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Old 04-14-2021, 05:39 PM   #21
DavidG
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Default Re: 1933/34 dual gauge temp sender unit (hose part).

Graham,


Yes; I'll take more photos tonight.
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Old 04-14-2021, 06:02 PM   #22
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Default Re: 1933/34 dual gauge temp sender unit (hose part).

So is this the fitting that is used? I have a few of the gauges but wondered what fitting is correct to use. I can machine one out of brass but the ones I can find right now are all steel..
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Old 04-14-2021, 06:09 PM   #23
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Default Re: 1933/34 dual gauge temp sender unit (hose part).

Those are heater hose fittings; an original fitting for the temperature probe is shown in the photo in #14 above. Note the thread area where the gauge is attached.
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Old 04-14-2021, 06:16 PM   #24
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Default Re: 1933/34 dual gauge temp sender unit (hose part).

Thank you DavidG and didn’t see the threads on the brass fitting. I will dig in the drawer to see. It can be made but in 2 pieces and either silver soldered or threaded . So are the originals one piece? It’s hard to tell in the picture .
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Old 04-14-2021, 07:34 PM   #25
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Default Re: 1933/34 dual gauge temp sender unit (hose part).

The large lower section that inserts into the radiator hose is a one-piece machined brass casting.
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Old 04-14-2021, 09:49 PM   #26
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Default Re: 1933/34 dual gauge temp sender unit (hose part).

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Here's a better photo.
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Old 04-14-2021, 11:33 PM   #27
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Default Re: 1933/34 dual gauge temp sender unit (hose part).


David, Here is a larger pictures of these connections. Perfect for detail. Thanks for sharing.
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Old 04-15-2021, 07:10 AM   #28
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Default Re: 1933/34 dual gauge temp sender unit (hose part).

Cool thank you for the info and picture
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Old 05-14-2021, 07:48 PM   #29
Graham Freeman
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Default Re: 1933/34 dual gauge temp sender unit (hose part).

David,
One more question, the location in the radiator hose of the sender unit when using thermostats is it directly above the left thermostat or up in the upper portion of the hose?
I have conflicting pictures of restored vehicles showing it both locations.
Just want to be sure before cutting into the hose.
Thanks
Graham
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Old 05-14-2021, 11:45 PM   #30
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Default Re: 1933/34 dual gauge temp sender unit (hose part).

Graham, The original instruction sheet that came with the gauge states the following ------Remove left radiator hose and with a sharp knife cut a 5/8"hole in hose 3 1/2" from motor end of hose. Wet knife blade for ease in cutting. Note if car is equipped with a thermostat be sure that this hole is between the thermostat and the motor. Also make sure you make a loop in the sender line between the sender unit and where it is clipped above on the left side radiator support rod. This is to compensate for any engine movement or vibration. Regards, Kevin.
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Old 05-14-2021, 11:55 PM   #31
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Default Re: 1933/34 dual gauge temp sender unit (hose part).

Graham, you need to know the temperature of the engine coolant below the thermostat especially if the thermostat is still closed. Regards, Kevin.
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Old Yesterday, 08:26 AM   #32
DavidG
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Default Re: 1933/34 dual gauge temp sender unit (hose part).

Graham,


As Kevin cites from the original instructions.
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Old Yesterday, 11:14 AM   #33
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Default Re: 1933/34 dual gauge temp sender unit (hose part).

Here are the original instructions.Couldn't figure out how to enlarge it.
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Old Today, 08:00 PM   #34
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Default Re: 1933/34 dual gauge temp sender unit (hose part).

What fasteners were used originally to hold the temp wire to the radiator rod? Don’t want to use a black zip tie...
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Old Today, 08:16 PM   #35
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Default Re: 1933/34 dual gauge temp sender unit (hose part).

Spring steel clips (2 off) blued finish. Third Generation Auto has these reproduced. Regards, Kevin.
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