The fault you have is not in the unloader & flow control valve as it is still there when u pull the aux valve lever to dead end the oil supply. At that point oil can only go 2 ways, to hitch cylinder to lift if draft valve is in lift mode , and to blow the main R/v and pass to return.
There is a problem with the linkages in the hydraulic top cover, it may be a circlip off or more likely the sensing beam and spring have become detached from their mounting pegs (hook end of spring may have broken off !! and as such the walking linkage has gone out of balance !!
To check, just rear of unloader &flow assy is a metal plate with the breather on it, remove this and you can see the linkage that operates the draft valve, operate the draft lever from full lower to full raise & back to lower again. (Engine stopped !!) and you should see the spring expand and contract. if it does then its a circlip issue, if it doesn't its a broken or detached spring.
Some skilled mechanics can replace spring through this plate but its very fiddly. Official way is hydraulic top off, replace, bleed brakes etc, allow about 12 hours labour.
I need your e mail so i can send document that shows the linkages!!
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 - Talk of the Town: Repairin a Gas Tank - by Staff. This interesting discussion is from the Tool Talk Discussion Forum. Remember that safety is your first priority - make sure you know what you are doing before attempting a potentially dangerous activity!
... [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.
