The hydraulic system works by circulating oil continuously. When you need to move a cylinder, you direct the flow of oil into a cylinder and it puts a load on the pump. The pump stays loaded until you either shut off the lever or the pressure gets high enough that the fluid flows through a safety relief valve (like when hitting the end of travel on the cylinder). In the original eagle hitch system, the hydraulic fluid freely flows from the pump through the control valve and back to the pump. When you raise the lift, either partial or the full flow of the pump is directed to the piston which lifs the hitch, depending on how far you push the lever. Full, unrestricted, low-pressure flow is restored when you return the lever to neutral. Thus, if you leave the two valves open and try to work the loader, then the fluid is free to circulate through the eagle hitch circuit with little back pressure. This means that you will get almost no flow to the loader valve. Try this: open both valves and fully raise the eagle hitch while leaving the eagle hitch lever in the full up position, and simultaneously try to operate the loader. Once the eagle hitch raises all of the way up, the loader should work normally. This just demonstrates how the system works. Most tractor hrdraulic systems have a hydraulic priority. Using the valve closest to the pump in the hydraulic circuit will render all of the other valves inoperable until that first valve is released. This is the case with the accessory Case control valve that was intended for the VAC. Denending on your control valves, it might be possible to replumb the hydraulic system so that the loader has priority over the eagle hitch or vice/versa, and eliminate the valves. It is not a problem with pressure, it is just the way that the system works.
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 - Identifying Tractor Noises - by Curtis Von Fange. Listening To Your Tractor : Part 3 - In this series we are continuing to learn the fine art of listening to our tractor in hopes of keeping it running longer. One particularly important facet is to hear and identify the particular noises that our
... [Read Article]
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.