Posted by Hemmjo on May 21, 2020 at 04:59:22 from (67.149.181.71):
I have an HV4901 hydraulic adapter kit installed on my Ford 860 tractor. I have a Cross, Converta-Valve set up to operate a single acting cylinder on the top link. The implement is light when empty, a concrete mixer.
It is plumbed to power up (retract) and to float down (extend). Up works fine. When the valve is activated down it will start to lower, then raise up, then lower. If I hold the valve in the down position after the implement is down, it will rise up, then go back down repeatedly in a very rhythmic manner.
While investigating, I removed the implement and used a chain between the top link and the hitch on my truck. With the lever in the down position, the tractor easily pulls to extend the cylinder, and will hold it extended with no brake applied. Moving the valve to retract the cylinder, will drag my truck if I apply the tractor brakes.
I don't believe the problem is in the valve or the adapter, but rather in the tractor. It seems like the return line may be pressurized for brief periods sometimes.
I am wondering if there is something wrong withthe hydraulics on my tractor? Maybe the empty mixer is just too light to extend the cylinder and I should switch to a double acting top link?
Upload one or more videos to your post. Photo and video filesizes should be less than 8MB. 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 - Gettin My Old Tractor Home - by Clayton Sweeney. My name is Clayton Sweeney. I am from Southern Maryland in a small town called Lothian. I am 20 and my father and I are the proud owner of a 1954 Allis Chalmers WD-45. When I was 18, I dated a girl in the next county over. Her family are tobacco farmers. It was a cold Thanksgiving evening, and we were going up to her Grandparents house. As we passed one of their barns, I noticed something orange in the corner of my eye in this old shed. It was pretty dark and I asked what it was
... [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.
