Two questions

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Sailor
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Two questions

Postby Sailor » Sun Dec 27, 2015 1:40 am

1. Even thought I'll never get this one loose I'd still like to know what it's function is.
100_0922.JPG

2. This one I was able to remove, again what is it's function?
100_0921.JPG


Thanks,
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Re: Two questions

Postby tnestell » Sun Dec 27, 2015 2:44 am

Seems to me that plug in picture #2 was a vacuum source for a milker.

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Re: Two questions

Postby Ole90633 » Sun Dec 27, 2015 7:04 am

The plug in the first picture was installed by a previous owner; the soot and exhaust gases often made the side of the cylinder block dirty opposite that "weep hole".

When I got my 1949 Cub, I found a 16d nail driven in the hole... guess that was a "field modification" :roll:

When the manifold is in the "installed" position, the "weep hole" allowed water (rain, condensation) to drain/be ejected out of the manifold instead of flowing into an unlucky cylinder.

The other picture was indeed a vacuum take-off.

There yah go Larry!

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Sailor
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Re: Two questions

Postby Sailor » Sun Dec 27, 2015 2:02 pm

Weep hole, I can see that.

Vacuum source...I never would have thought of that.

What a all-purpose tractor, work the fields, saw wood, milk cows..... :shock:

Thanks, Guys.
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Re: Two questions

Postby havoc1482 » Sun Dec 27, 2015 3:09 pm

Sailor wrote:Weep hole, I can see that.

Vacuum source...I never would have thought of that.

What a all-purpose tractor, work the fields, saw wood, milk cows..... :shock:

Thanks, Guys.


Other models have the vacuum cap aswell. My Super A has it and so does the C and Super C
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Re: Two questions

Postby Scrivet » Sun Dec 27, 2015 4:22 pm

Also a very good place to temporarily install a vacuum gauge for troubleshooting if you have the plug removable. :)
Can also be a source for a vacuum leak if you don't get the plug sealed good after you get it removable. :(

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Re: Two questions

Postby havoc1482 » Sun Dec 27, 2015 4:26 pm

Does the Cubs use an allen nut or that that a aftermarket plug? The ones I've seen on the C123-113s are all square headed.
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Re: Two questions

Postby Scrivet » Sun Dec 27, 2015 6:58 pm

Pretty sure all four of my Cubs have a pipe thread plug (square head just like the transmission fill, level, and drain plugs have) which I think is 1/8" NPT.

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Re: Two questions

Postby Super A » Sun Dec 27, 2015 10:48 pm

Scrivet wrote:Also a very good place to temporarily install a vacuum gauge for troubleshooting if you have the plug removable.

I have never seen anything in literature about attaching any sort of implement like a milker, (not saying it's not there,) I'm inclined to think it was mainly meant for diagnostics.

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Re: Two questions

Postby Bill Hudson » Sun Dec 27, 2015 11:35 pm

We never did it, but I seem to remember seeing a tractor or two that had a petcock installed on the manifold to run milkers when the electrical service was lost. Not as fast as an electric vacuum pump, but it sure beat milking by hand. :) :)

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Re: Two questions

Postby havoc1482 » Tue Dec 29, 2015 12:12 pm

I use it for spraying starter fluid when shes gets stubborn in the winter, its just so perfect for that use lol. Or with the under-serviced Farmalls on the farm that can be real stubborn sometimes. Much easier than removing the air-cleaner hose to spray the fluid in.
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Re: Two questions

Postby Sailor » Tue Dec 29, 2015 6:23 pm

Scrivet wrote:Pretty sure all four of my Cubs have a pipe thread plug (square head just like the transmission fill, level, and drain plugs have) which I think is 1/8" NPT.

The hole is an 1/8" because I chased the threads. Since the Cub has so many of these type fittings, I figured it was original.

I spent a lot of time/effort on getting this Allen head screw out so if it has a purpose I would like to explore it. What type of diagnostic test would be performed using this vacuum source?

I used ample Anti-seize when I put it back in, I don't think I'll have any trouble with a vacuum leak, will I?
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Re: Two questions

Postby Eugene » Tue Dec 29, 2015 6:30 pm

http://www.secondchancegarage.com/public/186.cfm
Vacuum gauge, explanation of readings.
I have an excuse. CRS.

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Re: Two questions

Postby KETCHAM » Wed Dec 30, 2015 3:19 pm

Picture #2... I have a valve that is screwed into the hole....Pulls a little vacuum...not much though....Not milking anything out here....except at work....Kevin :lol: :lol: :lol: :lol:
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Re: Two questions

Postby Sailor » Sun Jan 03, 2016 1:05 am

Eugene wrote:http://www.secondchancegarage.com/public/186.cfm
Vacuum gauge, explanation of readings.

What a great site...thanks.
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