Posted by JDseller on July 03, 2011 at 23:00:39 from (208.126.196.144):
In Reply to: 4020 hydrolics posted by randy kunkel on July 02, 2011 at 18:24:14:
Bob and TX Jim are right on these hydraulic systems. The high pressure side is exactly the same. The low pressure side is way different. So we all agree on that.
Now look at my statement. "It is not uncommon for a power shift to develop these type of leaks" I could have stated that better as both transmission types can commonly have a high pressure leak. Here in north east Iowa there where a high percentage of the later 4020s sold with the power shift transmission. I have noticed in my working on them (30 plus years and JD certified on them) that the power shift tractors seem to get more high pressure leaks than the Synco-range ones. As to the why I don"t know. They are basically the same system on the high pressure side. Maybe more of them are used on loaders??? Don"t have a good answer but I have noticed that.
BOB I did not say the transmission was more likely to have a high pressure leak. I can see how I wrote it that you could read it that way.
Randy: your problem is not likely water after three changes. I would bet that you have a high pressure leak. As several of us have stated run it and look for things heating up. Then you can get back to us on here about how to check the part of the system you think is causing the problem.
You could have a leak in the charge side that is dumping all of the oil back into the sump. Usually this type of leak will be there all of the time, not changing with temperature. You would need to plumb a gauge into the charge pressure side to really tell.
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 - A Cautionary Tale - by Ian Minshull. In the early 1950s my father bought an Allis Chalmers B and I used it for all the row crop work with the mangolds and potatoes, rolling and the haymaking on our farm. The farm and the Allis were sold and I have spent a lifetime working on farms throughout the country. I promised myself that one day I would own an Allis. That time event
... [Read Article]
Latest Ad:
1964 I-H 140 tractor with cultivators and sidedresser. Starts and runs good. Asking 2650. CALL RON AT 502-319-1952
[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.
