Yes,you have it. Since this is old I will keep trying because I have a 2021 case.thank you so much,EVERYONE is so helpfull eventually I hope we find onevanAh, you're talking about the planetary gears attached to the drive motors.
They have nothing to do with the lift arms, that's what was confusing about the original post.
If those have gone bad, you'll have a very hard time replacing them.
They were only used for a couple years.
Your best bet would be to buy the newer style motor(s) and just replace them.
The newer motors do not use planetary gears since they are geroler motors.
They just bolt directly to the drive sprockets.