Taz 3 Bearing Sliding out

So I just got a used taz 3 and the solid polymer bearing on the bottom right size keeps sliding down and popping off the double bearing holder when moving the z axis. How do I fix this? Kind of new to 3d printing.

You will eventually want to re-print that bearing holder, but for now you can wrap tape around the bearing to increase the friction against the side of the holder to get it functional until you can print a new one. Also inspect the bearing holder to make sure it isn’t cracked. if it is, you can glue it with plastruct plastic weld, hobby model cement or acetone.