Phil Nelson
A&P-IA, Maintenance Instructor
KF 5 Outback, Cont. IO-240
Flying since 2016
Wish I could draw what I’m talking about. Think of a standard washer with the outer od large enough to
cover the probe, plus some. Grind a flat on the od of the washer so you need to index it on installation.
The flat keeps it from turning.
Now think of the same washer with a step that fits the ID of the probe, thick enough to not quite extend all the way through. When you torque the probe down the probe tightens, then the step contacts the surface to protect the probe from over crush. Hope this make sense
Thanks for all the advice. It looks like using a clipped oversized washer did the trick. It prevented the probe from being spun about its center axis and it stayed intact.
CHT Probe Completed.jpg