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Fixing the old truck

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Step-by-step instructions for pictures in the forums
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Joined: Nov 2024
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'Bolter
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Does anyone know how to remove the “yoke” on this
Valve off-so I can install a new seal. Thanks for any information.
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image.jpg (328.23 KB, 144 downloads)

Last edited by 03spfld; 05/05/2025 1:59 PM. Reason: Left out word
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'Bolter
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Un-solder the opposite end of the valve there is a cap soldered in. Before you do see if you can see the end of the plunger. I found there to be two different ends on one it just looked like a stainless steel washer that is thin and flexes and on the other a rubber cone shaped plug. I will look to see if I have some pictures.


kevinski
1954 GMC 9300
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'Bolter
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Here are a few pictures one from Deve's tech site were there is info on the valve. I also used info from Denny Graham from this site
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IMG_6309.png (1.53 MB, 124 downloads)


kevinski
1954 GMC 9300
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'Bolter
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Here are the other pics. Also I used a kit for the rubbers for a Dodge as they are the same, but came with both the required rubbers. Detroit Muscle Technologies LLC Ranco valve seal kit
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IMG_6013.jpeg (223.13 KB, 119 downloads)

Last edited by Gdads51; 05/06/2025 1:00 AM. Reason: add link to noted parts kit

kevinski
1954 GMC 9300
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'Bolter
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On another look, if you are just trying to get at the seal in your picture, the U shaped bracket on the end shown has a slit in it that you carefully pry apart to slide over the rod to get at the flat round seal.


kevinski
1954 GMC 9300
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'Bolter
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Ok, thanks for that information. I’m just replacing the seal.

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'Bolter
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Test the inner seal when you have it apart. You can pull the plunger and plug one of the inlet holes and blow in the other to see if it leaks.


kevinski
1954 GMC 9300
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'Bolter
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Suck and see if your tongue sticks to it. If not, there's a leak.


1951 3800 1-ton
"Earning its keep from the get-go"
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1962 261 (w/cam, Fenton headers, 2 carbs, MSD ign.), SM420 & Brown-Lipe 6231A 3spd aux. trans, stock axles & brakes. Owned since 1971.

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