Question about the hub free-spinning dynamics on '00 LX470

[COLandCrusher]

OK so I am just a bit confused and want to double check something. The 470 is in the air now floating on jack stands at all 4 corners. Question 1- if it is in park even in the air, should the wheels spin freely? #2 Once the back left wheel was put back on and that side lowered to the ground. Should the back right wheel spin freely? I am wondering if there is a non-working 4wd component. I just cannot think of how the dynamics should correctly be operating.

 

[AimCOtaco]

What you describe so far should happen due to the 3 open differentials.
With all diffs open and the trans parked; when you turn one wheel the rotational energy will cause the wheel with the least resistance to turn. If you turned the right rear the left rear would probably turn the opposite direction. When you locked the left rear to the ground and turned the right rear then likely both fronts would turn.

If you had locked the center diff and then done test #2 (one rear on the ground) the wheel would not have turned. Similarly if all 3 differentials were locked, none of the wheels would turn when in park and all in the air.

Does that help at all? If not, start by getting familiar with how an open differential behaves and try to work back from there.

 

[COLandCrusher]

This is what I needed. My mind was just sort of elsewhere and I was having a "moment" thanks man!

 

[Spike555]

It can be confusing because you think that because the transmission is in park that none of the wheels would move, but the transmission turns the t-case which turns the driveshafts which...
But turning the wheels will turn everything until the locked transmission. So the input shaft on the t-case wont turn but the gears in the t-case will.