Farmall Cub Forum -- Questions and answers to all of your Cub related issues.
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Tue Feb 17, 2004 10:49 pm
Tue Feb 17, 2004 11:24 pm
Cubs tend to seek their own level as far as cooling systems go. Mine stay at 1-2 inches below the filler neck. To determine if you have a real problem, does the level continue to fall or does it stop at that point? My 62 LoBoy has that intruding overflow, but not the 48 and 52 Cubs. I prefer to run without pressure in these old radiators.
Wed Feb 18, 2004 12:16 am
I don't know when pressure caps were installed at the factory. My '59 Lo-Boy has a flat non-pressure cap. Since it is the original style, I am guessing it has always been there.
Be aware that not all filler necks are the same. I don't think it is an aftermarket only problem, as there were several non-interchangeable pressure caps. If the pressure cap isn't matched to the length of the filler neck, it might not fit or may not hold pressure.
Sometimes a small coolant leak can be "cured" by changing to a non-pressure cap.
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