Thanks Bill!

You're exactly right, you really know your stuff.  I ordered the chassis so hopefully the train will be under the tree for Christmas.

Thanks Bill!,

Im gonna go ahead and do it myself.  I had fun working on it honestly.  Do you know the model number I should order? I looked at the chassis under the parts section but im not sure which one is the replacement for the 90015?

Thanks Loco Bll!

Would you recommend buying one and doing it myself or sending it in to the company? I believe it is a lifetime warranty but im not sure what all is covered.

I have train my dad got me when i was born and it doesnt work correctly.  The motor runs but makes a very bad clicking noise when it runs.  I took the wheels off so it was just the three little drive gears attached and it made the noise.  When i take the gears out so its the motor by itself it sounds great.  I want to replace the drive gears but all i can find is a gearbox version.  Mine just have the three gears pinned right through the side of the train frame.  Anyone know where i can find these?  The train is a model # 90015 G scale big hauler from 1990