Posted by jfharper on November 30, 2012 at 20:49:47 from (173.255.107.30):
The key on my front mount hydraulic pump (3/4" shaft) sheared off and I think it was because the key seat on the mechanical element (drive shaft) has a larger height. The key was a square key, 3/16" x 3/16" x 7/8" (WxHxL). I think the key seat on the drive shaft allowed the key to work itself out until the key sheared off. The shaft on the pump shows a couple chips where the key seat set into...hopefully it is OK.
I was thinking of just getting some key stock that was rectangular, like 1/2" x 3/16", cutting the length I need and then grinding down the height so the key cannot work itself out of the pump shaft key seat.
Question is, should I go with carbon steel or stainless? I want to go hard enough on the steel to handle the torque, but also allow for shearing to avoid damaging the pump shaft if it comes to it. Anyone know or have a recommendation?
My pump is a 1.95 cu in displacement pump, 2300 PSI peak and I have a pressure relief on my valve set to 2150 psi. My tractor is a massey 205 industrial...I have no backhoe, just a 200 davis front loader and 3 pt rear implement with rams for tilting and such. TIA
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 - History of the Nuffield Tractor - by Anthony West. The Nuffield tractor story started in early 1945. The British government still reeling from the effects of the war on the economy, approached the Nuffield organization to see if they would design and build an "ALL NEW" British built wheeled tractor, suitable for both British and world farming.
... [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.