You do realize that you’re getting into an area that is a little beyond the average job a
back yard mechanic usually tackles, but here goes.
This is the easy part, actually that is just a coupling nut. I formed a radius on the heads of
the bolts in the bench lathe to get them close to the inside contour of the pole piece. That
cast factory unit that you pictured would be nice if you were working everyday with
starters/generators but it’s basically just to keep from distorting the housing when you put
it in the pole piece screw press. Also it helps to seat the pole piece when mounting a new
set of coils.
This is where it gets tricky if you don’t have access to a machine shop. I don’t know if
you will be able to put enough pressure down in a drill press. In the mill I can lock the
quill in the up position and adjust the knee to put pressure on the screwdriver while I turn
it with a wrench. The Screwdriver needs to be made from a relatively tough material or it
will just shear the blade off when you turn it. Something like 4140 hex stock will work
and is available from vendors like McMaster Carr. The blade in the picture was just a
piece of hex I dug out of the scrap bin and I did have trouble with it shearing on a later
screw because of the material and the shape that I hurriedly machined out. The material
should have been tougher and the shape should have been much like that of a drag link
socket, which might even be made to work.
So in answer to your question, “where can I get one”, you will probably have to find a
machine shop that can make you one or adapt something, like the drag link socket.
DG
