Bushhog and how keyways work
 

Took off the stump jumper and blades off my old bushog. In the shaft at
the bottom was a piece of metal I assume is a keyway. Although the only
key ways I have messed with were square. (This was an odd shape).

How would this key way hold the stump jumper on? In the stump jumper I
could not find a "notch" I would expect for the keyway.

Any help would be appreciated!

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ups.com...
Took off the stump jumper and blades off my old bushog. In the shaft at
the bottom was a piece of metal I assume is a keyway. Although the only
key ways I have messed with were square. (This was an odd shape).

How would this key way hold the stump jumper on? In the stump jumper I
could not find a "notch" I would expect for the keyway.

Any help would be appreciated!


I'm having a hard time understanding exactly what you found, but I can't
help but wonder if the "stump jumper" was keyed with a Woodruff key.
They're a half moon kind of device, slightly less than a half circle.
Where I'm having trouble is your inability to discern the keyway inside the
stump jumper. The Woodruff keyway is typically cut in the shaft with a
circular cutter that matches the radius and width of the key used, which
then holds the key captive once the parts are assembled. The only way to
get the key out is to remove the outer component. If it was to shear
cleanly, it could leave each portion in the respective components, so you
might not easily see what you're looking for, although that would be a long
shot. They typically don't shear cleanly, leaving at least a witness line
that helps you find them. Further, the key is usually not as long as the
slot in the outer component, so I would be surprised if the shorn key would
completely mask the location. Pictures?

Harold