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.

I have one in my IO-360. It was a real &*($% to get out!!!! We finally
got it out with an "EZOut". Kind of like a nasty drill bit that grabs
it. It did not come out easily. As I recall though the plug has some
depth to it so you won't drill though it too quickly.
I initially thought I'd just try somewhere else after seeing how hard
it is. However, Lycoming said that was really where you want it
because...
1) Its very close to the factory probe temp so you don't need to come
up with a new yellow/red line
2) Its a low pressure area so a leak wouldn't be as nasty as some of
the other plugs.

-Robert, M20F