(800) 853-2651
SHOP NOW

cub overheating

The Cub gets quite hot at the top of the radiator but should be cool at the return tube at the bottom It is the thermosyphon cooling system. If it is actualy boiling the coolant, you could have a head gasket leak or cracked head letting combustion gasses kinto the coolant, or if the radiator or return is plugged and the coolant can't circulate it will get that hot. Copuld need a good cleaning.
 
sma ---

could be:
low on water...
blowed head gasket...
cracked head....
timing set to low....
radiatorr dirty or blocked with dust....
Don
 
I have a 1959 Cub. When I first got it it got hot plowing. I found out the bushings in the fan assembly were worn out and the fan would stop turning and no air was being drawn through the radiator. The new fan assemblies have ball bearings in them. I got one and haven't had a problem since. Might be worth checking out. rw
 
If you have a newer radiator it is normal. Old cub rads had tubes the size of pencil. New rads they use ribbon flat tubes like cars. Or at least what I been seeing.
 
Every cub Ive ever owned always spit water out the over flow tube when mowing. You cant fill the water to the top or you will see a lot come out. This is normal.
 
Do you have a good belt and is it tight enough. Next use a thermometer to check the temp as the water will be hot at the top but does the lower part seem cool when touching the block or the lower housing.
 
Look into the radiator while the engine is cool and with the engine at an idle & look for bubbles. Hal
 
You must log in or register to reply here.

Similar threads

H
Cub parts
Replies
0
Views
163
Harry in Ky
H
S
International Farmall Cub Carburetor
2
Replies
21
Views
829
Tom RS
T
D
International 784 engine oil pressure
Replies
7
Views
308
BarnyardEngineering
BarnyardEngineering
O
3600 Ford tractor over heating
2
Replies
26
Views
714
ozawkiegold
O
G
Farmall Cub
Replies
8
Views
341
Jim Becker
J
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