[RE-wrenches] Battery Post Galling

[benn kilburn]

William,Luckily, the battery was new and under warranty and the mfgr, Surrette, was very helpful and immediately offered a replacement.Had this been out-of-warranty, then yeah, cutting the bolt/lug off would've been my best (only?) option.  Still wondering about welding it in place?
A battery shop i deal with in town suggested that they could cut the damaged post off then tap a new hole beside it and insert a new (headless) bolt/post.
Lesson learned.... (as you said) use anti-seize on every bolt that cannot be slid out or otherwise easily removed!  It's just like insurance, sometimes seems unnecessary and rarely useful, but when sh*t happens, you'll be glad you used it! benn

DayStar Renewable Energy Inc. benn at daystarsolar.ca780-906-7807 HAVE A SUNNY DAY







Date: Tue, 7 Jun 2011 00:08:40 -0700
To: re-wrenches at lists.re-wrenches.org
From: william at millersolar.com
Subject: Re: [RE-wrenches] Battery Post Galling



Benn:


You must break the bolt or cut it.


I belive Unirac has a white paper on galling.


We use anti-seize on any bolt we can not slide out sideways easily. 
This includes any battery bolt and any non-toggle racking bolt other than
end bolts.


William




At 11:32 PM 6/6/2011, you wrote:

So this was a first for me
today...


I've had racking bolts gall before, but today while bolting a battery
interconnect cable on a battery post, the nut galled about 3/4 of the way
down the post.  (Threaded 'bolt' posts, not single or double hole
flag posts) 

I've gotten pretty good about using anti-seize on all stainless racking
bolts but never considered using it on battery post bolts
before.


I spun the nut on about half way by hand then got a couple cranks with
the wrench when the nut suddenly tightened up.  Thinking that the
thread might have been damaged, i instinctively began to back it off but
got less than an eighth of a turn out of it and it was completely
seized!


Two things...


1) while i go re-read all my info on galling, is it common practice
amongst you battery savvy wrenches to always use anti-seize on battery
posts?  I'm thinking that it is for me, now!  (only on the
threads, not between the lug and the post) 


2) now that i have a nut seized 3/4 of the way down the post, and the lug
is still quite loose, what would be the best course of action?


I did email the mfgr and am waiting for their reply, but in the meantime,
solutions i'm considering... using a hacksaw to cut the nut off and
hopefully be able to re-cut the threads, weld the lug onto the post (Bob
E., i believe you mentioned welding 'interconnects', would this be a
solution here?)... thats all i've got.


hmmmmmm...

benn


DayStar Renewable Energy Inc. 

benn at daystarsolar.ca

780-906-7807 

HAVE A SUNNY DAY 





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