Cooling System Success Story

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Don McCombs
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Zip Code: 21550
Tractors Owned: "1950 Something" Farmall Cub
1957 Farmall Cub w/FH
1977 International Cub w/FH
1978 International Cub
1948 Farmall Super A
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Location: MD, Deep Creek Lake

Re: Cooling System Success Story

Postby Don McCombs » Thu Oct 13, 2022 8:06 am

The symptoms you describe are quite likely due to overfilling the system. The Cub system does not require filling as high as you might be used to with other systems. Let it seek it’s own level and see if it stops spurting and steaming.
Don McCombs
MD, Deep Creek Lake

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Eugene
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Re: Cooling System Success Story

Postby Eugene » Thu Oct 13, 2022 8:25 am

Don McCombs wrote:The symptoms you describe are quite likely due to overfilling the system. The Cub system does not require filling as high as you might be used to with other systems. Let it seek it’s own level and see if it stops spurting and steaming.
And double check the ignition timing.
I have an excuse. CRS.

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Glen
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Tractors Owned: 1956 Farmall Cub with Fast Hitch, F-11 plow, Disc, Cultivator, Cub-22 mower
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Location: Wa.

Re: Cooling System Success Story

Postby Glen » Thu Oct 13, 2022 5:45 pm

Hi,
IHPWR, if they did a good job boiling out the engine, it doesn't need the cleaning discussed in the post before you wrote.

The 1950 Cub owner's manual tells where to fill the radiator to.
It is normal for the system to push out some coolant as the engine warms up.
When the engine cools the level should be at about the level it wants to be.
Don't keep adding water, it will push it out again.
There is probably a baffle below the filler neck, you can see below it with a light, looking to the right or left of the baffle.
Don't let the water get too low, it won't circulate. There is no water pump.
On the Cubs I have seen the level when cold should be just over the baffle.
Maybe you knew these things already.
Below is the page from the manual.
The info is at the last paragraph on the page.

http://farmallcub.com/rudi_cub/www.clea ... e%2026.jpg

The ignition timing should be set right, to help prevent overheating, and so the engine makes as much power as it can.
The Cub service manual says use a timing light, if the Cub has a Battery Ignition unit. :)

Gary Dotson
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Location: OH West Mansfield

Re: Cooling System Success Story

Postby Gary Dotson » Fri Oct 14, 2022 7:30 am

It’s pretty common for a freshly rebuilt engine to run a little hot until it gets broken in. Give it a little time and light duty use to give the rings a chance to seat and see if it isn’t better.


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