Posted by charles todd on August 07, 2008 at 16:40:10 from (205.242.95.131):
First lets look at the unit in question: The Power Steering Flow Divider Valve.
This is on a Farmall 504 Diesel with remotes and power steering (obviously because it has this). Here is the breakdown from the TC-88 parts manual.
This is what I've got; low remote hydraulic pressure to or from the valves.
I have replaced the pump with a NEW 17GPM unit (previously 12 GPM), NEW oil, NEW filters (stock 12 GPM filters, two small round units), REBUILT remote valves, NEW male and female couplings, and REBUILT 1600 psi hydraulic pilot relief valve (looked good, little wear).
I still have the same problem. When I stroke the valve to put down pressue on the loader to raise the front end off the ground the power steering flow divider squeals. Also I can feel heat from the pilot relief valve during this time. It did this with the 12 GPM pump, just the loader moved slower, not it is ugly fast. I do not think it is a filter issue either.
Is the relief too weak? Is the power steering flow divider bypassing? Is the remote valve bypassing (probably not)?
I know that using the rear remotes for loader service is usually looked down on. I am searching for a 3 spool valve with float, power beyond, and an adjustable pressure regulator. I will plumb this before the remotes to give the loader 2000-2500 psi.
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 - Women and Tractors - Tractor Engine Repair - by Teri Burkholder. One of the great things about working on a tractor engine with your other half is that you know what he is thinking of at all times and can anticipate his every move and his next thought of what he will do. With Ben, anyway, I can tell! He'll be busy working and I�m handing him tools and he says, "give me that..." and I�ve already got it in his hand or "hand me that....."and I�ve got the portable light right where he needed it placed to see. "Run in the house and get me a...."as I open th
... [Read Article]
Latest Ad:
1965 International Harvester McCormick Farmall cub tractor 2,500. Two owner tractor. My grandfather bought new in 1966, then we inherited it. Have all the paperwork original manual and all maintenance records. It starts and moves. Comes with underbelly mower, plough, and some other attachments.
[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.
