Help with stuck ferule in brake boss

[BLD 25]

I noticed a couple weeks ago that the alloy brake ferrule had corroded and got stuck in the brake boss. I rarely ride in the rain, and I try to promptly clean it and use spray wax.

http://i9.photobucket.com/albums/a83/Bdavis16/Mobile%20Uploads/IMG_20170210_195025128_zpsiwvzsyk6.jpg (http://s9.photobucket.com/user/Bdavis16/media/Mobile%20Uploads/IMG_20170210_195025128_zpsiwvzsyk6.jpg.html)

Anything I can do? If I leave it, will it eventually rot away leaving me without a rear brake? Can the boss be replaced?

Thanks

[Ralph]

Knock the ferule out from back side. Forget wax....wash off sweat and use WD 40 after ride and sweat....or something similar.

[dustyrider]

PB blaster and go to bed. Knock out from opposite side with a drift-like tool. You're welcome!

In order to prevent, you've got to do preventive maintenance.

[BLD 25]

Got it, thanks. I will slather some grease in there this time.

[Peter P.]

Run some sandpaper in the ferrule to clean it up before you reinstall.

I had to do this with a couple braze-ons which were oh so slightly undersized. It took time, but it worked.

[jc031699]

I've pulled a ferrule out of a campy shifter (bought it with a stuck ferrule that wasn't advertised) by screwing a perfectly sized machine screw into it and then pulling it out with visegrips. If you need leverage that would work here too

[Fatty]

Got it, thanks. I will slather some grease in there this time.

Probably not a bad idea. Especially if there is any paint loss inside the boss.

[bikinchris]

if that is slotted, a flat screwdriver should do the job of removing it.

[thwart]

if that is slotted, a flat screwdriver should do the job of removing it.

This.

Then clean it up thoroughly with a small cone wire brush or similar, primer, then paint. When you reinstall the ferrule use a liberal amount of grease.

That stop looks significantly corroded. Sweat is the most likely culprit.

[Erik_A]

Just grab it on the outside edge with a pair of needle nosed pliers and twist it out. It may rip, but you can just peel it out in pieces.

[ultraman6970]

I would try to hit it from the back with a Phillips screw driver first. Then pliers.

Is always good to clean the bike with a rag after every ride so stuff like this doesnt happens. Even more if the bike is in a trainer and the rider sweat like crazy.

[jc031699]

Is always good to clean the bike with a rag after every ride so stuff like this doesnt happens. Even more if the bike is in a trainer and the rider sweat like crazy.

A good use for the dregs of your water bottle post ride... hose off the sweaty stuff.

[cadence90]

Some WD-40, etc., and then the correct size ball end of a hex key...tap tap gently from the back side.