Ok I have a confession to make. This is not a miata rack. It's for an old VW rabbit. However, this is the best technical forum I know, and the only one (besides rx7 club) that covers this process well.
So anyway, I'm following the miata instructions for depowering a rack, and it's actually almost exactly the same. I'm about done, but now I want some advice from you experts.
On the pinion shaft is a seal assembly. there is a very slight amount of play between the shaft and this seal barrel.
I don't see a separation between the pinion and the quill shaft, and this rack either does not have one, or it's underneath the seal.
I think I'd like to remove the seals similar to the way you do it on the main shaft of the rack, but I wanted some more experienced eyes to take a look at the shaft before I do anything stupid. I appreciate your expertise.
Take a grinder to it? leave it alone? There is a metal cover and o-ring seal that slides above this one to keep crud out of the rack, I believe this seal assembly is simply for power operation.