I agree with mattofvinings, the 4-flute is the best. The spiral type tend to either break or strip. Left hand bits are crucial to bolt extraction. A standard (right hand) will only drive a bolt deeper and tighter. I have had broken bolts come out with only a left hand bit, if you use a transfer punch to center the small puncture wound mark. This only works if the bolt is below the surface. If above, use a die grinder (or dremel), also an end mill chucked in a hand drill works too. Drilling a hole is essential to any technique used. Preferably all the way through, but not into the water jacket!
Blue wrench is the same a ol' victor and the hot wrench. Technically it is an oxy-acetelyene torch. You can try propane (I have and bought an oxy-acetylene set and leased a set of bottles) but it is best left for sweating copper and starting the BBQ grill.
Pale Rider, left hand bits are avaliable as a set. I have been going to get my supervisor to order me a set, but times are tight (maintenance technician, manufacturing). Grainger and MSC have them, but are pricey. I'd go cobalt if the checkbook is deep enough. A grade 8 bolt is tough, but not as tough as a metric 12.9 (none on an M). Also truer words never spoken for "never sieze" or "anti seize". Brass/bronze bolts are overkill but a nice touch. I also tend to over-do projects per my wife.
Finally as to where to heat... Using a propane torch, your flame size is not as concentrated as oxy-acetelyene and a welding tip. Heating around the hole will expand the female threads, helping to relieve pressue on the bolt. Heating the bolt will expand it helping to break the corrosion bond. I'd try both spraying Kroil Oil or CRC Knocker Loose each time and allowing to cool between. It will smoke heavily, but will not burst into flames without a flame.
I'll get off my soap box now, good luck. And use all the advice in this thread, these guys probably have more years experience than I.
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 - Experimental Tractors Article - by Danny Bowes (Dsl). Tractor technology appears to have nearly hit it's pinnacle of development. If you agreed with the subtitle, you are rather mistaken. Quite, actually. As a matter of fact, some of the technology experimented with over 40 years ago makes today's tractor technology seem absolutely stale by comparison. Experimentation, from the most complex assembly to the most simple and mundane component, is as an integral a part of any farm tractor's development
... [Read Article]
Latest Ad:
1964 I-H 140 tractor with cultivators and sidedresser. Starts and runs good. Asking 2650. CALL RON AT 502-319-1952
[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.
