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Antique Steel Wheel Tractors - Old Iron Lugs and Cleats

1928 McCormick-Deering 10-20 Governor


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  #1  
Old 04-10-2018, 10:14:20 AM
45SK 45SK is offline
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Default 1928 McCormick-Deering 10-20 Governor

The throttle is very unresponsive usually only responding to the first 1/3 of movement of the throttle lever. Everything seems to be moving freely within the linkages and in the governor. I would like to correctly set the governor and linkages to rule out mis-adjustment but I don't know the proper procedure. Can anyone describe or have a write-up of the procedure?
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Old 04-10-2018, 10:59:37 AM
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Default Re: 1928 McCormick-Deering 10-20 Governor

Do you have the original governor setup or the variable speed governor? The variable speed will have a push pull control and the original turns on the steering column. On these sometimes I will unbolt the carb leaving the governor linkage connected and pull the throttle open and closed to check first, this also makes a guy sure that the governor to carb linkage is installed correctly. Then I will pull the cap off at the front of the governor linkage on the original style to see if the pivot connections are okay. Sometimes you will get binding in the linkage. Also, if you have the original you will have a pot metal speed change at the rear of the governor housing, all it does is increase and decrease the spring tension on the pivot, pull the top of the governor off where the oil fill is and watch the linkage throw both ways on either kind. Sometimes the adjustment on the linkage in the governor housing doesn't allow the throttle to open up any further until you lengthen it.
The old style governor basically gives you control from idle to high idle, then the governor gives you more throttle under load. The variable speed governor will give you throttle control more like later model engines.
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Old 04-10-2018, 11:49:27 AM
GreasyIron GreasyIron is offline
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Default Re: 1928 McCormick-Deering 10-20 Governor

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The old style governor basically gives you control from idle to high idle, then the governor gives you more throttle under load. The variable speed governor will give you throttle control more like later model engines.
It's been a while since I had one apart, but (on the original system) doesn't the lever just over-ride the governor (governor still running, but throttle linkage held from following it), maybe as much as 1/2 to 3/4 lever travel, until the governor takes over?

If you have a good enough oil pump that you're not worried about starving lubrication, I love how you can adjust the throttle and spark down to an idle where you can just about see the blades on the fan while you count the pops.

Real fuzzy, but I also seem to recall the carbs having a little check ball on top that needs to rattle freely or the carb can do weird things. Hard to find an original float in good condition too. I finally went with brass float on a '29 new model 15-30(22-36) I rebuilt about 10 years ago. I'm near certain not related to your issue, but reminds me of the E4A mags being a little tricky: I like them, but I've seen at least two throw a hot spark in a vice, then saturate out erratically above idle. Sent both off for rebuild, and money well spent.
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Old 04-10-2018, 03:56:39 PM
45SK 45SK is offline
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Default Re: 1928 McCormick-Deering 10-20 Governor

This is what I have, sounds like I have the original setup. I have taken all the linkages apart on the carburetor side, they are free and appear to be assembled correctly. How should the arm (inside engine with 4 nuts) be adjusted. I've moved it so if it wasn't right before I'm sure it's not now. Thanks.



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Old 04-10-2018, 04:16:37 PM
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Default Re: 1928 McCormick-Deering 10-20 Governor

That's nice and original alright, you can give it a little more rpm on throttle open taking out the slack with those 4 nuts, but that's about it. The variable speed governor linkage is hooked to that rod with the pot metal thimble making it possible to pull against the governor spring.
If you lengthen that rod some more with those four nuts you can get more open throttle rpm, just make sure you can close the throttle. When we cheat on this like that, sometimes the governor spring will overcome the friction part of the throttle and when you force it to idle the spring will make the lever creep off idle, I have a regular that does that until I tightened up the spring on the rod and tube. The lever takes some to move, but, there it is.
Nice looking 10-20, one of my favorites.
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Old 04-10-2018, 05:43:07 PM
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Default Re: 1928 McCormick-Deering 10-20 Governor

Thank you very much guys! I just brought it home Saturday and got it fired up after a little tinkering. First time it has ran in over 20 years!





https://youtu.be/NuvP9e0GwLU
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Old 04-10-2018, 08:48:46 PM
CBarth66 CBarth66 is offline
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Default Re: 1928 McCormick-Deering 10-20 Governor

