I received an R-SYS SLR from a customer for service.


The shop where they bought it was somewhat unreliable, so they wanted an inspection.
The rear wheel had centering issues.
Before re-pressing the freehub body, I confirmed the centering was spot-on
with the customer present, but
once the freehub body was pressed on, it shifted quite a bit.
This is a rear hub-only phenomenon.


I didn't take a photo before cleaning, but I cleaned out the rear hub internals thoroughly.
But more than that...


What in the world is this?
From the fact that only the rear hub was this dirty,
I figured out what chain oil they're using.
That particular oil requires degreasing the chain before application, so
the protective film formed by that oil
means the sprocket should probably be left alone,
so I didn't wash the sprocket this time.


All cleaned up!