What I saw in the image was there were tabs, which held the gear case together. I have redone Atlas trucks, esp with Kato RS-11s and RS-3s to remove the traction tire wheel sets.
Briggs uses the same or there about design, with tabs tying the gear case halves together. When the post office delivered the Briggs set the tabs which tied the gear case halves together were broken, and I had 4 separate gear case halves instead of 2 gear cases.
I either need new gear cases, or I will have to try to replicate the tabs to have a complete gear case, not halves. But they will have to wait as the arthritis in my hands is acting up due to the weather.
So does anyone have Briggs gear cases for the Dofasco trucks they would like to sell me?
Bruce