@RickO posted:I was disappointed to see this gearbox in nearly everything these days,even articulateds. On my H10, the worm gear shoves the secondary gearset over so far only 1/4 of the gear face makes contact with the axle gear.
I have added a shim in the gearbox since these h10s have a removable bottom plate, but I refuse to purchase any more locos with this complex gearbox.
I actually was able to fix one of the K4 models with shims inserted from the top. It was a bit of a PITA, but I managed to keep the gear in place and AFAIK it's still running. The next one I think I'll pull the drive block and flush it with carb cleaner to get all the grease out, then use retaining compound on the gear to see if that works.
I'm going to check my H10, it hasn't run much, but I'd like to head off that issue before it happens.