On Wednesday 30 April 2003 00:14, David Ross wrote:
> > Um.... I'm going to have to disagree about the screws. There are
> > several places in a ThinkPad where the use once screws are used,
> > and for a reason. They deform and "squish", making a tight connection
> > so they won't easily come apart.
>
> I accidentally read this, despite my non-ownership of an A20M, and thought
> I'd expand the discussion a bit. The 560 series maintenance manuals also
> say to use the screws just once. I can't see any evidence that these
> screws have suffered any when I remove them, but I *have* lost a few after
> reinstalling them, so now you have me wondering: (a) which machines use
> "use-once" screws, and does this include the 560 line? (b) is there any
> harm in reusing them other than the fact that they might fall out again?
> (c) where does one get replacements? (Used to be Boulder, I think, but my
> bookmark for that website doesn't work any more...)
You can't see the deformations with the naked eye, but I'll bet you
could detect it with a micrometer.
As for which ones are use once, you'd have to look in the specific
manual. No, no "harm" in using them -- they will still hold things
together, but not as well under long term vibration as they originally
did. If I had to go inside a ThinkPad without them I'd do it, but I'd
remember that I did that and try to get replacements for them,
especially if the unit travelled a lot.
--STeve Andre'
_______________________________________________
Thinkpad mailing list
Thinkpad@stderr.org
http://stderr.org/cgi-bin/mailman/listinfo/thinkpad
Received on Wed Apr 30 12:11:57 2003
This archive was generated by hypermail 2.1.8 : Fri May 26 2006 - 16:00:42 EDT