Bull gear and Quill gear each missing a tooth. (Need advise)

Al 1

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Upon cleaning a recently acquired Heavy 10 I have found the following ( a missing tooth on two gears. Will this run with one tooth missing from each gear. Or just install new gears. Advise would be helpful. Thank you, Al.

IMG_2883.JPG
 
Under light load, the gears will probably engage adjacent teeth enough so momentum will take them past the missing tooth.

With one tooth missing , I would expect that you would break additional teeth under load.

If it were my lathe, I would replace the gears if possible.
 
It is easier to repair if only one tooth is missing.
Replacement might be done at anytime. However, I wonder if it will also be unnecessarily hard on the gears with which it is supposed mesh.
As long as you have it apart it might be a good opportunity to replace bearings and etc.

Daryl
MN
 
I agree with replacing. I just got into removing the bearing caps. I want to remove the old bull gear before finding a used gear on flee bay. Looks like the oiler on the front/right side is in the way of the Pipe plugs where your supposed to insert a wire and hold the felts in before re-installing. Any ideas on that oiler?
Thanks for your replies, Al
 
How do teeth get broken on these big gears anyhow? Abuse? Big chunk of swarf stuck in there? I always wondered.
Mark S.
 
It's a common problem on SB9's. It comes from putting the lathe in back gear and trying to impact off a stuck chuck. The gears are getting harder to find on Ebay. If you have access to a OA torch, it's not a difficult fix. But fix or replace ASAP. Those missing teeth are going to cause wear on other gears.

Randy
 
Both damaged gears are removed. Like Randy said, The 10 H bull gears are not as common on Ebay. If I do not find the proper fit gears I will have them repaired. Thanks for the Replies. Al
 
On my 10 L I was able to turn the oil holder c/w enough to insert the wire to hold down the spring wick.
Then turn back c/c until straight up, no leeks
 
I did turn the oil cup about 1/4 turn and was able to remove the screw and insert the wire.
Al.
 
I agree with replacing. I just got into removing the bearing caps. I want to remove the old bull gear before finding a used gear on flee bay. Looks like the oiler on the front/right side is in the way of the Pipe plugs where your supposed to insert a wire and hold the felts in before re-installing. Any ideas on that oiler?
Thanks for your replies, Al

I cut the oiler of with hacksaw then removed the threaded section repaired with silver solder then added a brass spacer I machined so can remove any time and all good


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