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Old 06-16-2019, 04:56 PM   #1
Steve Plucker
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Default Radiator Drain Cock rebuild kits...

Where can I get a rebuild kit, if they even make one, for the A-8115 Radiator Drain Cock?

All it would consist of is 1 Brass cotter key, 1 Steel spring, and 2 steel washers.

Thanks.

May have to make up one myself.

Pluck
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Last edited by Steve Plucker; 06-16-2019 at 07:23 PM.
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Old 06-16-2019, 05:46 PM   #2
SoCal_Alden
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Default Re: Radiator Drain Cock rebuild kits...

Steve, You may want to contact the folks at Restoration Supply Company in Escondido, CA (www.restorationstuff.com) (Phone: 1-800-306-7008 ).

Cheers,
Alden
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Old 06-16-2019, 08:58 PM   #3
Steve Plucker
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Default Re: Radiator Drain Cock rebuild kits...

Quote:
Originally Posted by SoCal_Alden View Post
Steve, You may want to contact the folks at Restoration Supply Company in Escondido, CA (www.restorationstuff.com) (Phone: 1-800-306-7008 ).

Cheers,
Alden
Thanks Alden but I have their catalog and they do not sell brass cotterkeys that I can see.

Pluck
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Old 06-16-2019, 11:32 PM   #4
160B
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Default Re: Radiator Drain Cock rebuild kits...

Steve here is a online source for Brass cotter pins, not sure what size you need but they have a pretty good selection with the following Diameter 1/16", 5/64", 3/32", 7/64", 1/8", 5/32", 3/16", 1/4"


https://www.boltdepot.com/Cotter_pins_Brass.aspx?nv=l
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Old 06-17-2019, 07:05 AM   #5
Kurt in NJ
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Default Re: Radiator Drain Cock rebuild kits...

McMaster has down to 1/16, graineger has one at 3/64 diameter
Also don't forget to get some gas cock grease so it moves smoothly and easy ---- when I rebuilt the fuel shutoff the kit came with some and both valves still move smoothly after 45 years
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Old 06-17-2019, 08:32 PM   #6
Stew Masche
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Default Re: Radiator Drain Cock rebuild kits...

Is there a process of 'lapping' the valve ? I have a nice old one I rebuilt, but it weeps a bit. Anybody have suggestions for that?

Thanks,
Stew
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Old 06-18-2019, 10:09 AM   #7
katy
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Default Re: Radiator Drain Cock rebuild kits...

I've heard of those valves being lapped using toothpaste for an abrasive.
If you do a google search for toothpaste abrasiveness you'll see that toothpastes vary a lot.
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Old 06-18-2019, 11:31 AM   #8
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Default Re: Radiator Drain Cock rebuild kits...

Any Model; T's in your junk pile? check the oil pans. Might be some donors.
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Old 06-19-2019, 03:20 AM   #9
chrs1961815
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Default Re: Radiator Drain Cock rebuild kits...

I don't think anybody makes them, but they should. There are a good amount of petcocks and fuel valves that could be saved. I have seen people with buckets of both who just throw them away and buy repros.
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Old 06-19-2019, 07:17 AM   #10
CT Jack
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Default Re: Radiator Drain Cock rebuild kits...

Use 1000grit or greater lapping compound. Go on line and search for fine lapping compound. These types of compounds are used for lapping metals and are capable of producing micron type finishes. Toothpaste contains organic abrasives such as corn powder which breakdown very rapidly. Toothpaste will polish but not remove the amount of material needed to get a mating surface to surface contact.
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