Trying to find way to fill transmission fluid

To change the fluid in the transfer case you must go under neath the vehicle ,on the side of the transfer case you will see a nut on the side ...that's is where you fill it ...on the bottom or some times on the side you will see another nut to empty it ...I recommend putting transfer case oil synthetic ....if you ever go through a lot of water while 4 wheeling,i recommend changing the fluid in your transfer case as soon as you can ...also check your rear end to see if there is water in it....to resovle problem ...add a longer hose ,so it will not take on any water ,hope this was help full