ON30 GEAR REPAIR INSTRUCTIONS COURTESY OF BIG LARS AT THE RAILROAD LINE FORUMS. 

Updated: Biglars aka Larry's Bachmann gear fix links.

Climax/ https://railroad-line.com/node/28697

Davenport/ https://railroad-line.com/node/28753

Rail bus/ https://railroad-line.com/node/28412

Rail truck/ https://railroad-line.com/node/28687

Shay/ https://railroad-line.com/node/28869