casesergelman
Member
My 400 has weak hydraulics, I swapped the pump/valves with my 800 and still has weak hydraulics, is it possible an internal line has a pin hole or something? Any suggestions would be greatly appreciated, thanks
- Thread starter casesergelman
- Start date
chuck machinist
Well-known Member
There are a lot of variables with this issue. I would start with checking the working pressure of the pump . There is an 1/8 pipe plug next to the hyd levers where you can hook up a 4501-AA Case Pressure Gauge .or similar gauge 2000psi.With fluid warmed to to95 to 115 degrees and PTO turning at 250 RPM. Move the outer hyd handle control lever SLOWLEY forward to the retained position. It should read between 1175 and 1225 PSI That is where I would start. I would not discount the fact that you could have Two weak pumps. Keep us informed.
Similar threads
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.
Copyright © 1997-2024 Yesterday's Tractor Co.
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.
Yesterday's Tractors - Antique Tractor Headquarters
Website Accessibility Policy