I would pull the entire unit from the tractor and rebuild it on the bench. I would work on the premise that all the seals are bad, given the failure of two so far. The rebuild is actually pretty easy, if you take your time, take lots of pictures and keep things clean. There are many threads on this subject on this and other forums.
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2364i (1541)
Kohler ECH23
Power Steering
54" Deck
451 Snow Blower
42" Plow
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