South Bend 9a Gear train cover

tabletop · May 6, 2021

I acquired an old South Bend 9a Lathe from the closed Boeing factory in Toronto and I'm rebuilding it to original condition. Its history traces through Avro, DeHavilland, Douglas, McDonald-Douglas and Boeing. Its been a lot of fun restoring it but I need a bit of information on a small problem. The pivot pin on the gear cover is worn and needs replacing. It looks like a taper pin holding the pivot in place but cant locate the narrow end of the taper. Any advice would be appreciated. Thanks guys.

metalmagpie · May 6, 2021

Very strange font to post in .. however. I had a SB9 and the gear cover didn't hang straight. I learned that the pin is essentially cast in babbitt, not held by a taper pin at all. I fixed mine by heating it until the babbit just softened and then I clamped it on place on the lathe and let it cool. After that it was perfect.

metalmagpie

tabletop · May 7, 2021

tabletop

tabletop said:
I acquired an old South Bend 9a Lathe from the closed Boeing factory in Toronto and I'm rebuilding it to original condition. Its history traces through Avro, DE Havilland, Douglas, McDonald-Douglas and Boeing. Its been a lot of fun restoring it but I need a bit of information on a small problem. The pivot pin on the gear cover is worn and needs replacing. It looks like a taper pin holding the pivot in place but cant locate the narrow end of the taper. Any advice would be appreciated. Thanks guys.

Thank you metalmagpie. I will check that and try it this weekend

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