Originally Posted by
phteven
I'm overhauling a 1988 Trek 400T, and I'm wondering about some of the headset. The adjustable race and lower headtube race look fine, but the upper headtube and crown race have rough edges along the bearing groove which are a coppery colour, rather than a smooth steel groove. Photos aren't great but I think they show enough. It doesn't seem to be false brinelling.
Thanks!
https://imgur.com/a/ilzPk
REPLACE it... it's already through the hard-chrome, and will just get worse... when chrome is applied, the metal is first plated with copper, then chromed/polished.... and it's evident in the pics that the chromeis gone from the bearing surface of the top race... REPLACE it.