AMuzi wrote:

Today there is a Shimano 3 speed Nexus back
hub with a very unpleasant noise whenever
one breaks with the coaster. What do you do?
Pick apart and lube even tho that goes
against intuition?

Yes. Until and unless you can identify the
problem you can't rectify it.

Well, one can do like the scientists: try
different things and see what happens

--
underground experts united
http://user.it.uu.se/~embe8573