"Robert Little" wrote in message
...
I hope that you didn't use a steel wire brush to strip the corrosion. The
steel wires of the brush embed into the aluminum and the dis-semilar
metals
start electrolysis (corrosion). No matter what kind of paint or chromate
you
use won't get the steel bits out and the metal will corrode under the
treatment. Ever wonder why some simple things associated with an aircraft
require an A&P's knowledge to do correctly? AC 43.13-1B addresses the
correct treatment very well. R Little

Same for steel wool.


"nobody" wrote in message
. ..
How often do you check the battery in your PA28? I don't remember ever
checking it except at annual. We just had paint and new interior done.
When the interior shop pulled the back seat they found where the battery
had overflowed and begun corroding. I wire brushed everything to bare
metal and sprayed some corrosionX on it. That should last until the
annual and we'll get a new battery box.

Side question; There is some expanded fiberglass insulation under the
back
seat, next to both the port and starboard wing root rib. It looks like
standard construction insulation. The insulation on the starboard side
had absorbed some of the battery overflow so I threw it away. Am I
going
to die because I just tossed some hypercritical piece of the airframe
away? Does anyone else have this insulation or did this come from a
previous owner? Anybody know specifically what the purpose of the
insulation is (thermal, sound, ???) ?

Thanks in advance,

Eddie
N40008