The 4x4 has not worked on my 4x4 Explorer Sport Trac for several years!
I removed the Transfer Case Shift Motor, took it apart and cleaned it thoroughly and then I re-installed it.

I turned the truck on put it in Neutral and then moved the switch to 4X4 High... for the first time in a long time I could hear the click underneath the dashboard/floorboard like if it was trying to engage... it did it three or four times and then I switched it to 4X4 Low and it engaged! The little light came on. I tried to back out of the garage and I can hear the transmission shift but it did not move!
I put it in Drive and I can hear the transmission shift over but nothing. The engine would rev up but it wouldn't move forward. I tried putting it in park and it sounded like it grinded gears.
I unplugged the battery for 20 minutes and tried all of this again and nothing.
I got underneath and turned on my cell phone camera under the transmission and repeated the same steps above. I could see the shift lever on the side of the transmission from the column move through all positions.

I tried to push the truck out of the garage in Neutral and I cannot push the truck at all!

Is my transfer case stuck in Netrual? Did fuses blow? I can't leave the garage open all night... any advice would help out!