Yesterday's Tractor Co. Restoration Quality Tractor Parts
Click Here or call 800-853-2651 
   Allis Chalmers Case Farmall IH Ford 8N,9N,2N Ford
   Ferguson John Deere Massey Ferguson Minn. Moline Oliver
 
Marketplace
Classified Ads
Photo Ads

Community
Discussion Forums
Project Journals
Tractor Town
Your Stories
Show & Pull Guide
Events Calendar
Hauling Schedule

Galleries
Tractor Photos
Implement Photos
Vintage Photos
Help Identify
Parts & Pieces
Stuck & Troubled
Vintage Ads
Community Album
Photo Ad Archives

Research & Info
Articles
Tractor Registry
Tip of the Day
Safety Cartoons
Tractor Values
Serial Numbers
Tune-Up Guide
Paint Codes
List Prices
Production Nbrs
Tune-Up Specs
Torque Values
3-Point Specs
Glossary

Miscellaneous
Tractor Games
Just For Kids
Virtual Show
Museum Guide
Memorial Page
Feedback Form

Yesterday's Tractors Facebook Page

Related Sites
Tractor Shed
TractorLinks.com
Ford 8N/9N Club
Today's Tractors
Garden Tractors
Classic Trucks
Kountry Life
Enter your email address to receive our newsletter!

subscribe
unsubscribe
  
Allis Chalmers Discussion Forum
Show Parts for Model:

Oil pressure on Allis CA

Welcome Guest, Log in or Register
Author  [Modern View]
Wolfgang

08-18-2012 15:08:56
173.84.188.198



Report to Moderator

To all you mechanical wizards: My 1953 Allis CA initally was raised on 30W non-detergent. Recently I went to 10W-30 high detergent. Noticed little decrease in oil pressure, ran 20hrs +, changed oil. Put same 10W-30 back in, noticed a loss of oil pressure again. Few days back hauling a load of firewood, approached steep grade....you know the type.....engine holds back but just can"t. Right after that oil pressure went to almost nothing. Engine runs fine, temp very normal, oil pump works cause it sprays like crazy with oil filter off, and engine is full, oil filter and housing full. Can you fellows help me out. Do I have a bad oil gauge?
Thanks

[Log in to Reply]   [No Email]
steve(ill)

08-18-2012 18:49:26
74.36.188.36



Report to Moderator
 Re: Oil pressure on Allis CA in reply to Wolfgang, 08-18-2012 15:08:56  
may not help, but just FYI... the pump puts out a fixed volumn. The filter is packed with cotton swab and is very restrictive. THE filter allows 15% of the oil from the pump to go thru it and dump back to sump. The remaining 85% of the oil goes thru the cam shaft and sprays thru orifices at the bearings on the crank and pistons. There is also an external oil line going to the head that lubes the rocker arms and valves..You dont necessarily need high pressure, you need flow. THe PSI gauge is just a way to verify flow. Filter should have a 1/4 inch steel tube inside it with a 1/8 inch hole (i think) to regulate the flow thru the filter and back to sump. Thicher oil, more restrictive filter, smaller hole in the filter tube, and good pump seal faces are all ways to increase flow and pressure.

[Log in to Reply]  [No Email]
old

08-18-2012 16:04:15
209.86.226.11



Report to Moderator
 Re: Oil pressure on Allis CA in reply to Wolfgang, 08-18-2012 15:08:56  
10W-30 oil is really 10W oil with additives that in theory make it act like a 30W oil when warmed up. Bet if you change the oil to a straight 30W detergent oil your pressure would come right back to what it had been in the past



[Log in to Reply]  [No Email]
Jerry Coulter

08-18-2012 15:38:46
50.40.173.244



Report to Moderator
 Re: Oil pressure on Allis CA in reply to Wolfgang, 08-18-2012 15:08:56  
You might have sludge choking up the oil pickup screen. Might be best that you drop the pan and give the lower end a good cleaning.



[Log in to Reply]  [No Email]
ddl

08-18-2012 18:24:05
209.137.213.93



Report to Moderator
 Re: Oil pressure on Allis CA in reply to Jerry Coulter, 08-18-2012 15:38:46  
Did you change the filter? I have heard that different filters will mess with the pressure. I replaced my canister with a regular encased filter so i don't know if this is true or not.



[Log in to Reply]  [No Email]
[Options]  [Printer Friendly]  [Posting Help]  [Return to Forum]   [Log in to Reply]

Hop to:

TRACTOR   PARTS TRACTOR   MANUALS
Same-Day Shipping! Most of our stocked parts ship the same day you order (M-F).  Expedited shipping available, just call!  Most prices for parts and manuals are below our competitors.  Compare our super low shipping rates!  We have the parts you need to repair your tractor.  We are a Company you can trust and have generous return policies!   Shop Online Today or call our friendly sales staff toll free (800) 853-2651. [ More Info ]

Home  |  Forums


Copyright © 1997-2014 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