From: Ida Heath (spike@defuniak.com)
Date: Sat Jun 19 2004 - 06:00:51 PDT
Noel,
If I understand what you're talking about, why would you heat the bolt
instead of the area around it? Dosen't heat expand metal?
Sonny
----- Original Message -----
From: noel shelley <noel@shelley1722.freeserve.co.uk>
To: Military Vehicles Mailing List <mil-veh@mil-veh.org>
Sent: Saturday, June 19, 2004 4:29 AM
Subject: Re: [MV] [eu_mil_veh] Re: Brake drum problem
> Hi Cor ,
> First try using a small 1/2 lb ball pein hammer and sharply
hit
> the head of the screw a few times after a good squirt of wd40 or similar.
> this may loosen the screw . then try a screw driver . If that doesn` t
work
> then use a small chisel 1/4" or 3/8" wide ,no bigger and try to drive the
> screw round by the head using the small hammer , this usually works .
> Before drilling try some heat , gas welding nozzle is best , you only want
> to heat the bolt if you can ! Redose with wd40 then repeat the above . The
> thermal shock will often break the rust .
> If you must resort to a drill use one slightly bigger than the screw , the
> hardest part is getting the drill started in the middle . once the drill
has
> cut to the stem of the screw the head will spin free and stop you drilling
> down the thread , the drum can be removed and then the vise grips or a
drill
> will remove the rest . If drilling out check the core size of the bolt and
> drill that size , then pick out the spiral of thread, BUT concentricity is
> vital .
>
> IF you have arc welding gear or MIG then simply weld a small piece of bar
or
> an old bolt on to the head , the heat will do no harm and also break the
> rust on the thread , then simple unscrew .
>
> Good luck Noel
>
>
>
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