That was back during the production period of these tractors that they "upgraded" to the donuts. The donuts were the best they had until the oval filter you mention. I got tired of changing the donuts and bought an aftermarket filter upgrade. It contains a big oval filter and a spacer plate. I have a 504 diesel with a Koyker loader and a fresh 17 GPM pump along with the 4.5 GPM hitch pump. Even with fresh donuts (14 GPM flow when new), my pumps sounded like they were cavitating and they were. The Allied Precision kit ELIMINATED my hydraulic issues. I also bought a spare filter. After a month or so, my pumps were squaling again... Changed the filter and have not looked back. Think the oval filter caught more debris than the donuts and filled quickly. This filter has been on about 8 months and is now restricted yet.
Donuts vs. Large Oval
Birdseye view of Donuts vs. Large Oval
Donut Assembly vs. Large Oval
Whats this?
Gasket failure of donut filter housing.
Installed
Finished!
Link to Allied Precision: Best investment you can make for your 504.
Price includes spacer, bolts, studs, filter, and two gaskets. Only one
is required for a filter change (included with new filter).
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 - Field Modifications (Sins of the Farmer) - by Staff. Picture a new Chevrolet driving down the street without it's grill, right fender and trunk lid. Imagine a crude hole made in the hood to accommodate a new taller air cleaner, the fender wells cut away to make way for larger tires, and half of a sliding glass door used to replace the windshield. Top that off with an old set of '36 Ford headlight shells bolted to the hood. Pretty unlikely for a car... but for a tractor, this is pretty normal. It seems that more often than not they a
... [Read Article]
Latest Ad:
Sell 1958 Hi-Altitude Massey Fergerson tractor, original condition. three point hitch pto engine, Runs well, photos available upon request
[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.