The ones I remember work like he stated below, when locked, seems opposite wheels on each axle, diagonal would spin if slippery. Remember the label on the switch, said for slippery conditions or something? I know of one guy who had a trucking operation who used to disconnect them so the drivers would not run with them on.
I've always wondered what a power divider is or does, is it the same thing?
I understand how those rears work like in your question, but I remember the time I blew a power divider to pieces in a triaxle freightliner, 8 spd low hole - deep reduction, and I was using lo range, owner had sent me to work on site, excavator operator totally overloaded me and i did not know it, should have stood on the cab protector while he loaded, this was a road truck, would handle site work, but you can't heap the 28 yard box with heavy gravel and run in soft conditions, ground was stable but spongy enough to strain the driveline, just too much weight, it let loose like a grenade, pieces of gears punched right through the cast housing, I have one piece of each in a jar, that would have really hurt someone standing near it, always wondered what that power divider actually did. I had to help repair the darned thing, but we just put a new one in, always wondered what would have caused a failure like that, better to use a heavy ole AutoCar, or Mack on site, they always took the abuse.
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Today's Featured Article - Third Brush Generators - by Chris Pratt. While I love straightening sheet metal, cleaning, and painting old tractors, I use every excuse to avoid working on the on the electrics. I find the whole process sheer mystery. I have picked up and attempted to read every auto and farm electrics book with no improvement in the situation. They all seem to start with a chapter entitled "Theory of Electricity". After a few paragraphs I usually close the book and go back to banging out dents. A good friend and I were recently discussing our tractor electrical systems when he stated "I figure it all comes back to applying Ohms Law". At this point
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