Thge other day The R/H track started to spin on ice when we were loading the machine onto our trailer. Today taking he machine off the trailer and putting it in the garage , it sounded like it was slipping again. R/H side, so I got out to check it. The R/H track had jumped off. The rubber drive sprocket turns all directions. It should be locked up?Correct?

?? This is all new to me. I am wondering if I broke an axel??
Any help will be greatly appreciated. Bob