I bought the unit with the pump removed. After disassembling it I found the front pump housing is cracked. I hate not to get it going as it's in really good shape for as old as it is. I'm confused as to how the housing got cracked. The pump gear is still in the front engine housing and looks okay and appears whoever took it off simply removed the nut holding the gear on the pump shaft and pulled it out of the gear leaving the gear in the engine housing. The half moon shear key was sheered off on the pump shaft attached the the gear.