If it’s a schwintek, you access the screw holding the motor from the outside and remove the motor from the inside usually requiring removal of the trim if it’s close to a wall. The biggest fault of the motor is the hall sensor mounted on top of the motor which you have to buy the whole motor to fix. The motors come in 2 different gear ratios, so make sure to replace with the right one. Black top is 300:1. Here is a motor that works just fine when I bypassed the sensor.
2016 Jayco Precept 31 UL