Internal cable routing noise

Ride hard
Ride hard Posts: 389
edited September 2012 in Workshop
Hi all,

I washed my new steed yesterday for the first time and I've now noticed that the the rear brake cable (routed through the top tube) is making a rubbing noise when the brake lever is depressed - almost like it needs to be lubed.

My question is how do I solve this since the cable is not accessible?

Much obliged.
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