meters Gages

William Eccles - Jardine · Jan 9, 2015

I am investigating how to lengthen the connection tube on my temperature gage for my farmall BN to move it from the governor housing to a stand off on the steering column. I need to insert a connecting tube to do so. any suggestions as to how to go about this re modeling.
What company makes the gages for IHC?

Janicholson · Jan 9, 2015

It is not impossible, but realize it is a capillary tube with a bore of .020" or so. It is filled with a very specific amount of expansive fluid. My clear recommendation is to use a gauge from a tractor with a longer tube. The Logo might be wrong (but then so is the positioning) A 350 U or F300 400 are progressively longer tubes. Jim

Bob M · Jan 9, 2015

Jim N has it. Lengthening a temp gage capillary CAN be done. But is very difficult to accomplish. It's also prone to inaccuracy/early failure.

A better approach is a new gage with a longer lead.

The original letter series factory gages were made by Rochester Gauge. But Rochester is long gone. Sadly most reproduction gages now come from China or India and are generally of poor quality.

jean claude marleau · Jan 9, 2015

I do have a temperature gauge that has a 72'' leaD ON IT IF INTERESDTED . my e mail is [email protected]

gene bender · Jan 9, 2015

Unless you can hook the guage to the top of the head or on the neck going to he head you will not get a reading now if you have shutters and they work hooking to the lower outlet and with them closed you wont get any reading but just hooking into the return out of the block the temp will not get hiogh enough to read anything. The purpose of the guage was for the distillate engines that started on gas with shutters closed till temp got up enough for the distillate to burn then you would open the shutters but the guage would go back again to nothing. But hooking the sender to the top of the engine you can get a reading. Basicly the guage is just for pretty on the gas engine. You can get guages with a long tube to kmount wehere you like on the steering post.

Jim Becker · Jan 9, 2015

What has me baffled is why you would want to move it in the first place. Just about any place you move it to will be harder to see.

Owen Aaland · Jan 10, 2015

A gauge for a Super C should be long enough for what you want to do.

Hendrik · Jan 10, 2015

Jim, with respect, do you think the amount of fluid is crucial to the correct reading of the temp gauge? My impression is that the (temperature dependent)vapor pressure of the specific fluid is crucial, which means that such a temperature gauge is basically a sensitive pressure gauge.
Thanks, Hendrik

used red MN · Jan 10, 2015

Just for the sake of the fact that I thought it was very interesting, to give you an idea of what's involved with that quest, take a look at the link. And when you get done if all did not go well and you would need to calibrate the temp readings that would require opening the gauge case some way to bend mechanisms that move the needle.
33 Ply. temp gauge repair

Jim Becker · Jan 10, 2015

Hendrik,
I think you are right, it is driven by vapor pressure. The volume may not be that critical, within reason. It may be sensitive to contamination. Rochester Gauge's web page says:

The indicator functions by responding to changes in the vapor pressure of methylene chloride contained within the remote-temperature-sensing bulb.

I notice that the procedure red MN pointed out lists ether as a working fluid. I have no idea what Rochester used in the 1940s. Looking at the MSDS of methylene chloride, I don't think I'll mess with it.

CNKS · Jan 10, 2015

On my Super A the temp gauge is attached to the governor, the connection is attached to a shortened outlet from a Super C to the head. It is very visible. I would not put it anywhere else. However, since there is no water pump the readings are all over the place, with load mostly in the lower side of red. It drops rapidly with no load -- in other words it is not always accurate. As said it will be of no value attached to the lower radiator.

Janicholson · Jan 10, 2015

It somewhat depends on the volume, especially if a person modifies one with a much longer tube as it might have air in it, and contaminate the fluid/gas. If the system is open for a while, or heated to resolder the tube, fluid can be driven out. If I owned a gauge that was very unique, I would attempt a repair. In this case it is just not worth the hassle. Jim

William Eccles - Jardine · Jan 10, 2015

I am looking ahead to putting a heat houser covering on next winter for winter work and KNOW that the present position of the heat gage is not conducive to being seen while under the canvass.
. thus moving the gage to the steering column.
Thank you for your replies.

meters Gages

William Eccles - Jardine

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Janicholson

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Bob M

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jean claude marleau

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gene bender

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Jim Becker

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Owen Aaland

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Hendrik

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used red MN

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Jim Becker

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CNKS

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Janicholson

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William Eccles - Jardine

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