Part 2: 1962 Johnson 10 Hp Lower Unit - Seal Removal and Fixing Set Pin

[@RetroVertig0]

The bushing has a hole that needs to mate with the roll pin so it won’t spin. Often what happens is that a previous job does not account for this is mushes the factory pin flush. Installing the roll pin is a way to rehab the pin that was pressed flush. You could probably get away without installing it, but there is a bit of risk. Hope this helps.

[@marcoflores5181]

Thank you. I'm currently following your videos step by step. I have everything done except for the shifter seal. I'll need to get myself some tap and dies

[@marcoflores5181]

For the shift shaft seal. Basically I need to tap a matching thread for a long bolt? That bolt will screw into the brass bushing-- then I'll hammer the bolt to pop the brass piece out?

[@RetroVertig0]

Yes. Once you get a bolt into the bras bit, you can flip the hole unit over and drive the brass out with a rod. That will give you access to the seal. You can reuse the brass as well. The newly added threads will have no bearing on functionality.

[@marcoflores5181]

So why do we put the roll pin on?