Posted by Owen Aaland on May 13, 2009 at 17:18:44 from (65.165.246.54):
In Reply to: Hydro posted by RickB on May 13, 2009 at 16:33:32:
The two lines coming out of the hydro case are internally connected to the high pressure relief valves in the hydro unit. One for forward and the other for reverse. They are pilot operated relief valves where the Foot-N-Inch valve serves as the control for them. When you cap off the lines the relief valve will not open no mater how much pressure they are exposed too. That is one reason it can be dangerous operating with the lines capped. The proper way to test is to connect the two lines to a pair of industrial series Foot-N-Inch valves. They are the same as the farm tractor except they have an internal spring.
Common problems for sudden failure are either a relief valve stuck open or a broken line connecting the relief valve to the fitting on the case. Since the relief valves are pilot operated they take very little pressure to open them when they are out of the system. Removing them can cause them to close even if they are stuck open. They way to check them is to use a piece of wire to measure the location of the inner spool before removing them. Remove the jumper pipe and stick the wire through the hole in the fitting.
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 - The Engine Rebuild Kit - by Curtis Von Fange. I always liked engine rebuild kits. They have all the replacement parts for overhauling an engine without going to the store to get gaskets, special measuring tools, or miscellaneous parts. They come neatly packaged, clean and tidy. But it's important not to let that packaging lull you into a false sense of security. The appearance of matching sleeves, pistons, rings, and bearings can cause frustration and agony if not properly measured and installed in a workshop environment. Following c
... [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.