When I said rebuild, I was talking about installing new piston cups, flappers, and gaskets (top end). It pretty simple and takes about 30 minutes to complete. You don't have to do anything with the electric motor besides clean it up a bit and blow the dust off it. The rebuild kit for these is approx. 20 bucks. If you need to replace the cylinders/sleeves you can get a complete kit for about 40 bucks. My pump is located near a gravel road and eats a lot of dust, so maybe others get a longer period between rebuilds? And like Don I have three of these pumps, so I always have one ready to go if the current one stops working.
