2-8-0 Large scale consolidation

[john chumbley]

My Bachmann 2-8-0 would not run, although I could hear the motor turning over . I rang Bachmann in England and ordered a new gear box.

The problem is that the new gearbox has a lot of play in it. To get it to run ok I have to put a thin piece of card between the gearbox and the plate that it butts up against. the z shaped piece of metal that holds the gearbox in place doesnot hold it tight enough.

Can someone give me some advice on what's wrong?

[russm]

On mine the gear box was fine, it was the drive gear on the axle that had a crack.  If you have removed the gear box at one time to check, make sure that you line up the two seals/bearings with the gear box or it won't hold in place.  Those are on each side of the gear on the axle.