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.

Case Tractors Discussion Forum
:

radiator overflow under load

Welcome Guest, Log in or Register
Author 
Bruno in MO

04-09-2006 09:54:13




Report to Moderator

I have a '45 Case VAC which, when under moderate to heavy load, wants to discharge foamy coolant from the overflow vent. Could this be a radiator/cooling issue, or might it go deeper, such as blown head gasket,etc? Compression readings are pretty much uniform, and up-to-spec for a machine it's condition, and according to the engine temp, it's not dangerously hot, and there appears to be no oil in water, nor vice-versa. Radiator has been replaced in the past, but still have this problem. It only occurs under load. Any suggestions or comments welcome!

[Log in to Reply]   [No Email]
Robert Pence

04-17-2006 06:07:21




Report to Moderator
 Re: radiator overflow under load in reply to Bruno in MO, 04-09-2006 09:54:13  
Another possibility - If someone has added Bars Leaks to the cooling system, it will foam like crazy. My L did this, and the foam came out from under the radiator cap and looked like soap suds drooling down the side of the radiator.



[Log in to Reply]  [No Email]
Ken in AZ

04-09-2006 17:46:18




Report to Moderator
 Re: radiator overflow under load in reply to Bruno in MO, 04-09-2006 09:54:13  
I have a D in the shop that had problems with radiator overflowing. After tearing it down, I found a lot of rust and mud in the water jacket that would keep the coolant from flowing properly. This seems to have the same effect as running it lean or with the timing off too far... it will add a lot more heat to the engine and it has to go someplace.

You might check to see if the coolant coming out of the engine is warm. Touch the upper radiator coolant line and compare with that coming out of the bottom of the radiator. See if it seems like the temperatures are correct. Some of these tractors had optional thermostats (not sure on the VAC) and that could be jammed up causing steam buildup... does this have a working temp gage?

The water pump suggestion is good too. It could be a head gasket as well but since you don"t seem to be getting water into the rest of the engine, check everything before doing a teardown... has it had a tune-up? Is there some junk in the carb causing it to lean out under load? is the ignition timing correct? Have the valves been adjusted? I"d probably even make sure that the head is properly torqued. Why was the radiator replaced? (I assume there were bubbles in the water... but did it get overheated and crack something?) Most times these old beasts will tell you what"s wrong if you keep looking and tinkering... which is why I enjoy them so much.

Hope this helps.

Ken in AZ

[Log in to Reply]  [No Email]
Gary Cash

04-09-2006 13:34:58




Report to Moderator
 Re: radiator overflow under load in reply to Bruno in MO, 04-09-2006 09:54:13  
If I overfill my '45 Case VAC radiator (without leaving adequate space for expansion in the header tank) it will overflow after coming to full load operating temperature. Once it overflows to the point there is adequate expansion space, it stops overflowing. It does not foam when overflowing.



[Log in to Reply]  [No Email]
Walt Davies

04-09-2006 12:02:15




Report to Moderator
 Re: radiator overflow under load in reply to Bruno in MO, 04-09-2006 09:54:13  
Any Bubbles in the radiator come from only one place a leaking head gasket. You will have to pull the head to repair it. It is caused by gas pushing by the gasket and will increase when the engine is under load. To test this out fill the radiator to the top and watch for a fine stream of bubbles coming up from the bottom. If it just blows the water right out then you really know its bad. Walt



[Log in to Reply]  [No Email]
george md

04-09-2006 15:32:12




Report to Moderator
 Re: radiator overflow under load in reply to Walt Davies, 04-09-2006 12:02:15  
Walt,

Before you condem a head gasket , you should check to see if the water pump is sucking air in thru the seal . Many will suck air in before they leak water out as there is a vacuum created at the center of the impeller . See if it has bubbles in the radiator at idle , if it does , slip the belt off and check again. If the bubbles go away with the belt removed , you found the culpret .

george

[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