Can anyone tell me if this is normal?
09-01-2018, (Subject: Can anyone tell me if this is normal? ) 
Post: #2
RE: Can anyone tell me if this is normal?
The blue colour your seeing is from Cummins heat treating the crank at the factory. It looks very good to me and is nothing to be concerned with. If you would be installing new bearing then i would polish the journals a bit.
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 Thanks given by: PeteMelb


Messages In This Thread
RE: Can anyone tell me if this is normal? - Starlight - 09-01-2018



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