
The second jack is aftermarket and is also in bad shape. When the weight is on the jack the top of the jack will move back and forth around 2 inches. The previous owner broke his foot when that jack broke and the trailer feel on his feet. So, basically I don;t trust the second jack and have the trailer's weight resting on a log.
I first sprayed the Attwood jack in PB Blaster then I was able to pry the rotating pin out and start loosening the jack's swinging motion. Next I tried turning the crank to see if the jack would go up or down. Unfortunately the jack just spun in place and did not move up or down. I took the Attwood jack off by removing a big c-clip. To disassemble the jack I punched out the pins that hold on the two gears. This freed up the inner tube of the jack. At this point I could see that the screw the gears turn was seized inside the inner tube. Tonight the jack will soak in PB Blaster and hopefully I can work it free in the morning.