--===============0965705993518261968==
--0000000000009f8b60059d2b709e
Randall wrote: "I never did get mine very accurate across the scale; but it
pointed to 'E'
before I ran out of gas, and 'F' after I filled the tank, so I thought it
close enough."
I think that is about how they came from the factory, seems like the gauges
would usually spend about 3/4 of a tank reading over half a tank, then
seemingly run down the last half of the gauge very quickly.
Greg Lemon
TR250
On Mon, Jan 27, 2020, 6:37 PM Randall <TR3driver@ca.rr.com> wrote:
> Check that the resistor value has not drifted too much. I don't recall the
> correct value for the TR gauge offhand, but it's not the same as the MGA
> that Barney "MGAguru" was working on. It's worth checking the magnetic
> coils as well, not only for resistance but for a short to ground inside the
> coil.
>
> Also make sure both the gauge and the sending unit are securely grounded.
>
> When doing mine, I found that the tabs on the coils were not adequate to
> keep them from turning. They have to be turned so the gap between the pole
> pieces and the moving armature is reasonably constant across the width of
> the pole piece; which you can only see with the face removed. Mine wanted
> to turn so one corner was almost touching the armature.
>
> I never did get mine very accurate across the scale; but it pointed to 'E'
> before I ran out of gas, and 'F' after I filled the tank, so I thought it
> close enough.
>
> -- Randall
> 56 TR3 TS13571L once and future daily driver
> 71 Stag LE1473 - awaiting engine rebuild
> 71-2-3 Stag - awaiting gearbox rebuild
>
> > Listers,
> > I'm completing a restoration on a 1955 TR2. The fuel gauge
> > isn't working. Wiring is good, gauge was dead. Finally
> > opened the gauge and found a broken wire. Repaired the wire.
> > Using mga guru instructions, I tried, for a long time, to
> > calibrate the gauge. I can set the Full position, but can't
> > get close to calibrating the 1/2 mark. When I get it close,
> > just the slightest pressure on the nut drives it to one end
> > or the other. Took what I had for calibration and tried it
> > on the cars's 3/4 full tank. It read about 1/4. I'm
> > thinking that because the calibration for 1/2 tank is so
> > touchy, there is a bigger problem. Any thoughts will be appreciated.
> > John DeLuca
> >
>
> ** triumphs@autox.team.net **
>
> Donate: http://www.team.net/donate.html
> Archive: http://www.team.net/pipermail/triumphs
> http://www.team.net/archive
>
> Unsubscribe/Manage:
> http://autox.team.net/mailman/options/triumphs/grglmn@gmail.com
>
--0000000000009f8b60059d2b709e
Content-Transfer-Encoding: quoted-printable
<div dir=3D"auto">Randall wrote: "<span style=3D"font-family:sans-seri=
f;font-size:12.8px">I never did get mine very accurate across the scale; bu=
t it pointed to 'E'</span><br style=3D"font-family:sans-serif;font-=
size:12.8px"><span style=3D"font-family:sans-serif;font-size:12.8px">before=
I ran out of gas, and 'F' after I filled the tank, so I thought it=
</span><br style=3D"font-family:sans-serif;font-size:12.8px"><span style=3D=
"font-family:sans-serif;font-size:12.8px">close enough."</span><div di=
r=3D"auto"><span style=3D"font-family:sans-serif;font-size:12.8px"><br></sp=
an></div><div dir=3D"auto"><font face=3D"sans-serif"><span style=3D"font-si=
ze:12.8px">I think that is about how they came from the factory, seems like=
the gauges would usually spend about 3/4 of a tank reading over half a tan=
k, then seemingly run down the last half of the gauge very quickly.</span><=
