Heavy 10 missing gears?

tiggi · Oct 15, 2015

Hi all, I recently got a South Bend 10" lathe that came disassembled. I pretty much have everything back in place and working cept the gear box. The stud gear, screw gear and idler gear are not aligned so the idler gear can't engage the stud gear. So what am I missing here/doing wrong?

iwananew10K · Oct 15, 2015

Looks like your banjo is not fully seated against the gearbox.

When you move it into position , you may end up with a gap between the gear and nut on the gearbox input, normally there would be a 40t(IIRC)stud gear there to fill in the gap - that gear would be used to get the course range of threads.

For now unless you find that gear you will need a spacer.

Note- The latter does not apply if you have the wide range gearbox.

Hope that makes sense.

tiggi · Oct 15, 2015

Thanks for reply iwananew10K,
If I move the banjo all the way then the idler gear doesn't align with the screw gear but it does with the stud gear.
The additional gear you're referring to is it on idler gear or screw gear?

Would adding a spacer to the stud gear be a acceptable solution? It's really not making much sense to me why such a design.

iwananew10K · Oct 15, 2015

Maybe this pic will help...note the spacer on the outside of the gear on the gearbox input shaft.

http://img0106.psstatic.com/158114750_must-see-south-bend-10-x-20-precision-engine-lathe---.jpg

tiggi · Oct 15, 2015

Looks like the only difference is the stud gear having an extra spacer. Maybe I have the wrong gear for the stud gear. I'll inspect it more when I get home.

TDegenhart · Oct 15, 2015

The banjo is not tight against the gear box. You are missing a spacer between the gear and the end of the shaft.

Tom

tiggi · Oct 16, 2015

I got it figured out, the spacer on the stud gear was on the wrong side. It was already on the shaft so I guess I thought it was part of the shaft. Thank you all for your help.

sicero · Oct 23, 2015

tiggi said:
I got it figured out, the spacer on the stud gear was on the wrong side. It was already on the shaft so I guess I thought it was part of the shaft. Thank you all for your help.

I have some of the gears, for the postage if I have any you need. Kenny

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