HELP! Anybody who knows how gauges work!

[Donald Lamond]

Have you apologized to the cat?

Donald

84  4Ks

Konstantin Bogach wrote:

> I was inside the temp gauge.  Definitly somebody played with needle. And I
> know who it was - my 2 years old daughter.  I took her seconds before she lost
> interest. Nobody saw it.
> It is fixed now.. By the way I can explain what I saw just as
> bimetallicU-shaped strip with wound wire around one leg which servse as a
> heater, I think. But I never heard about such kind of gauge construction.
> Heater inside the gauge? Hmm.  From other hand I can not find any other
> physics inside the gauge.  If I am wrong  then I overestimated my knowledge of
> physics.  I would appreciate if someone prove it in this case.
>
> Speedo needle was overturn and not being able to take the needle off I just
> forced it in oposite direction and it rotated on the shaft. Now it starts on 0
> and goes all the way up.
>
> Sorry for panic posts.
>
> Konstantin Bogach.
>
> Konstantin Bogach wrote:
>
> > I used very little of contact enhancer taking off excess of it. I used it
> > only on pin connections. I did not put IC back into car because I found
> > those strange things before I completed assemblying IC.  I think that
> > something happend to mechanical part in coolant temp gauge(needle does not
> > move if I push it) and speedo's needle looks like is overturn.  There is
> > very little chance that my kids touched it when I left my desk unattended
> > for couple of minutes. I thought it is little. But now I am more and more
> > unsure.
> > How is needle fixed to the pin?  Should it come off when I pull it?
> >
> > Thank you.
> >
> > Konstantin Bogach.
> >
> > Kevin Phillips wrote:
> >
> > > >I disassembled instrument cluster(IC), cleaned all contacts, used
> > > >deoxIT and ProGold
> > >
> > > Be carefull with the contact enhancer in the IC. There are some very
> > > small signals in it that could be persuaded to take the wrong route
> > > with too liberal an application. I would clean most of it off, make
> > > sure there is none between pins, sockets and tracks. The only bad
> > > connections I had in mine were the 4 pins to the speedo itself.
> > >
> > > When looking over a circuit board for bad connections, you need to
> > > consentrate on large/heavy/hot components and all conections as they
> > > are subject to strain and vibration.
> > > Also, now you have handled the IC so much I would double check all the
> > > lamps. You might take an over-dose of deoxit if you find them not
> > > running after all this !!!!!!, that is if the cat did not beat you to
> > > it.
> > > Kev the Brit
> > >
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