How is the damper plate bolted on?
Is there any play up, down, sideways as in can the plate move around on its mounting?
My own setup, Palmer IH 392 from 1970 is still on its original dampers. When I went looking for them online, they look just like those used in Detroit Diesels, they are held on by a circular periphery of many bolts on its edge. I too have wondered about alignment issues as it seems there must be some tiny amount of slop that exists, but AFAIK
, it never caused me a problem.
If the plate is off center, then as it spins around, there is going to be a small amount of up and down movement relative to the shaft. My own plate looks like a clutch plate, with a loose central hub and springs arranged in a circle, so maybe that system can handle being misaligned. I did pour gear oil on the whole thing when putting it together, as it has moving parts.
It looks like this one for a DD