I know, thought it was an air "squeak" at first, yes it does occur similar to this but when I put it in high range with the faster ground speed it is more frequent. Will get back under it and look at things.Strange "squeak". Sounds more like a plastic squeak, but can't define. Does it occur the same way every time as in the video? Could jack up all four tires off of the ground and try again.
In either 2 or 4wd, the driveshaft turns in the cover from the dropbox at mid-tractor
Might need some heavier duty jacks and stands to get all 4 off the ground.
Thanks for the reply.