Posted by mattofvinings on July 24, 2009 at 20:15:27 from (198.208.159.20):
In Reply to: 806 front end threads posted by Mazemeister on July 23, 2009 at 17:45:12:
Really....by the time you get done drilling oversize and tapping for a helicoil, you could probably just go up to the next coarse thread size.
IMHO there are two options that stand out in my mind amongst "a thousand ways to skin a cat".
1. Examine the bolster casting to see if you could drill and tap existing threads deeper, approx 1 diameter's worth of new threads should be sufficient. Two diameters' worth of new threads would be excellent.
2. Drill and tap oversize as above. Best to study the thread charts to make sure the next pilot drill will "cleanup" the major diameter of the existing threads.
To do either job with quality and reliability I would want the bolster casting out of the tractor and setup on a milling machine or radial drill press.
This post was edited by mattofvinings at 20:19:57 07/24/09.
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 ]
Today's Featured Article - Box Plow Blues - by Tom Schwarz. One of the first implements most tractor owners obtain is the box plow. For very little money, this piece of equipment promises to plow and flatten any hill or vale on your ranch road or farm. At least that's what I thought! As simple as a box plow appears, it can be rather challenging to make work correctly. In our sandy soils of Florida, traction is king. You can never have wide enough tires or heavy enough weights to get all the traction you want … unless you own a monster tractor. U
... [Read Article]
Latest Ad:
Oliver 550 Diesel runs like a watch three point hitch pto engine gone threw about two hundred hours ago nice clean tractor
[More Ads]
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.