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.

Oliver, Cletrac, Co-op & Cockshutt Tractors Discussion Forum
:

Hydraulic System Question

Welcome Guest, Log in or Register
Author 
Scott

08-20-2003 14:54:34




Report to Moderator

I have an Oliver model 1950 with a front loader. The loader runs off of the tractors hydraulic system. The loader does not seem to have a lot of lifting power considering the size of it. It won't even lift a full bucket load of dirt. If you get to much in the bucket nothing happens. It does not pull the engine down or strain or chatter. It could be a weak hydraulic pump but it seems more like a pressure bypass of some type opening up when it encounters to much force. Is there an adjustment somewhere? Something to check before I look into a new hydraulic pump? Something besides "buy a manual". Thanks for any suggestions.

[Log in to Reply]   [No Email]
Shep Va

08-21-2003 05:44:50




Report to Moderator
 Re: Hydraulic System Question in reply to Scott, 08-20-2003 14:54:34  
I will make a comment here, try switching the way the remotes are hooked up and see if that makes any difference in the performance. I just had a bunch of O-rings go bad in one of my tractors and some remotes would have full pressure and some would not.

I would recommend getting a 3000psi pressure gauge from TSC or somewhere like that and check the pressure on your system and on your remotes and see what is going on. Then you can determine if it is a problem with the hydraulics or with the loader. Very rarely does your pump go bad, it is normally a setting or bad O-rings.

[Log in to Reply]  [No Email]
Myron KY

08-21-2003 08:31:35




Report to Moderator
 Re: Re: Hydraulic System Question in reply to Shep Va, 08-21-2003 05:44:50  
I agree with the rest of the guys. The one question I do have is the loader connected, to the tractor hydraulics, via the remotes or the power beyond port. If the power beyond, you can eliminate the restrictor valves, interlock bleed screws and remote valves as culprits.

The main Pressure Relief Valve is normally set to 2050-2100 psi. Shims can be added to raise the psi to spec if needed. It may just need cleaning as dirt may be keeping it from closing.I don't have my Oliver manual with me but I believe the later models have a screen for the Relief Valve that may be clogged or come apart keeping the valve from operating correctly. Here's the location of the Pressure Relief Valve on a Hydra-Lectric system.

third party image

If connected through the remotes here are the locations of the Restrictor Valve and Interlock Bleed Screw, should you need to adjust them.

third party image

I hope this is of some help to you.
Myron KY

[Log in to Reply]  [No Email]
Ollie

08-21-2003 09:00:49




Report to Moderator
 Re: Re: Re: Hydraulic System Question in reply to Myron KY, 08-21-2003 08:31:35  
For those who may not know... it may not be obvious from the photos but there are two restrictor valves and two interlock bleed screws directly opposite one another.

Myron, you just proved that a picture is worth a thousand words. Nice camera work and the call-outs with arrows really help!



[Log in to Reply]  [No Email]
Myron KY... oops

08-21-2003 10:07:04




Report to Moderator
 Re: Re: Re: Re: Hydraulic System Question in reply to Ollie, 08-21-2003 09:00:49  
There is a Restrictor Valve and Interlock Bleed Screw for each remote. I had forgotten to mention it.

Thanks for clarifying that Ollie.

I hope Scott checks back soon. Those image links are only good for a day or so. Aggravating MSN renames my image files every other day, for some reason.



[Log in to Reply]  [No Email]
Scott

08-22-2003 09:44:03




Report to Moderator
 Re: Re: Re: Re: Re: Hydraulic System Question in reply to Myron KY... oops, 08-21-2003 10:07:04  
I've checked in. I have the photos and you have my thanks. I appreciate what you have done. Isn't technology great. Very helpful. Now I have some idea what I am looking at and maybe even what I am looking for. I don't have a lot of time right now and don't use the tractor much so I just wanted to see if there was anything quick and easy I can check. I still think the problem is the pressure relief valve popping off to soon because once the loader won't lift the hydraulics don't slow the engine down even when the engine is at an idle. Nothing happens. If something was clogged or blocked it seems to me the hydraulics would still be trying to do something.

[Log in to Reply]  [No Email]
J. Schwiebert

08-22-2003 19:26:27




Report to Moderator
 Re: Re: Re: Re: Re: Re: Hydraulic System Question in reply to Scott, 08-22-2003 09:44:03  
Maybe: How is the power steering? If your relief is leaking you will have hard steering as the relief valve is ahead of the flow divider. How does the three point lift?



[Log in to Reply]  [No Email]
Kelly

08-24-2003 08:45:32




Report to Moderator
 Re: Re: Re: Re: Re: Re: Re: Hydraulic System Quest in reply to J. Schwiebert, 08-22-2003 19:26:27  
My 1850 is doing the same thing. I have a JD 260 loader with same results. Steering and three point are also week. It takes 2200 rpm to lift a full bucket of dirt, and it's quite slow then. I did find a restrictor valve stem broken. I'm using the power beyond port. Good info, I'll get a gauge on it. PK



[Log in to Reply]  [No Email]
IanC

08-20-2003 17:04:40




Report to Moderator
 Re: Hydraulic System Question in reply to Scott, 08-20-2003 14:54:34  
Depends on what you are calling a "full bucket" of dirt. A cubic yard of wet sand (like used cattle bedding) is over 3000 lbs, that's a lot for an ag loader. A one yard bucket is smaller than you think.



[Log in to Reply]  [No Email]
A.P.

08-21-2003 02:56:37




Report to Moderator
 Re: Re: Hydraulic System Question in reply to IanC, 08-20-2003 17:04:40  
I agree with Ian. A one yard bucket is actually fairly small especially when you compare it to the buckats used on ag loaders. The buckets on ag loaders are typically for use loose lighter weight material. Most would be very hard pressed to lift a bucket full of damp sand or dirt. Is the bucket on your tractor about the same size as ou see on the new loader/backhoes running around or larger? How wide, deep, high is the bucket?

As suggested by others, try and find out the lift specifications for the loader you have. Check the system pressure.

Good luck,
A.P.

[Log in to Reply]  [No Email]
Ollie

08-20-2003 15:26:01




Report to Moderator
 Re: Hydraulic System Question in reply to Scott, 08-20-2003 14:54:34  
Buy a manual. It contains all the info you need to fix the problem. The diagnostic procedure is involved and the pictures are a really big help.



[Log in to Reply]  [No Email]
J. Schwiebert

08-20-2003 15:11:18




Report to Moderator
 Re: Hydraulic System Question in reply to Scott, 08-20-2003 14:54:34  
You need to do a better job on describing if the 3-point works on the remote cylinders or the power steering. Get yourself a pressure gauge of at least 3000 psi capacity. Then check the pressure at the coupler. It could be real simple like a loose bleed screw or a leaking relief valve.



[Log in to Reply]  [No Email]
rocky

08-20-2003 22:23:21




Report to Moderator
 Re: Re: Hydraulic System Question in reply to J. Schwiebert, 08-20-2003 15:11:18  
if your 3 point hitch system is working good then your aux. pump may be the problem,if your pump turns out good it could be cloged lines.if these are good find a manual. check you specks if your tractor is a 550 or super 55 your vickers lift pump (interal) may not have the adapter that increase pump pressure from 1500psi to 1700 psi. if this turns out to be the case call me 704-742-0554 lincolnton nc i have one i'll let go.my loader is a 1510 the only time i have had trouble is with low fluid witch will destroy your pump or overloading (1500lb max).

[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