My '94 Kwikee 2-step is bolted to a plate with 4X 1/2" bolts. Over time 2 then 3 of the bolts rusted through and broke due to the stresses placed on them when using the steps. Removed the entire assembly and serviced everything. Since it had broken free and swung hither and yon, had the gear case open up too. So that needed repair. I used heavy duty zip ties to hold it all in place until I could get to my own garage.
Luckily, no gears where broken, only needed to straighten an arm, drill out a busted bolt or two on the gear assembly and add a few new bolts to hold the entire assembly to the RV.
Removed the motor and cleaned it. Made it all nice and pretty. Cleaned the gear assembly, greased it up. Used contact cleaner and a small brass brush to clean all connections.
Did not have a bad motor. But I've learned that you can take the old motor into Napa and they'll replace it with a window opener/closer motor. I believe the gears inside the gear box are all standard size too. It looked pretty stout to me when I was in there.
I'd recommend you take it off the RV and service it where you can get to everything for inspection.
Good luck!