Take the hub apart. Ill bet the spring pedals that are supposed to push the gear set to "lock" have over traveled beyond where they are supposed to be, or someone put them in wrong. the knob while turn and lock, but it will not actuate the slide.
By nature of the front differential design the torque is automatically transferred to the wheel with less resistance.
Jim
By nature of the front differential design the torque is automatically transferred to the wheel with less resistance.
Jim