How can I fix my ford 3930 tractor?

How can I fix the brake seal (rubber boot on the rear end of tractor), that cracks and leaks every few months for no reason that I know of?
Harry Lambert, March 2006


done
Without knowing any more info I would only make sure that the oil you're using is compatible with the rubber in the seal. Sounds like it is being detiorated by the oil

chevy529, April 2006
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