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Am I the only one who keeps seeing people torque lug nuts dry on regional jets?
I was helping a buddy swap a wheel on a CRJ200 last Tuesday and noticed the last guy never put any anti-seize on the studs. Then I looked at the manual and it clearly says to use it. We had to beat that wheel off with a sledge. Why is skipping that step so common? I've seen it three times now in two different hangars. Has anyone else run into this or am I just unlucky?
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nathan19322h ago
Right because nothing says "good maintenance" like dry torquing lugnuts and hoping the next guy enjoys a full body workout with a sledgehammer. I bet that wheel came off about as smooth as a cat trying to skateboard. Always love it when the manual's "suggestion" turns into a real life test of your shoulder joints.
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nancy8201d ago
That torque value in the manual assumes a dry stud. Put anti-seize on and you're actually overtightening because the lubricant changes friction. You're not supposed to use anti-seize on fastener threads that have a torque spec written for dry conditions unless the manual specifically says to. Some regional manuals don't even mention it for lug nuts, just the wheel bolts. If the last guy banged it on dry and it stuck, maybe he was following a different revision or a different aircraft's spec. Maybe look up the actual torque value for lubed threads before blaming him.
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