15mm ratchet wrench is your friend. dave posted a very good link..( daves sells the ratchet wrenches too

)
For real, dude!!!!!!
worth the 25 bucks
drain the T-case first and you'll get less than a pint in your hair.

but that is supposed to be a dry zone, so if there's fluid in there,
replace the trans output shaft seal or it'll bite you in the a$$, guaranteed