New 9A - Separating lead screw from gearbox?

Jeff_G · Feb 5, 2005

Well, all the helpful folks who frequent this and similar boards convinced me that I needed to upgrade to a South Bend, and my "new" 1950 9A is now sitting in the family room.

I want to pull it apart and clean out a lot of old lubricant and preservative. First question: how is the lead screw attached to the gearbox? It's not obvious from the parts diagram.

Thanks,
Jeff Greenblatt

Webb Wyman · Feb 6, 2005

Hi There,

If my memory serves me, the lead screw is is held in by a nut. Later models use a single locking nut with a nylon insert where earlier models used two jam nuts.

I find it easier to remove the gearbox with the leadscrew attached. Then you can flip it over and get to the insides of the gearbox and remove the leadscrew with ease.

To remove the gearbox, you need to remove the headstock first. Then the three screws that hold the gearbox on to the bed can be removed easily. The leadscrew will slide out of the right hand bearing support and apron towards the left.

I hope this information helps. Good Luck!
-Blue Chips-
Webb

Jeff_G · Feb 6, 2005

Thanks, Webb.

If you keep giving such helpful, concise answers, you're in for a lot of questions!

Jeff

jim rozen · Feb 6, 2005

While you have the machine apart, you will
be spending some time cleaning it up no doubt.
I will pass a tip on from dave sobel, while
it is apart, tape the leadscrew and gearbox,
or just the leadscrew if you have it that far
apart, to a piece of 2X4 to prevent it from
getting bent. Also be very careful with the
arm(s) that extend(s) out from teh bottom
of the qc box. They are pretty fragile.

The single-tumbler arms expecially are hard
to come by I think.

Jim

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New 9A - Separating lead screw from gearbox?

Jeff_G

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Webb Wyman

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Jeff_G

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jim rozen

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