Originally Posted by
sean.hwy
look at my post #9. on my wheel you need a thin wrench to hold the bottom nut in place so you can loosen the top nut. It will spin freely other wise.
kind of like this

That's an example of what was mentioned earlier in the thread - while a cone wrench is needed for the cone, a box wrench, or even an adjustable wrench, would work fine for the lock nut.