I rebuilt my hydrovac on my 46 two ton this summer. I've never done anything like that before but it was pretty strait forward. I think the price on a rebuilt was about $260 and I bought a kit for about $125. Mine uses a large leather washer in the vacum pot. That would have cost another $50.00 but I was able to clean mine up and make it work. I bought my stuff from Reman in Atlanta. I don't recomend them. They lost my order and then shipped it with missing parts. The parts they left out took over a week for them to ship. I think it was about a month before I had what I needed to get it done.