Thanks for the interest and thoughts on this. The more aware the better for safety anyway.
The pinion gear on the electric motor, being so small, does lock the jacks position.
There has to be some sort of additional brake to prevent free spin when motor is disengaged. Suppose your little daughter fell down and got hurt the way children seem to do, which distracted you after you pulled the lever in the manual down position. You would not want to return to a rolled camper from a spun jack. There has to be some sort of safety stop.
Another great thought....finding your jacks are worn by way of ruining your camper isn't a good thing. Must be a better way, at least warning owners in the manual. Either that or I lubed where it is not supposed to be lubed, which should also be in the manual. Still, IT seems implausible somehow being that it is A mechanical device.
