Under this governor shaft nut, is the leak that started this whole project. The o-ring was brittle. When I took it off of the governor shaft, it was stiff and then it cracked. I got the nut loose. The shaft itself was 2.6 turns out from being fully seated. One of the forums says that it should be bottomed.

Somewhere I found a post that showed a tool ground from a flat blade screw driver that will remove the front seal. I just wish I knew which site.

Here is another tool ground from a screwdriver. Here is the site that it came from.

The engine tag from Cummins. The engine number is required for ordering parts.