OH Boy! The fun starts now. You’re going to have to completely disassemble the Hopper. Disconnect the wires from the Payout switch, take a picture of the switch wires before you unplug them so you know where they go on the switch, unless you’re going to replace the switch, the new switch wires up a little different. Remove the 2 screws on each side of the Hopper and the screw in the front and slide out the motor/bowl assembly, unplug the 2 wires on the bottom of the Hopper bowl, one is White and the other is brown, they for empty sensors. Once you get the Hopper/motor assembly out remove the 8 screws that hold on the bowl, if the bowl has a groove worn into the bottom of the bowl replace the bowl. Set the Hopper motor mount on 2 blocks so the motor is hanging free, use an impact driver to loosen the screws. Once you get the screws out and have removed the wheel, loosen the set screw for the hub, sometimes it takes a while to find the set screw, it’s a 3/16” set screw and remove the hub, you can use two of the 10-32 screws that came out of the corners of the Hopper bowl to help get the hub off, gives you something to hold on to has you turn to get it off. Once you get the hub off you can remove the 4 screws that hold on the motor, look at the motor mount if it’s got a groove worn into it from the wheel or is cracked replace it. Install everything in reverse order. Here’s a couple of tips, turn the motor shaft so the flat part of the shaft is at the bottom of the motor, check fit the hub on the new motor before you put the motor in, if it’s too tight use some emery cloth to clean it up so it will slip on freely. Put the wheel back on the hub before you put it back on the motor shaft. Once you put the wheel/hub back on you want to have about .008 - .010 clearance between the motor mount and the wheel. I’ve done hundreds of these, if you need any more help PM me.