Thnaks. I guess I used the middle diagram to show the design of the cylinder, but mine is not down in the well. Whoever built this dug a round pit about 4' in diameter, maybe 5' deep then pour it all in concrete with a concrete top and access hole. The pump is mounted above of course. The pump cylinder is mounted inside the pit above ground so it's a suction type system the way it's setup. If I remember right, dad dropped a weight/string down the pipe, it was only maybe 20 or 22' deep and pipe maybe 1 1/4 or 1 1/2" diameter.
I first need to make sure I can get old housing off of the ground pipe, screwed on on rusted up pretty bad. I can remember dad taking it apart and replacing the leathers inside the cylinder. After years of sitting idle and top of pump open, I guess water got inside the cyl and rusted the bottom out.
Then I need see how deep it is and if there is any water still in it.
When they drilled the deep well in '89, dad stopped using this one although it was the best tasting water ever!
I have found a couplesites on line that maybe able to provide me a cyl, but man, $300-400 for one. I will go buy a cheapo pitcher pump and rig it up for as shallow as this well is.
I have also looked into making my own PVC pump cylinder, a lot of videos on the "tube". Bad part with 99% of those is that the cylinder has to be down inside the water to work. Depending on the diameter of my pipe may limit how I can build the pump, it would be pretty small, but if that's what it takes.