Hi All,
It looks like a big proportion of the bush is "lost" when a seal is fitted ?
Earlier this year I was working on an A10, trying to reduce the leaks, I had to remove the inner case to renew the breather cork washers, when I did I found the idler/ dynamo drive shaft well worn , same with the bush
It had a 15mm wide belt drive to the dynamo , I wonder if this contributed to the wear ?
Anyhow I would be reluctant to remove bush material
My own SR does not have a cork washer behind the belt pulley, there was no room to fit it
It does not leak oil into the belt /chain compartment
I am currently rebuilding an Ariel Huntmaster engine, It had been running away(happily ?) without any shimming of the crank
it had 32thou endfloat
There was no cork washer on the breather either
The reason for the rebuild is accident damage
John