Bachmann Geared Steam Climax

[Schraddel]

Hello,

these fine locos are plagued with cracked gears. But not only the bevel pinions in the trucks are prone for cracking. There is a tiny spur gear deep hidden in the center gearbox. Here i post several photos to show in a step by step manner how to get there:


It's 3-Truck Climax with Walschaerts valve gear. The trucks are simply fixed by snap fasteners like in textiles. They can be easily clipped off.


Remove the 2 screws on the bottom plate of the center gearbox. And lift off the cover.


Remove output shaft.


Unscrew and remove valve gear on both sides.


Lift out jackshaft.


The boilershell is fixed with 4 screws:
2 unter the cab sides.
2 under the boiler.


Unscrew the small PCB and pry off gear cover.


Remove motor screws and motor.


Then you get acess to this screw hidden under the motor. Remove it.


Then you are able to lift out the center gear box.


Beware of the strutted frames. They are partly mounted on the gear box and have to be removed there.


Remove the screws on the side of the gear box.


Lift out this gear shaft.


Look an that! This is the faulty piece, a cracked spur gear (10 teeth, Module 0,5, shaft diameter 1.5mm)
Only the first releases are concerned. Later Bachmann made the little spur gear out of brass.
Remounting is in reversed order.
Hope this is helping somebody.

Lutz