Electric motor runs fine but pump not building pressure any more. I took the pump valve body off to see if there was orings to change but only found ball bearings and springs for check valves. Do these springs wear out? Or is it just time to reseal the cylinder ram. It's the single cylinder prestolite. I'm also not 100% of where all the ball bearings were inside the valve body. Needs to be taken apart upside down and I had it on it's side..
