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

Shop Now

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

Farmall & IHC Tractors Discussion Forum
:

1939 H Hydraulic Oil?

Welcome Guest, Log in or Register
Author 
Tom B.

04-08-2008 16:53:09




Report to Moderator

Hi Guys. My "39 H has regular Hydraulic fluid in it despite all the articles I read saying to use SAE 30 oil. Think I need to drain and refill with 30 or leave well enough alone? Bucket works fine. Raises and holds. No problems. Why would someone switch? Also, return lines tee into where the cap should be. Someone told me to pipe the return to the bottom of the sump instead. Any opinions? Please bear with me. This is my first H. Just ordered a complete set of manuals. Love it so far!
Thanks!
Tom

[Log in to Reply]   [No Email]
gene bender

04-09-2008 04:32:30




Report to Moderator
 Re: 1939 H Hydraulic Oil? in reply to Tom B., 04-08-2008 16:53:09  
Just what do you mean the return lines go into the fillercap? Your H is using the belley pump as you describe but it is not a two way system. So the cycls on your loader must be for a two way system but there would not be any oil in the cycls on the return side so you dont even need hoses there but the way you have them shouldnt cause any problems as those return lines will be dry.



[Log in to Reply]  [No Email]
mkirsch

04-09-2008 04:58:00




Report to Moderator
 Re: 1939 H Hydraulic Oil? in reply to gene bender, 04-09-2008 04:32:30  
gene:

The upper ends of the cylinders are probably being used for auxiliary reservoirs. A belly pump doesn't hold enough oil to raise most one-way loaders all the way up without going dry.

This was VERY common with those old "straight arm" loaders with the really long cylinders.

As the loader is raised, oil is pushed out of the tops of the cylinders and into the belly pump through the fill pipe. When the loader is lowered, the excess oil is sucked back into the tops of the cylinders.

Tom B:

You do NOT want the return line on the bottom of the sump. Leave it where it is. Otherwise, the belly pump reservoir will never be full. Here's why:

Because the cylinder shafts are taking up some room inside the tops of the cylinders, there will never be as much oil coming in as going out as you raise the loader. If you raise the loader and refill the reservoir, the loader won't go all the way back down for the same reason.

[Log in to Reply]  [No Email]
Charlie M

04-08-2008 17:54:19




Report to Moderator
 Re: 1939 H Hydraulic Oil? in reply to Tom B., 04-08-2008 16:53:09  
The only problem with the lighter weight oil will be if it gets hot from a lot of use then it will cause a loss of hydraulic pressure as the oil thins too much. If you system is working for what you are doing then there isn't a problem, I'd leave it the way it is.



[Log in to Reply]  [No Email]
CNKS

04-08-2008 17:10:18




Report to Moderator
 Re: 1939 H Hydraulic Oil? in reply to Tom B., 04-08-2008 16:53:09  
The pump really doesn't care what is in it. If you are satisfied, don't change. You may see more leaks, and it may not give the pressure of 30W, but again if it works leave it alone. I don't have a loader, but I believe the reason for not using the fill opening for a return is the possibility of it squirting out the vent. Same recommendation as above.



[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