I would say it is the flow control valve leaking past. They do usually show wear on the lands but, the bore can be worn also and that is a major job to rebuild. You could disconnect the line at the flow control valve and put a gauge directly onto that fitting. It should show you 1200 psi without operating an aux valve. If it does not, then operate the aux valve. If you get 1200 psi doing that, you will know the power steering relief valve is good. The relief valve is a small ball type valve located below the flow control valve. Totally separate from the main relief valve under the top four bolt cover. I have put many new flow control spools in over the years (originally they were not a serviceable part but IH wised up). Last one was about 8 years ago and was still available. I have heard it is no longer available but a good parts man may be able to locate one. If the bore in valve is worn a new spool will not help much. A make shift flow test will tell you also if you are getting good flow at reasonable pressure, BUT, the capacity of the reservoir is so small that it has to be a very short test and probably only catch a quart and calculate gal per min from that.
Upload one or more videos to your post. Photo filesizes should be less than 300K and Videos, less than 2MB. Formats allowed are gif, jpg, png, ogg, mp4, mov, and avi. Be sure to use filenames without spaces or special characters, and filetypes of 3 digits lower case.
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 - On the Road with Dave Gohl: Auction Musings - by Dave Gohl. I was thinking the other day about all the auctions I've been to in the last few years. There've been many. Some have been very good, some have been well, disappointing to say the least. But no matter how good or bad auctions may be, we always seem to stay until the item we've come for or are interested in is on the block. I've been to some auctions near and far. I think the furthest has been the Two Cylinder 7 in the Amana Colonies last year. Lots of stuff, lots of people. I've also atten
... [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.
