Sundstrand Tranny Question

[wallfish 17,079]

These tranny pics are from a

[wallfish 17,079]

Answer to my own question

After thinking about it and looking at the pics again, mabe a PO added this because the hub would keep slipping into the seal, causing it to leak.

[kpinnc 12,429]

You probably nailed the reason- you will probably find the hub has a groove worn into it where it was rubbing the case, which would allow it to "dig in" to the seal. The newer Eaton transmissions used a thick low-friction plastic washer to prevent the same thing from happening.