/font></div><div dir=3D"auto"><font face=3D"sans-serif"><span style=3D"font=
-size:12.8px"><br></span></font></div><div dir=3D"auto"><font face=3D"sans-=
serif"><span style=3D"font-size:12.8px">Greg Lemon</span></font></div><div =
dir=3D"auto"><font face=3D"sans-serif"><span style=3D"font-size:12.8px">TR2=
50</span></font></div></div><br><div class=3D"gmail_quote"><div dir=3D"ltr"=
class=3D"gmail_attr">On Mon, Jan 27, 2020, 6:37 PM Randall <<a href=3D"=
mailto:TR3driver@ca.rr.com";>TR3driver@ca.rr.com</a>> wrote:<br></div><bl=
ockquote class=3D"gmail_quote" style=3D"margin:0 0 0 .8ex;border-left:1px #=
ccc solid;padding-left:1ex">Check that the resistor value has not drifted t=
oo much.=C2=A0 I don't recall the<br>
correct value for the TR gauge offhand, but it's not the same as the MG=
A<br>
that Barney "MGAguru" was working on.=C2=A0 It's worth checki=
ng the magnetic<br>
coils as well, not only for resistance but for a short to ground inside the=
<br>
coil.<br>
<br>
Also make sure both the gauge and the sending unit are securely grounded.<b=
r>
<br>
When doing mine, I found that the tabs on the coils were not adequate to<br=
>
keep them from turning.=C2=A0 They have to be turned so the gap between the=
pole<br>
pieces and the moving armature is reasonably constant across the width of<b=
r>
the pole piece; which you can only see with the face removed.=C2=A0 Mine wa=
nted<br>
to turn so one corner was almost touching the armature.<br>
<br>
I never did get mine very accurate across the scale; but it pointed to '=
;E'<br>
before I ran out of gas, and 'F' after I filled the tank, so I thou=
ght it<br>
close enough.<br>
<br>
-- Randall <br>
56 TR3 TS13571L once and future daily driver<br>
71 Stag LE1473 - awaiting engine rebuild<br>
71-2-3 Stag - awaiting gearbox rebuild <br>
<br>
> Listers,<br>
> I'm completing a restoration on a 1955 TR2.=C2=A0 The fuel gauge <=
br>
> isn't working.=C2=A0 Wiring is good, gauge was dead.=C2=A0 Finally=
<br>
> opened the gauge and found a broken wire.=C2=A0 Repaired the wire. <br=
>
>=C2=A0 Using mga guru instructions, I tried, for a long time, to <br>
> calibrate the gauge.=C2=A0 I can set the Full position, but can't =
<br>
> get close to calibrating the 1/2 mark.=C2=A0 When I get it close, <br>
> just the slightest pressure on the nut drives it to one end <br>
> or the other.=C2=A0 Took what I had for calibration and tried it <br>
> on the cars's 3/4 full tank.=C2=A0 It read about 1/4.=C2=A0 I'=
m <br>
> thinking that because the calibration for 1/2 tank is so <br>
> touchy, there is a bigger problem.=C2=A0 Any thoughts will be apprecia=
ted.<br>
> John DeLuca<br>
> <br>
<br>
** <a href=3D"mailto:triumphs@autox.team.net"; target=3D"_blank" rel=3D"nore=
ferrer">triumphs@autox.team.net</a> **<br>
<br>
errer" target=3D"_blank">http://www.team.net/donate.html</a><br>
Archive: <a href=3D"http://www.team.net/pipermail/triumphs"; rel=3D"noreferr=
er noreferrer" target=3D"_blank">http://www.team.net/pipermail/triumphs</a>=
=C2=A0 <a href=3D"http://www.team.net/archive"; rel=3D"noreferrer noreferrer=
" target=3D"_blank">http://www.team.net/archive</a><br>
<br>
hs/grglmn@gmail.com" rel=3D"noreferrer noreferrer" target=3D"_blank">http:/=
/autox.team.net/mailman/options/triumphs/grglmn@gmail.com</a><br>
</blockquote></div>
--0000000000009f8b60059d2b709e--
--===============0965705993518261968==
Content-Transfer-Encoding: 7bit
Content-Disposition: inline
** triumphs@autox.team.net **
Archive: http://www.team.net/pipermail/triumphs http://www.team.net/archive
--===============0965705993518261968==--
|