frazampo

I eventually managed to do it! Thanks a lot!

Hi everyone, thanks a lot for this very useful thread! I would like to ask a question. I have a motor that is perfectly functioning, but one of the main wheels (on the right in the image) recently broke down. The plastic element in the middle broke. I have the broken wheel and the metal pin. Following the suggestion of @Bloodwave above, I bought a new wheel (on the left in the image) which is supposed to be a middle-type wheel. This wheel has a metal pin too. I would like now to remove the plastic element in the middle of the wheel so I can mount it on the motor. I tried pulling it with a screwdriver or some pliers, but I can't. Any suggestion? Thank you very much!