[Public-list] Fw: Removal of brass temperature sensor

[cathie & john coultis]

----- Original Message ----- 
From: "cathie & john coultis" <zoocrew2 at sympatico.ca>
To: "Alberg 30 Public List -- open to all" <public-list at alberg30.org>
Sent: Sunday, July 16, 2006 2:47 PM
Subject: Re: [Public-list] Removal of brass temperature sensor


> Hi George,
>
> With regard to the email below,  I remember my dad using penetrating oil,
a
> small-hammer-chisel method with success after a coulple of "applciations".
> I still keep the spray container filled with penetrating oil and the
hammer
> and chisel onboard.  They have come in handy for other projects.  However,
> we have one challenging project right now that those items can't help us
> with.  Our Alberg 30 was built in 1971, #448 has the original holding
tank,
> which is actually apart of the liner with an aluminum cover plate located
> underneath the main cabin floor.  It is in immediate need of repair (or
> replacement).    We'd greatly appreciate hearing about any
> experiences/remedies with this type of holding tank?
>
> John & Cathie
> Scotch Mist II
> ----- Original Message ----- 
> From: "George Dinwiddie" <gdinwiddie at alberg30.org>
> To: "Alberg 30 Public List -- open to all" <public-list at alberg30.org>
> Sent: Sunday, July 16, 2006 12:17 AM
> Subject: Re: [Public-list] Removal of brass temperature sensor
>
>
> > David Parkes wrote:
> > > Our Atomic 4 is now running beautifully with full compression and
great
> oil
> > > pressure.  However, the temperature sensor is broken and must be
> replaced.
> > > Has anyone any ideas on how to remove a terribly seized brass
> temperature
> > > sensor bushing on the front of the block?  I have tried so much, with
so
> > > many tools, that the hexagonal is now rounded and the bushing has not
> moved.
> >
> > David, I asked your question on the Atomic 4 list.  Here are some
> > responses I got:
> >
> > ---
> >
> > If there's room, a pipe wrench or large channel locks would work.  Also
> > try heating the block around the unit with a heat gun to expand the
> > block and likely free up the unit.
> >
> > ---
> >
> > Heat, pressure, shock,  lube with some penetrating oil, then repeat the
> > process two or three times.
> >
> > When heating, use the best torch you have. A brazing torch with map gas
> > will do it. Heat the fouled item directly, not the block. The item will
> > quickly dissipate it's heat to the block,
> >
> > Spray with penetrating oil, tap with a hammer and cold chisel, and then
> > try the wrench or vice grip. Always spraying more penetrating oil and
> > tapping.
> >
> > Do not try to free the item with one go at it. Aim for two or three or
> > more heat, lube, shock, and then pressure with your wrench. You will not
> > fail.
> >
> > The combination of the thermal expansion, the penetrating oil, the
> > rapping, and the pressure from a good vice grip, repeated over and over,
> > will move anything.
> >
> > So nice to hear that sound when you finally get her............CHEEEEEK.
> >
> > ---
> >
> > If it's as badly damaged as you say, you're going to have to drill it
> > out.  Drill smaller than the thread size, and then cut the remaining
> > 'bushing' with a hacksaw.
> >
> >    Best way to deal with those that still have some shape is with a six
> > point socket.  Adjustable wrenches are just asking for trouble, and 12
> > point sockets are only effective on units that aren't too badly bunged
> > up.  The problem is that the brass is so soft that it just flows out of
> > the way of the wrench.
> >
> >    DO NOT use heat!  Brass is a copper alloy and will expand MORE than
> > the cast iron head, and hence get tighter.
> >
> > ---
> >
> > Temp senders that are stubborn can be removed with a sharp pipe wrench,
> > provided you have enough room to swing it.
> >
> > ---
> >
> > There was a second to the notion that you NOT use heat.
> >
> >   - George
> >
> > -- 
> >   ----------------------------------------------------------------------
> >    When I remember bygone days                         George Dinwiddie
> >    I think how evening follows morn;            gdinwiddie at alberg30.org
> >    So many I loved were not yet dead,           http://www.Alberg30.org
> >    So many I love were not yet born.
> >                 'The Middle' by Ogden Nash
> >   ----------------------------------------------------------------------
> >
> >
> >
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