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Old timer at the hangar swore by using a dab of grease on the O-ring for those stubborn B-nuts

He said it would stop them from galling up, and after fighting with one on a Cessna 172's fuel line for an hour, I gave it a shot. It spun right on smooth as butter, no leaks after a pressure check. Anyone got other tricks for those finicky fittings?
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2 Comments
jesse84
jesse845d ago
Ever try a drop of light oil instead?
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shane_ross
Wait, oil in the coffee machine?
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