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
:

JD B low oil pressure????

Welcome Guest, Log in or Register
Author 
Alan Hughes

10-22-2003 11:35:34




Report to Moderator

Last winter I repainted and fixed up a 1946 B that I have had and used for nearly 15 years. In the process if fixing it up I replaced the cup that holds the oil filter in place because the large (4-5") washer had been missing for as long as I owned the tractor. I also replaced all the gauges, including the original but rusty oil pressure gauge. I used gauges from Atique Guges inc. After I finished the cosmetic restoration and started it up I noticed that the oil pressure shown on the new gauge is drastically lower than what I had on the old gauge. Both gauges have the same style of unnumbered face. Is the low oil pressure reading due to the new gauge that is calibrated differently or was the removal of the washer in the oil filter assembly an old farmer fix for low oil pressure?

Thanks in advance,
Alan

[Log in to Reply]   [No Email]
JC

10-23-2003 12:55:32




Report to Moderator
 Re: JD B low oil pressure???? in reply to Alan Hughes, 10-22-2003 11:35:34  
Alan, here is one thing to consider. On my "D" the oil pressure control valve [spring loaded flapper plate] is down-stream of the filter element. I think your tractor is the same, but you need to confirm this. You have added resistance to the flow of oil from the pump by adding that large washer - which is now forcing all of the oil to flow thru the filter element instead of allowing all of the oil flow to bypass the element. IF your oil pump is badly worn, it is possible that it can't pump high enough pressure to overcome the pressure drop in the filter and still provide the desired pressure to the bearings, etc, and guage. If the plate has been missing for 15 years, I believe you have had no oil filtering for 15 years. Unless the crankcase has been thoroughly cleaned, the filter will pick up a lot of crud and the pressure drop across the filter element will rise quickly.

This is in addition to the other suggestions below that relate to determining gauge accuracy.

Best of luck,
JC

[Log in to Reply]  [No Email]
Clooney

10-23-2003 03:50:23




Report to Moderator
 Re: JD B low oil pressure???? in reply to Alan Hughes, 10-22-2003 11:35:34  
Alan, removing those washers probably has [had] no effect on your oil pressure. ~As stated below, you should either install a KNOWN GOOD numbered gage & see what your oil pressure really is, or calibrate your gage so you know for sure what pressures L,M,H really are. ~You can test your gage by hooking it to a tire inflator end then setting a tire's pressure to known pressures with a good tire gage, then re-checking the pressure using your oil pressure gage.
~On your low [or perceived] low oil pressure. It could be a difference in gage calibrations, or you have engine wear, or you have gasoline in your engine oil [a common problem], or you over-tightened the oil filter lower cover when replaced the filter parts & that bent the top of the oil filter body or broke the oil filter head [both common Deere problems IF the lower oil filter cover was EVER over-tightened].
~Your oil pressure should be 10-15 lbs at fast idle on a [working hot] engine�.

[email protected]

[Log in to Reply]  [No Email]
JC

10-22-2003 15:23:38




Report to Moderator
 Re: JD B low oil pressure???? in reply to Alan Hughes, 10-22-2003 11:35:34  
First thing I'd do is "Tee" in a "known good" gauge that has PSI on the dial and compare the reading with the recommended pressure for your tractor and the reading on the aftermarket guage. Someone on this site will know what the pressure range in psi should be.

If it helps at all, I bought an oil pressure gauge from JD for my "D". IF the correct gauge for your tractor from John Deere happens to be AA1653R [your local JD parts person can verify this for you], mine is calibrated as follows:
L mark = ~5 psi
M mark = ~10 psi
H mark = ~13 psi
Last mark on the scale =~16 psi.
These readings were taken with a 0-60 psi gauge so they are only approximate. I friend of mine bought aftermarket gauges for his tractor and is seeing lower than expected oil pressure readings. He hasn't gotten into it enough to know if its the gauge or the tractor.

JC

[Log in to Reply]  [No Email]
John D

10-22-2003 15:09:11




Report to Moderator
 Re: JD B low oil pressure???? in reply to Alan Hughes, 10-22-2003 11:35:34  
Alan I have the same problem with a 1952 G, my old gauge read little over M at slow idle the new gauge read between L and M on fast idle, I used a pressure gauge that reads Lbs to test both gauges(white face) the old gauge reads L 6 lbs, M 11 lbs, H 17lbs, the new gauge(white face) I got from the same place you did L 6 lbs, M 16 lbs, H 23 lbs. Dublins are made in Tulsa I even ordered new gauge from another company made in China and it read the same as the other gauge. The way I see it you have one of two choices leave it read what its reading or set up the pressure on your pump. John

[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