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Re: Original gauges.. can I use a 12 volt bulb?
38_1.5Ton #1417705 Thu Jul 22 2021 04:14 AM
Joined: Nov 2020
Posts: 247
3
'Bolter
Well, heres what the water gauge looks like.. and no it does not read temps! (as you can see) FAncy looking mechanism here.. wink wonder what is busted and what can be fixed.. I see no 'bulb' in it (myself). headscratch Any ideas? Oh and I am out of gas!

Attached Files
IMG_5227.jpg (116.19 KB, 63 downloads)
IMG_5228.jpg (169.04 KB, 63 downloads)
IMG_5229.jpg (107.59 KB, 63 downloads)
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Last edited by 38_1.5Ton; Thu Jul 22 2021 04:15 AM.

'38 1.5ton; "The stuff is as tough as woodpecker lips"
Re: Original gauges.. can I use a 12 volt bulb?
38_1.5Ton #1417773 Thu Jul 22 2021 07:53 PM
Joined: Mar 2010
Posts: 610
B
Curmudgeon
Back-up! I'm confused.

The picture on the left is an example water temperature gauge with all the parts that make it operate.
Notice a bulb-shaped sensor attached to the end of the tube.
This sensor goes inside the engine block or head and makes contact with the engine coolant.
This is a mechanical gauge. No electricity required.

The picture on the right is a typical 6 volt bulb that shines light into the gauge cluster.

Which bulb are you talking about? I need to get this straight (understood) before we can continue.

Attached Files
Which One.jpg (49.28 KB, 46 downloads)
Re: Original gauges.. can I use a 12 volt bulb?
38_1.5Ton #1417774 Thu Jul 22 2021 07:58 PM
Joined: Nov 2020
Posts: 247
3
'Bolter
Ohhhh well now this is making sense to me. I dont have that left pic bulb or it is on the engine somewhere! So I need to find that, if it is on the original engine and reattach ? (or get a new one) I *thought* a tiny 'bulb' similar to the one on the right was inside the mechanism (my mos right pic) Now that you have explained that, I understand. So - no it is not a light buld or even like a lightbulb I need.. it is a mechanical 'bulb'. Yes.

Last edited by 38_1.5Ton; Thu Jul 22 2021 07:59 PM.

'38 1.5ton; "The stuff is as tough as woodpecker lips"
Re: Original gauges.. can I use a 12 volt bulb?
38_1.5Ton #1417785 Thu Jul 22 2021 09:32 PM
Joined: Mar 2010
Posts: 610
B
Curmudgeon
I could not find a New Old Stock gauge. Unfortunately I could not find a reproduction gauge like the ones for 1947-55 Chevy trucks.

Used gauge.
https://www.ebay.com/itm/114673227986

This is a rebuilt GMC gauge from Jim Carter who is well know at Stovebolt. Your broken gauge may require an additional $60 core charge. Call them for details.
https://oldchevytrucks.com/resp275.html

Last edited by buoymaker; Thu Jul 22 2021 09:38 PM.
Re: Original gauges.. can I use a 12 volt bulb?
38_1.5Ton #1417786 Thu Jul 22 2021 09:36 PM
Joined: Nov 2020
Posts: 247
3
'Bolter
Okay. Thanks very much buoymaker!


'38 1.5ton; "The stuff is as tough as woodpecker lips"
Re: Original gauges.. can I use a 12 volt bulb?
38_1.5Ton #1417792 Thu Jul 22 2021 10:10 PM
Joined: Mar 2010
Posts: 610
B
Curmudgeon
You also have other options:

* Cut a big hole in your dash for a modern $200+ instrumentation panel and buy individual modern gauges to fit the holes. This is the least favorable solution with the Stovebolt members.
* Buy a new reproduction 1949-53 Chevy truck gauge with white needle and try to swap the gauge faces. Can be difficult.
* Buy a new low cost mechanical water temperature gauge and use the parts to fix your broken gauge. This can be very difficult to do.

Personally I would worry more about fixing/restoring the more important parts of your truck first then deal with the gauges later.
You can go to a local parts store and buy lower cost gauges and use them as a temporary solution.
I reused my temporary gauges on a homemade engine stand.

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