Kroil probably won't work if it has never seize on the threads but it
can't hurt to try. If it's really stuck it's probably faster to pull
the prop and ring gear than to mess things up trying to work around
it. Flying long enough to get the case fully warmed up may help too.

Thanks for the offer, but I'm in Wisconsin. Getting anything "straight on"
to the plug is going to require pulling the front engine baffle, and even
then the ring gear may be in the way, so for now, it's going to wait while I
finish the rest of the install and collect more insight on the problem.
Jim

"Robert M. Gary" wrote in message
oups.com...
BTW: I can't remember if you're one of us from Sacramento or not. After
our initial failed attempt to remove the plug we took it to a guy who
teaches and lives next to Sacramento Community College Aviation (at
Exec Airport). He used the EZ-out from his fly-in driveway.
Email me if you want his info.

-Robert


Jim Burns wrote:
For those who have installed oil temp probes in the forward oil galley
of
their Lycoming engines, how did you or your A&P remove the 1/8" NTP
plug?
I've got one that is stuck tight and I don't want to booger anything up
trying to get it out. I've heard horror stories of people having to
drill
them out because they are stuck but I'm wondering if an impact driver
could
be used without causing any damage to the case.

Any experience or thoughts would be appreciated.

Jim