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.

Discussion Forum
:

Low Oil Pressure TO-20

Welcome Guest, Log in or Register
Author 
Craig

02-14-2001 03:09:30




Report to Moderator

My TO-20 oil pressure never gets up over 20psi. I replaced the gauge and it still is low. The motor runs fine, no smoke, usues no oil, fresh oil and filter. Any ideas? I wouldn't think it is time for a rebuild because the motor shows no signs of needing one.




[Log in to Reply]   [No Email]
Joe Ferguson

02-15-2001 03:08:56




Report to Moderator
 Re: Low Oil Pressure TO-20 in reply to Craig, 02-14-2001 03:09:30  
Hi Craig

The situation you describe is common to these engines. If you change oil regulary and avoid engine overheat it will last many many years.
Other failures may occur before breakdown due to low oil pressure. However if the engine begins to knock stop it immediately to avoid damage then it will be time for overhaul but it may never knock.


Hope it helps

Joe ferguson

[Log in to Reply]  [No Email]
Joe Ferguson

02-15-2001 04:59:22




Report to Moderator
 Re: Re: Low Oil Pressure TO-20 in reply to Joe Ferguson, 02-15-2001 03:08:56  
Forgot in previous post


It is not recommended to try to adjust oil pressure especialy if you don't know what you are doing. If you adjust pressure when engine hot
when the tractor is started in cold climate with heavy oil the pressure will be too high you risk oil pump damage. I saw broken oil pump shaft due to that.

My humble opinion is..... .don't touch

Good tractoring

Joe Ferguson

[Log in to Reply]  [No Email]
Rick

02-14-2001 20:32:03




Report to Moderator
 Re: Low Oil Pressure TO-20 in reply to Craig, 02-14-2001 03:09:30  
My TO-20 has over 40psi when it's cold, but after about five minutes it drops to near 0 at idle and about 10psi at working speed. It's been that way for the whole year that I have owned it. Runs great. Ain't broke, don't fix it.



[Log in to Reply]  [No Email]
Arch W.

02-14-2001 08:29:37




Report to Moderator
 Re: Low Oil Pressure TO-20 in reply to Craig, 02-14-2001 03:09:30  
I have a '49 TO-20. I grew up (you might say) on a TO-30. Been driving Fergusons for 40 years, and I have to say I've never seen one yet that has had high oil preasure. They've always been bearly in the "normal" range. I'm in the proccess of rebuilding the motor right now and have also rebuilt the oil pump. I'm looking forward to see what kind of preasure there'll be when it's complete.



[Log in to Reply]  [No Email]
Ran

02-14-2001 18:13:24




Report to Moderator
 Re: Re: Low Oil Pressure TO-20 in reply to Arch W., 02-14-2001 08:29:37  
hey Arch is there any paticulars that a person might look for in rebuilding a cz120
especialy the oil pressure concerns



[Log in to Reply]  [No Email]
dennis

02-15-2001 14:59:51




Report to Moderator
 Re: Re: Re: Low Oil Pressure TO-20 in reply to Ran, 02-14-2001 18:13:24  
oil pressure is directly related to 3 things: 1) viscosity of oil 2) bearing clearances
3) condition of oil pump

If you're doing a complete overhaul, you'll take care of 2 and 3. Changing and using a proper weight oil (any modern oil will do) will take care of #1.

As long as you set up the bearing clearances (includung camshaft) properly and replace the pump gears and plate, you won't need to worry about oil pressure.

[Log in to Reply]  [No Email]
David Waymann

02-14-2001 08:13:16




Report to Moderator
 Re: Low Oil Pressure TO-20 in reply to Craig, 02-14-2001 03:09:30  
Craig: If your pressure is unvaried at 20 psi, I wouldn't worry about it--you really don't have low oil pressure until you hit 5-10 psi. You could try adjusting it upward with the adjustment (up front near the governor, as I recall). Check your manual, or I can check mine and get back to you. Typical signs of pressure problems are exhaust smoke and dramatic drops in pressure when the tractor has been under load (hard work) for extended periods of time. Pay attention to your oil viscosity--mostly that it is not too thin (summer) or too thick (winter). I have been using 15W40 year round. Some may say this is too heavy, but my TO-20 is 50 + years old. There has to be some wear in there somewhere. Your straight weight oils are fine for warmer weather, but can be sluggish in the colder seasons (can increase wear). Let me know if you want details about adjusting your oil pressure. David

[Log in to Reply]  [No Email]
Craig

02-14-2001 08:24:15




Report to Moderator
 Re: Re: Low Oil Pressure TO-20 in reply to David Waymann, 02-14-2001 08:13:16  
David - Thanks for the info. My pressure never gets up to 20psi. It is usually between 10 to 17 or so. I did not know that you can adjust the pressure. I usually run straight 30 or 40 wt oil all year round. Thanks again!

Craig



[Log in to Reply]  [No Email]
Greg

02-15-2001 10:55:06




Report to Moderator
 Re: Re: Re: Low Oil Pressure TO-20 in reply to Craig, 02-14-2001 08:24:15  
I have a TEA 20 and my oil press is about 85 psi cold and then drops to about 60 psi, Is it too high?



[Log in to Reply]  [No Email]
Joe in NY

02-16-2001 13:31:44




Report to Moderator
 Re: Re: Re: Re: Low Oil Pressure TO-20 in reply to Greg, 02-15-2001 10:55:06  
Greg.
TEA's have an adjustment on the oil filter housing.
The "book" recommends 40-60psi but take that with a grain of salt. I'm sure that is not with muli-vis oils. If you look you'll see a threaded stud with a locknut on the housing. Inside is a ball check. That is your relief valve. Back it out so the pressure stays below 60psi. Low end depends on oil and engine condition that with those pressures look dandy.
Hope it helps.
Good luck
Joe PS remember to tighten the jam nut when done

[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