Welcome! Please use the navigational links to explore our website.
PartsASAP LogoCompany Logo (800) 853-2651

Shop Now

   Allis Chalmers Case Farmall IH Ford 8N,9N,2N Ford
   Ferguson John Deere Massey Ferguson Minn. Moline Oliver

Attention Forum Users: On the 28th of December 2023 at 9:00am Central Time, we will be taking the forums down for maintenance while we prepare the new forums for your use. Please click here for more information.

John Deere Tractors Discussion Forum
:

hydraulic cylinder for model A

Welcome Guest, Log in or Register
Author 
Jon Hurley

02-17-2007 07:13:21




Report to Moderator

I just purchased a model 44 plow that has a John Deere cylinder on it already. There seems to be a small rod that runs parallel with the piston and a small round disc on the piston. What are these for?




[Log in to Reply]   [No Email]
Jon Hurley

02-17-2007 08:56:01




Report to Moderator
 Re: hydraulic cylinder for model A in reply to Jon Hurley, 02-17-2007 07:13:21  
here"s a pic of the cylinder

Link

from your description, it probably is a numbered series cylinder.

thanks



[Log in to Reply]  [No Email]
F-I-T

02-17-2007 18:10:36




Report to Moderator
 Re: hydraulic cylinder for model A in reply to Jon Hurley, 02-17-2007 08:56:01  
third party image

Yep, that's New Gen cylinder like we had on our 4020D.



[Log in to Reply]  [No Email]
95CS

02-18-2007 09:26:08




Report to Moderator
 Re: hydraulic cylinder for model A in reply to F-I-T, 02-17-2007 18:10:36  
No, it's not. These type of cylinders were made in both high-pressure and low-pressure versions. The easiest way to identifiy them is where the hoses connect. The low-pressure version used NPT thread. The high-pressure version used an O-ring seal and SAE threads.



[Log in to Reply]  [No Email]
F-I-T

02-18-2007 10:02:26




Report to Moderator
 You are right! in reply to 95CS, 02-18-2007 09:26:08  
third party image

You are so right! I didn't look closely enough at his photo. I always seem to forget that those "low pressure, hydraulic stop" cylinders were offered back in the days of the late styled or the numbered series. I know they show up in the late styled parts book, but I thought they were first offered from the factory on the 50/60/70 (the '50' book shows both cylinders, manual and hydraulic). I don't know when they actually became available. Maybe you know. I know our original '48 "A" had the two-post maunal stop type from the factory.

Frank

[Log in to Reply]  [No Email]
95CS

02-18-2007 10:25:02




Report to Moderator
 Re: You are right! in reply to F-I-T, 02-18-2007 10:02:26  
This type of cylinder was first offered in April, 1953, or basically, when the Model "70" was introduced. Prior to that, JD cylinders were of the mechanical-stop type. I hated the hydraulic-override cylinders with a passion. Hit a little bit of a lick one time on a deal, and gathered every one of those we had, put them on a consignment sale, and bought new mechanical-stop cylinders for everything we had that needed one. Cost me a few bucks, but sure lessened the frustration load. Worth every penny.

[Log in to Reply]  [No Email]
Glen in TX

02-17-2007 09:57:57




Report to Moderator
 Re: hydraulic cylinder for model A in reply to Jon Hurley, 02-17-2007 08:56:01  
A black cylinder like that is rated for higher pressure hydraulics of 2250 psi coming out with new generation JD tractors 3010, 4010, 4020 ect. on up. Green cylinders are lower pressure cylinders rated only at about 1200-1500 psi for 2 cylinder tractors and shouldn't be used with later higher pressure tractors. The black high pressure ones will work fine with earlier 2 cylinder tractors too just don't use the old cylinders with new ones as will blow out piston seals. The disc is a adjustable stop. You pull the lever out and unthread it some to loosen the disc so it can be adjusted along the length of cylinder rod. When disc hits the stop rod arm it should detent out the controls and stop cylinder travel if working correctly. The disc allows you 6 1/2" variable stroke of cylinder with the stop or you can move disc all the way out to clevis end for full 8" stroke. These cylinders are covered in operators manuals of all new generation tractors and parts catalogs also.

[Log in to Reply]  [No Email]
jdhbag

02-17-2007 07:53:30




Report to Moderator
 Re: hydraulic cylinder for model A in reply to Jon Hurley, 02-17-2007 07:13:21  
If it is the cylinder that was made for the letter series tractors then it should have a rod with several holes in it on each side of the cylinder which pins went through to set the amount of cylinder rod travel for depth control. If it only has a single rod with an arm stickin out to engage the disc mounted on the shaft then its a cylinder that was made for the numbered series tractors. The disc is adjusted along the shaft for depth control. The disc triggered the arm on the small rod which in turn shut off the hydrauulic pressure to the cylinder. Hence stoping the cylinder shaft movement where you want it.

[Log in to Reply]  [No Email]
lejo

02-17-2007 07:25:53




Report to Moderator
 Re: hydraulic cylinder for model A in reply to Jon Hurley, 02-17-2007 07:13:21  
There should be holes in these rods so a pin can be placed to set depth of of your plow. le



[Log in to Reply]  [No Email]
[Options]  [Printer Friendly]  [Posting Help]  [Return to Forum]   [Log in to Reply]

Hop to:


TRACTOR PARTS TRACTOR MANUALS
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 ]

Home  |  Forums


Copyright © 1997-2023 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