xbacksideslider wrote:Just brain storming here. You might flush the internals with alcohol to absorb water, drain, dry, then oil. Might have to repeat to ensure that all the water is absorbed. A gallon of WD-40 might be even better since it displaces water; drives through it to the metal.
I think it's as Grandpaul said and needs to come completely apart. No way to tell if there's corrosion on the crank journals and main bearings otherwise, and I don't know if anything would clear it out in situ. The PO added some penetrating oil in an attempt to free things up, but the rings are almost certainly rusted to the bores.
There's bad paint and rust on the lower part of the frame, although not many fasteners and chrome parts are rusty. Wheels are fine but some of the front spoke nipples are rusty. Might as well take it all down, replace what's corroded and put it back together in a leak-stopping manner. Other than pistons, rings and cylinder bores, I'm hoping the low actual mileage means most of the wear parts are reusable as-is.