Part of Lesson Plan: **Remove and Replace a Valve (updated) by Steve Nagle

Activity Overview / Details

After concluding that the valve is serviceable, remove any carbon deposits with a wire brush. A pedestal  grinder with a wire brush works great.   If the deposits are hard to remove with a wire brush, I have used an old valve as a chipper to knock off the hardened deposits.

Wire brush the face area.  If using a power brush, use caution and brush on the downward side, tilting the valve head a bit so the brush doesn't grab the valve out of your hand.

Do not attempt to glass bead a valve unless you protect the stem with a tight fitting piece of rubber hose. Removing the polished finish will shorten valve life.