We have not had a failure like that and we are not inspecting so far the expansion bellows in the manifold internally just visual externally but this will not help if the inner sleeve is the one that is coming apart.
Will take a look in the next opportunity if there is a port we can use for video-scope the inner sleeve.
I could not find the bulletin that Austin is refering in the wartsila portal we have. Can you please email it to me?
Ruben Tellez.