I have a 1947 vintage 13 inch SB with the single stumbler quick change gear box.
I don't use the quick change very often, but today when I used it, the longitudinal feed seem to work like normal, but the gears were very noisy.
I would describe the sound as a "rattling".
Before operation, I did add the Type B oil in of the gits oil caps on the quick change gear box.
I then tried operating the quick change in several different feed ranges and the rattling noise was present in all of the ranges I tried.?
Is this rattling noise indicative of a mechanical problem developing in the gear box or is it just a lack of lubrication on the gear teeth face??
If mechanical any ideas as to where to look to diagnose?
If a lubrication issue, should I also be adding lubrication to the gear faces??If so, what type of lubrication is recommended?
Thanks.
