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Discussion Starter · #1 ·
Hi,

I’m looking for some technical help. I have a John Deere 60 heavy duty broom that we use for snow removal on sidewalks where I work. After a few days worth of use the set screws that hold the resrdrive gear onto the rotating shaft are coming loose. Would anyone have any advice on what could be the cause of this? Or how to prevent it from happening? Is it maybe a matter of technique? I always make sure the brush is fully stopped before putting it back onto the sidewalks before starting it again. Any suggestions would be appreciated. Thanks in advance!
Here’s a photo of the set screw and small drive gear.

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I think I would replace that set screw with one that has a bolt head, or at least a new set screw and apply some loctite to the threads. Also wouldn’t hurt to inspect the key and keyways.
 

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Discussion Starter · #5 ·
It slides onto the shaft and has a square key that fits into the groove that is cut out of the shaft and the gear. After that there’s a snap ring that locks it on. But maybe I missed something?
 

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