A solution for replacing the "special bolt" for drive-hub to crank-hub.
Working on a Freeman 3000 for the NAA. Installing the drive hub proved impossible without the "special bolt" required for any pump driven by the crank - as found in manuals . Took this to a local fab/machine shop and left with a sketch of a slotted bolt. This is what he made. John the owner, mentioned that it is a keeper from a large indexable fly cutter of some kind. He machined the diameter down, but other wise, a perfect fit. It went together as it should and works to centers the drive hub as well.
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