Not being able to lift heavy loads, or as heavy as the tractor use to be able to lift, definitely points towards a loss of available pressure but still does not rule out other potential malfuctioning components.........short of flow testing the hyd. pump there is no way to confirm its efficiency and replacing it will be "on a hunch"............
According to the book what type of hyd. pump does your tractor have?? gear, vane, piston??
If it's equipped with a gear pump the hyd. system will also be equipped with one or more relief valves that may be opening prematurely causing a loss of available pressure......Note: the tractor may be equipped with relief valves regardless of what type of pump it uses, especially if auxillary control valves have been installed......
If it's equipped with with a piston or vane type pump, there may be a malfunctioning stroke control valve that is "shutting the pump off" prematurely or the stroke control may simply need to be re-adjusted due to a weakened spring...........
Also you mentioned you'd be changing the oil.......change the hyd. filters while you're at it(inspecting the old ones for filings- iron, brass, aluminum, etc.) Determine their placement in the hyd. system, if you're lucky and they are "downstream" from the pump you'll be able to tell immediately if the pump is failing by the amount of contamination found in the filter.........
Not to say that the pump couldn't be the problem but there are many other components in a hyd. system that can cause the symptoms you speak of, components that should be far cheaper than the pump too.............
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 - Product Review: Black Tire Paint - by Staff. I have been fortunate in that two of my tractors have had rear tires that were in great shape when I bought the tractor. My model "H" even had the old style fronts with plenty of tread. My "L" fronts were mismatched Sears Guardsman snow tires, which I promptly tossed. Well, although these tires were in good shape as far as tread was concerned, they looked real sad. All were flat, but new tubes fixed that. In addition to years and years of scuffing and fading, they had paint splattered on
... [Read Article]
Latest Ad:
2022 John Deere 5045E, 4wd, front end loader and 3rd function with grapple. 120 hrs, 55k new, must sell
[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.
