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
Order Farmall Cub Parts Online

cub oil pressure

Welcome Guest, Log in or Register
Author 
billde

06-18-2005 19:46:15




Report to Moderator

Just bought a cub today, runs fine no noises, but has very little oil pressure. How much should it be running at idle and full rpm's? The oil is clean, could my oil filter be plugged? Is there a way to adjust the oil pressure? Thanks!




[Log in to Reply]   [No Email]
El Toro

06-19-2005 17:16:55




Report to Moderator
 Re: cub oil pressure in reply to billde, 06-18-2005 19:46:15  
What did you find with out on the oil pressure on the Cub? Hal



[Log in to Reply]  [No Email]
billde

06-19-2005 17:33:44




Report to Moderator
 Re: cub oil pressure in reply to El Toro, 06-19-2005 17:16:55  
changed oil, put a.010 shim behind the relief spring, now I have 20 lbs. Not happy yet, but at least I know I"m getting oil, will get a new guage Monday and go from there. Thanks to all for the help.



[Log in to Reply]  [No Email]
El Toro

06-19-2005 18:56:17




Report to Moderator
 Re: cub oil pressure in reply to billde, 06-19-2005 17:33:44  
Glad you have oil pressure. Rod and main bearings are critical in good oil pressure too.
You may want to drop the oil pan sometime and use plasti-gauge to check your clearances on the rods and mains. The manual calls for the clearance
to be from .001" to .0035". I think it should be
from .001" to .0015". If the crankshaft journals
aren't scored or rough, you can use undersize inserts if they're available for a Cub. I used .002" undersize on an A and just had the crankshaft polished. I haven't seen any .002"
undersize for a Cub. Hal
PS: I pulled the engine on the A since it was seized.

[Log in to Reply]  [No Email]
scruffy

06-19-2005 04:41:56




Report to Moderator
 Re: cub oil pressure in reply to billde, 06-18-2005 19:46:15  
From my experience, low oil presure was usually due to worn bearings not a worn pump(but it can be). Pump is a major repair on cub. Rings and rod bears are just about as easy. But most important...does the oil presure gauge move after starting. As mentioned, cubs do lose prime if they sit a long time and will NOT pump oil (no matter how long you run them) until you use an oil can and fill the pump. There is the tiniest little allen head cap screw, which is really hard to find on the left side, kinda between the two hydralic lines. Use a good well fitting allen wrench....don't strip this one. Old tired cubs often don't have a lot of presure but it should climb up 1/2 way when cold. I work four cubs commercially and the one that hasn't come in for a "major O/H" I run 40 oil with Lucus additive. I have put 50 in it during the summer.Good luck, the cubs are just great machines.

[Log in to Reply]  [No Email]
El Toro

06-18-2005 20:11:29




Report to Moderator
 Re: cub oil pressure in reply to billde, 06-18-2005 19:46:15  
What has the oil pressure been reading? I wouldn't run that engine until you determine why the pressure is low.

There's been several postings on here with Cubs.
When the oil and filter has been changed, the oil pump appears to lose its prime.

Are you sure the gauge is indicating correctly?
I would install a calibrated gauge to see what the
pressure is.

Here is what someone recommended & posted when this happens.

1. Remove allen head screw at the back left side
of the engine block and add oil.

2. Remove oil filter cap & fill the housing with
and replace the top. Hal
PS: You may want to do this first.

[Log in to Reply]  [No Email]
Karl Z.

06-18-2005 20:07:16




Report to Moderator
 Re: cub oil pressure in reply to billde, 06-18-2005 19:46:15  
I'm pretty sure the Cub has a bypass oil filter so if it's clogged it won't have any affect. I'd start by checking the oil pressure gauge by replacing it with a one you know is good. Then I'd check the oil pressure relief valve. It's located on the right side of the engine just under the magneto drive. Unscrew the plug and remove the spring and plunger. Make sure the plunger is clean and can slide easily in the hole. Also, check the spring for proper tension. If all of that checks out then I'd drop the oil pan and look for restrictions in the oil pickup or sludge in the pan. Finally, if none of those fix the problem, you're left with spliting the tractor and replacing the oil pump on the back of the block. Hopefully, it will be something easy and inexpensive to fix.

[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