Unfortunately these trains are not the typical remove 2-4 screws and swap out the wheels. They are pretty complex. Things fall out, wires come off, etc... WAW, if you do go the route of disassembling he train, please refer to some other BPT threads here to help. While the gears may be in other trains, they are smaller than normal, thinner that is. In all of my searching I never found a good replacement and went with the larger gears then reduced them down.
The allure to these trains for me was initially the challenge of fixing them. I also love the sounds they have.
The allure to these trains for me was initially the challenge of fixing them. I also love the sounds they have.