Jerry, The unit may or may not be rebuildable based on the condition of the gears. My advice would be to put it on ebay as is. See if it spins freely and note that in your ad. It seems that everyone that ever junked a Graham removed the blower and kept it. I've seen them go for anywhere from 100 to 600 dollars depending on condition, year and completeness. You will see at least a few of them on ebay every year.