Under normal operation this would never happen. There is mild stress on this pin. The stress is placed on it as the weight of the camper is applied to the jack.
What will cause it is if the jack is binding due to the lubrication drying out and the jack begins to bind. Or if the jack reaches full up and starts hammering.
My jacks really were binding before I took them apart before the procedure was written. I found no wear on that pin... I have performed this procedure 2 times on my front jacks and have as of yet done anything to the rears. 13 years.
So maybe the previous owner actually used a drill to move the binding jacks up and down... Some drills can really put out the torque.
Glad everything survived.
Jim
