[AT] Getting water out of a gearbox

[Mike]

So I bought a used Howard Rotavator over the winter, and am going 
through it so a friend can borrow it to till up his garden.  When I 
checked the gearbox oil, it was a nasty color, and way overfilled. After 
pumping what I could of the old stuff out, I found out why it was so 
full, water.  There is no drain plug for the gearbox and no cover that 
can be taken off to access the inside. What would be the best way to get 
all the moisture out of the gearbox. Thanks for any input.

Mike M