I have a few brass cleanout plugs on cast iron risers, they probably have
not been opened in 30 years and would not come out. I tried a 18" wrench
and even a chisel with a hammer to try to drift it open and it would not
move an inch. Soaked with WD-40 let sit for an hour tried again no luck.
I think my only option left is a desctructive method.
Can I drill a hole and start a cut with sawzall to cut a piece out (like a
slice of cake)? and then use a plier to pull it out once a slice is
removed? I don't care about the plug I can replace it with PVC plugs, but I
don't want to destroy the threads (or whatever threads are left).
After you get it real hot, squirt some penetrating oil on the seam. The
chilling effect of putting the penetrating oil on the hot metal causes it to
suck the oil into the threads. Did this many times in my fathers auto repair
shop to get rusted parts apart without damage. Then heat again and use a BIG
wrench, possibly with a pipe a few feet long on the end of it. If that fails
destroy it and replace it.
futilely to open up my basement floor drain, he didn't even try
wrenching them. He just whacked them on the edge with a drift and a BFH.
They popped right out, visibly potato-chipped. Maybe you need a bigger H.
Yes use a hammer on the edge of it a few times soak in wd40 then
tighten a then lossen , if no success use chisel on very edge of plug
and hammer it out replace with abs plug use vasiline on the threads to
stop this problem .
I don't care about the plug I can replace it. But I cannot get it out no
matter what I tried. I did not hammer it REAL hard I didn't want to crack
the cast riser and turn this small problem into a bug problem.
There is no edge exposed in that the plug is recessed deeper than the edge
of the riser, the only access I have is from the top, and it has a square
knob but my largest plier would not even do anything.
Sorry to not answer your original questions...yes, you can cut the
I use saw cuts at 10 o'clock & 2 o'clock
Make cuts only deep enough to just kiss the the cast iron. The
chisel, pry or twist the pieces out.
When you install the new plug, use a soft set dope compatible with the
plastic plug (or use brass)
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