StrayAlien
Cast Iron
- Joined
- Aug 18, 2014
- Location
- Melbourne, Australia
.. and while I am posting ...
My '41 10L spindle cone pulley has been rattling like an old freight carriage. The pinion gear end seems pretty good, but there is a lot of wear at the bull gear end.
Ted's response re clearance in the following thread was very interesting:
http://www.practicalmachinist.com/vb/south-bend-lathes/help-knocking-cone-pulley-219781/#post1517927
I had the spindle out to check whether the large end of the cone was bushed or plain CI (I couldn't recall) so I thought while it was apart I'd shim it up to get it back to spec. Mine was 0.008", not 0.002". It has made an *amazing* difference. NO rattle at all and much less play. The cone pulley is still worn but I guess 0.002" doesn't give much room for things to slap about.
I just cut two circles of 0.003" shim and put them between the cone and the bull gear and checked to make sure the bull gear pin still engaged. All good.
![IMAG0505[1].jpg](https://www.practicalmachinist.com/forum/data/attachments/153/153977-8f505aae8f63b3db40208183d1c5e4c0.jpg "IMAG0505[1].jpg")
![IMAG0506[1].jpg](https://www.practicalmachinist.com/forum/data/attachments/153/153978-d595f9eb93ae4c600d1b4f847a7733ca.jpg "IMAG0506[1].jpg")
I think it is probably better to shim between the pulley and the thrust bearing and not the bull gear so I may change that, but the end result will be the same.
At any rate, an excellent result for a couple of hours work.
Lathe is much quieter so now I have loads of other noises to worry about! :-)
Greg.
My '41 10L spindle cone pulley has been rattling like an old freight carriage. The pinion gear end seems pretty good, but there is a lot of wear at the bull gear end.
Ted's response re clearance in the following thread was very interesting:
http://www.practicalmachinist.com/vb/south-bend-lathes/help-knocking-cone-pulley-219781/#post1517927
I had the spindle out to check whether the large end of the cone was bushed or plain CI (I couldn't recall) so I thought while it was apart I'd shim it up to get it back to spec. Mine was 0.008", not 0.002". It has made an *amazing* difference. NO rattle at all and much less play. The cone pulley is still worn but I guess 0.002" doesn't give much room for things to slap about.
I just cut two circles of 0.003" shim and put them between the cone and the bull gear and checked to make sure the bull gear pin still engaged. All good.
I think it is probably better to shim between the pulley and the thrust bearing and not the bull gear so I may change that, but the end result will be the same.
At any rate, an excellent result for a couple of hours work.
Lathe is much quieter so now I have loads of other noises to worry about! :-)
Greg.
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