repair of the 6 m igniter
well i thought i would check back in with information.
the "hammer" and hammer shaft apear to be one forging on my 6 hp IHC M. i chucked the shaft and drilled through the hammer in increasingly larger drills. i was hoping to drill out what i thought was a swaged on shaft. it is not. it apears to be a forging that was center drilled both ends and then the shaft was turned down between centers.
i turned down a new cold rolled shaft to a little oversize of the frame's ID's, then took repetative cuts until i could just slide the frame over the new shaft. (if i had a small align boring set up i would have rebored and bushed the frame). Next, the replacement shaft had a step turned down to shrink fit into the hammer that has been drill in the first machining experiment, above. i heated the hammer with a torch and pressed it onto the new shaft. a small pin may increase confidance in the assembly, but i think the shrink fit will be secure. hope to assemble with new springs this weekend. opinions or thoughts?