Originally Posted By: crw
So when I have the hubs locked, but move the lever in the cab back to 2wd, my front wheels are turning the axles even though they are disengaged..?
Yep. Many trucks have full time hubs. The front wheels are constantly spinning the front axles and differential.
Make sure your front hub system is in good condition if you are going to leave the hubs locked but transfer case in 2wd. Many of the lock in hubs are neglected, broken, leaking, bad seals, etc. I kind of prefer the full time hubs since they are always getting spun, always lubricated, and generally more reliable.
Your hubs are really easy to rebuild, clean, replace seals on if you get a hankering.