Navajo

We just bought a 94 Navajo from a friend of ours and it is stuck in 4WD. From my understanding all you do is push a button to set the 4WD but now it's stuck. It was driven from NC to Delaware and back in 4WD and still running but would like to put it in 2WD. Is there a fuse or a wire that can be disconnected. With the exeption of needing some break work it runs great. It's making an awlful sound that feels like it's under our feet when driving, sounds like the rotors are being disintegrated, not sure if it's break noise or the 4WD making the noise. Any help would be appreciated.

Remove the electric motor from the tranfer case and turn the tap with pliers back into 2wd then reinstall electric motor.