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Subject:??? LUG NUTS & FRETTING CORROSION???
From:Rico Sapolich
Date:Mon, 4 Sep 2000 14:47:09 EDT

What can be done to ease the removal of Vanagon lug nuts?  I have always had
a bitch of a time taking off the lug nuts.  I think this is caused by
fretting corrosion whose effect is compounded by their metallurgical
composition and heat treatment.

I have installed the lug nuts dry and tightened with a torque wrench; I have
cleaned the threads scrupulously and used antiseize (Fel-Pro & Neverseize) at
assembly; I have sprayed them with PB Blaster when removing them.  No matter
what, they are a son-of-a-bitch to remove.  How tough is it?  Well, I use the
largest, high quality metric 4-way I could find.  I am far from a wimp-ass
and still I have to use a cheater and say a prayer.  Once, I had to take a
2WD to a garage to remove the front lug bolts.  The mechanic hammered on them
for about 20 minutes with an Ingersoll-Rand (no junk tool) impact wrench.  On
a couple of them we even had to heat them to cherry before they would give up
their hold.

From what I know of fretting corrosion, I am confident that this is the cause
of the problem.  The lug nuts finally release their tenacious grasp with a
start, accompanied by a sharp retort and a puff of reddish brown dust.

My references all talk of measures to take to reduce fretting in order to
maintain fatigue life.  All I want is to be able to remove my wheels in a
predictable manner.  Any suggestions?  No, I am not going to carry my cutting
torch in the van and I already have a AAA membership.

Rich