did you pull it out of the transfer case housing?
If so,good luck getting it back in. You have to drop your exhaust to get the clearance to get the shaft to go back into place straight and have the bearings line up in the grooves.
My mechanic and I fiddled with this for about half an hour until we realized the exhaust needed to be apart to put it back in place. It will come out with the exhaust in place, but you gotta drop the exhaust to put it back in. It's such a stupid design.