(800) 853-2651
SHOP NOW

46 John Deere B oil pressure

J

Jthuman8567

New User
My 46 B at idle the oil pressure is right at the stop on the guage and at full throttle is almost touching the M? Am I ok any ideas?
 
I'd fist check the gauge is good and then you can turn it up. On that year you have to remove the top engine cover to get to the oil pressure adjustment screw.
 

You should tell us what type and Weight oil you have in the engine...

"M" at full throttle suggests it may be set for proper pressure..

If you are using 5w-20 oil, I would expect low oil pressure at idle..

More often than not, back in the past the norm was to use straight 30 Wt oil, changing to a lighter oil for the Cold Months..
 

Just thought about the Pressure Relief valve... it may be stuck open, dropping oil pressure at lower RPM..

Myself, to slowly clean my Engines, I add Rislone to the oil.. A rather easy-going engine cleaner and change that out in the spring..

You may want to check your Manual, to see if you can access the relief valve and check it..
 
If you have the crankcase lid off check the line inside the crankcase that goes up to the oil pressure gauge line. The nut on the top of that line backed off on my A, bleeding off pressure and making the gauge read low. It took some real head scratching before I found it.
 
Maybe your carb float doesn't close and gas leaked past the float valve into the cylinders, past the rings into the oil.
 
Thanks a lot guys I'm going to change the oil and see what happens. If still low pressure I'll pull the cover thanks for the help.
 
You must log in or register to reply here.

Similar threads

J
John Deere B oil pressure
Replies
3
Views
434
buickanddeere
B
4
Allis Chalmers oil filter
2
Replies
21
Views
996
Jim.ME
J
J
Fluctuating Water pressure
Replies
12
Views
616
cleddy
C
J
Any information on this john deere model B?
Replies
12
Views
605
Princeton Bill
P
L
Ford 8 n no oil pressure
Replies
1
Views
313
used red MN
U
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.

Copyright © 1997-2024 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

Back
Top