My hangar chief said I was crazy for using a heat gun on a stubborn connector

We had a 737's main radio connector that wouldn't budge after a salt spray cycle, and everyone said to just keep pulling. I gently warmed the housing for about 30 seconds on low, and it came right off without a single pin damaged. Has anyone else had to go against the book for a stuck component?

4 comments

4 Comments

hollywhite2mo ago

You mentioning the CRJ manual is a real eye opener. I was totally in the "never add heat" camp for years, thought it was pure hack work. Then I watched an old timer free a seized landing gear micro switch on a King Air by warming the case with his bare hands for a minute. No tools, just body heat. It clicked for me then that a little warmth just breaks the bond, it doesn't melt anything. I still wouldn't grab a torch, but a heat gun on low? That's just smart physics.

bennett.harper2mo ago

Our manual for the CRJ series actually lists controlled heat as an approved method for stuck cannon plugs.

corap2110d ago

Pulled a cannon plug out of a Dash 8 once that had been stuck for two years. Ended up using a small electric heating pad wrapped around the connector for about ten minutes, just like @hollywhite said about controlled warmth. That gentle heat was enough to break the corrosion bond without melting anything, and the plug slid right out. No special tools, no torches, just patience and a little physics.

irisowens2mo ago

That body heat trick @hollywhite mentioned is so key, it shows how little warmth you actually need. The manual backing it up just proves it's about controlled application, not brute force. Really changes how you see those "never ever" rules.