December 2003

A 19:1 REDUCTION GEARBOX

The latest MO motor with the triangular shaft has an interesting accessory, the 19:1 reduction gearbox, part number 760.

The gearbox that I own made a terrible racket when running.

I thought that there might be a burr on one of the gears or a broken tooth somewhere.

I decided to open it up and see what the problem was.

Part Number 760, a 19:1 reduction gearbox for use with the latest Triangular shaft MO motor.

The gearbox is held together with 8 small self tapping screws, four on the front cover and four on the rear cover.

I removed the rear cover first followed by the front cover

The rear cover removed.

Once the gearbox was apart I inspected the gears for broken teeth or burrs.  There was no grease on any of the moving parts inside the gearbox. I decided to put graphite grease onto all the gear 

teeth and onto all bearing faces  

The front cover removed.

The gearbox disassembled and ready for inspection.

Next I reassembled the gearbox.

Reassembly is straight forward and presented no problems.

I reinstalled the gearbox into the model which is the Special edition locomotive mounted on a stand so that it can be run as a display model at exhibitions.

I have now clocked up more that 150 hours of  constant running at exhibitions in the special edition loco and  the gearbox (and motor) is still running smoothly and quietly!

TIPS    HOME