I saw this exact thing happen back when I worked for the Jeep garage. The Dept of Natural Resources (Game Wardens Office) in WV all ran Cherokees at the time. This one Game Warden was chasing a poacher and when the chase went off road, he tried to engage 4WD at about 65-70 mph. KA-FAWKIN-BOOM! Transfer exploded. Sent shrapnel up into the cab.
When the owners manual tells you not to shift into 4WD at speeds greater than 55, they mean it!
Make sure you check the tranny over real good! Rarely this happens without causing some sort of tail-shaft damage in the trans!
the best part about it was i was crusin down the highway
thats not the best part, that makes the story way less cool.
"The danger to America is not Barack Obama but a citizenry capable of entrusting a man like him with the Presidency. It will be far easier to limit and undo the follies of an Obama presidency than to restore the necessary common sense and good judgment to a depraved electorate willing to have such a man for their president." http://mybroadband.co.za/photos/data...re_cowbell.gif
I hear those doing that on the highway, I wonder how I can prevent it from happening to me. It looks like yours doesn't have fluid in it. 'Sorry it happened.
Being that the case is aluminum it does fatuge a little after so many years, and since the NP231 is chain driven that is another reason. It's a good idea to change fluid regularly and keep it full. The case can break some number of different reasons, but the number one issue I know of are dry cases and loose chains. I had to do a rebuild on my XJ's case like 2 years ago because the chain was starting to get a bit of slack in it.