Very nice tractor. Is that the same engine as in a Farmall regular?
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Old 04-10-2018, 09:04:46 PM
GreasyIron GreasyIron is offline
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Default Re: 1928 McCormick-Deering 10-20 Governor

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Very nice tractor. Is that the same engine as in a Farmall regular?
A little confusing if you think of the Farmall as a 20HP tractor, but that was a little smaller bore. The F-30 would have been similar to the 10-20.
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Old 04-11-2018, 09:32:03 AM
CBarth66 CBarth66 is offline
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Default Re: 1928 McCormick-Deering 10-20 Governor

I guess I was just looking at the outside appearance of the block and not thinking of the internal. Grandpa had a regular and the block looked the same.
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Old 04-11-2018, 09:58:08 AM
GreasyIron GreasyIron is offline
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Default Re: 1928 McCormick-Deering 10-20 Governor

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I guess I was just looking at the outside appearance of the block and not thinking of the internal. Grandpa had a regular and the block looked the same.
I believe a bit scaled down, but your eyes don't deceive, very similar indeed. IH must have been happy with the design, as it was the basis for several models.

I tried giving an IH dealer a hard time back in the early 80's about warranting the main bearings [ball bearing; Guaranteed for life] on one I was rebuilding, but no go. Those full complement bearing are rather spendy these days, though I know of at least one tractor that's now using standard ones with supposedly equivalent load rating. For a little time puttering around, any maybe an hour a year under load, probably as good as, maybe better, than new.
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Old 04-11-2018, 11:37:12 AM
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Default Re: 1928 McCormick-Deering 10-20 Governor

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I believe a bit scaled down, but your eyes don't deceive, very similar indeed. IH must have been happy with the design, as it was the basis for several models.

I tried giving an IH dealer a hard time back in the early 80's about warranting the main bearings [ball bearing; Guaranteed for life] on one I was rebuilding, but no go. Those full complement bearing are rather spendy these days, though I know of at least one tractor that's now using standard ones with supposedly equivalent load rating. For a little time puttering around, any maybe an hour a year under load, probably as good as, maybe better, than new.
I heard of a dealer warrantying those bearings in the early 60's to one customer, probably just had a couple gathering dust.
I actually have found only one that was bad, front on a 10-20. You could pull on the fan belt and the crank pulley would go up and down a tad. Others were pitted from moisture, make a little roar noise.
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Old 04-11-2018, 04:03:38 PM
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Default Re: 1928 McCormick-Deering 10-20 Governor

Really one of my favorites, over the years if there was a 10-20 for sale close to home it ended up on our yard if it was affordable. Can't remember but just thinkin about it I remember 11 tractors, all on steel, still have five at home none running.
This tractor was one of them I just restored for selling years ago.
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Old 04-14-2018, 06:42:31 PM
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Default Re: 1928 McCormick-Deering 10-20 Governor

Thanks for your post as it is very inspirational. I'm almost ready to fire up my mountainside find '28 McD winter project.

Have a nice day
Steve
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Old 03-12-2019, 01:46:09 PM
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Default Re: 1928 McCormick-Deering 10-20 Governor

Looking at the top picture. Can someone verify that the throttle linkage is correctly connected? If so, mine is bass ackwards. Thanks.



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Old 03-12-2019, 02:10:04 PM
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Default Re: 1928 McCormick-Deering 10-20 Governor

I have seen them both ways, would have to look at the manual to tell you what is original as I cant remember. I remember on the farmall regular that the throttle lever turns clockwise to open the throttle so looking from the seat the lever on the end of the governor shaft should turn counter clockwise to open the throttle. So I think the setup pictured on the 10-20 is correct. They can be turned backwards and work, but the throttle lever would be all the way to the right to idle.
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Old 03-13-2019, 11:26:56 AM
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Default Re: 1928 McCormick-Deering 10-20 Governor

FYI, this is correct as pictured. Mine was backwards so advancing the the throttle closed the butterfly. HAH! How about that?
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Old 03-13-2019, 11:58:05 AM
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Default Re: 1928 McCormick-Deering 10-20 Governor

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FYI, this is correct as pictured. Mine was backwards so advancing the the throttle closed the butterfly. HAH! How about that?
Yeah, I have had that before and cranked way too long before I checked it out.
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