49 8N. Couldn't find exactly what I needed so I finally bought some 5/16 threaded rod and cut it to the right length x 2. I put two nuts on the end of each and it has worked like a charm for over 20 years. The threaded rod was the same size threads as the old starter bolts. HTH. Rick H. Ga.

[Log in to Reply]  [No Email]
Evil Steve

08-27-2003 10:34:08




Report to Moderator
 Re: starter bolts question in reply to Pat, 08-27-2003 10:08:48  
Pat-

I don't know but you can just take ONE out and size it.



[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