Old timer at my first shop swore by dielectric grease on every connector

Honestly, my first lead tech, Jerry, told me to smear dielectric grease on every single connector I touched back when I started 8 years ago. I did it religiously for like two years on everything from pitot-static lines to nav antenna cables. Then I found out he was wrong about half of it because some connectors actually need dry contact for proper grounding, and I spent a weekend cleaning out a bunch of greased up cannon plugs on a King Air. Has anyone else gotten bad advice from a senior tech that they followed way too long?

2 comments

2 Comments

torres.sage25d ago

Keep sticking with Jerry on this one, dielectric grease on cannon plugs is actually fine as long as you don't glob it on too thick. A thin layer helps keep moisture out and stops corrosion way better than dry connectors ever will. The grounding issue people bring up is mostly a myth for standard aviation connectors since the pins still make solid contact through the grease.

susana6625d ago

Dielectric grease is legit, I've been doing it for years with zero issues.