Halliburton Ambassador Combination Lock

[FXAdam]

Hi,

Does anyone know how to set or adjust the combination lock on a Halliburton Ambassador?

I have a used Ambassador and the lock doesn't do anything. I can set it to any numbers and it always opens.

I can see the back of it and there looks to be some kind of switch mechanism but it doesn't seem to move. I don't want to mess with it too much at this point in case I bust it or end up setting the combo to a number I don't know or something.

Any help is appreciated.

Thanks.