Well, I guess my jacks are aging - and not gracefully. When I unloaded the camper in May, one of my front jacks was really dragging and started making a popping sound as I got it raised up all the way. Same thing after I pulled the truck out and lowered down on to the stand. Had keep all the weight off it to get it to retract down to stand height. Decided I really needed to disassemble it and check it out, but put it off until today. Well, today it is totally frozen up.
Took it off and disassembled it. Acme rod portion that I can see is totally dry and rusted. Sprayed it with Blaster and letting it soak now. I guess the popping noise is from the gear slipping over the pin?
-jj