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Farmall & IHC Tractors Discussion Forum
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Super C - Engine Help (Governor?)

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J Clark

03-19-2007 20:39:47




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I have been working on my grandfathers Super C. About a month ago it suddenly stopped starting and I did a complete tune up/troubleshoot including: new wiring, new battery, disassembly and cleaning of carb, adjusting valves, checked pistons, installed new plugs, pulled and checked starter, installed new starter switch and 1 gauge cables, changed oil, new filter, checked compression, installed new rotor/cap/wires, adjusted timing and confirmed firing sequence… I am not much of a mechanic this is why it took me most of a month to accomplish the above. I think I covered the basics (air, spark, fuel, compression, etc) and all this maintenance resulted in a significant improvement in the tractors idle and starting (starts on 2nd crank every time now)

BUT I can not get the tractor to throttle up. The throttle lever has no effect and the engine stays at idle. From what I can determine the carburetor is connected to a device at the front of the engine block. Since the owners Manuel does not detail or label the device I have assumed through elimination that it must be the governor? When the tractor is running I can manually push this connecting rod from the carburetor and it will rev up the engine, but the throttle lever still does nothing. Throttle cables are good and the throttle lever does move the lever on the governor. I know nothing about governors except that it looks complicated and appears to require the removal of the radiator to work on it. I am aware of my mechanical limitations and this seems like a lot of work. Is this the correct course of action? Are there any adjustments on the governor? Are there any typical weak/breakable parts or springs inside that are meant to be worn out/replaced? I really want to keep this machine running as it is a 3rd generation machine. Any help to this amateur would be appreciated.

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JClark

03-20-2007 17:49:29




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 Re: Super C - Engine Help (Governor?) in reply to J Clark, 03-19-2007 20:39:47  
I want to thank all of you that posted such knowledgeable and insightful responses to my question. I really appreciate the help!



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ddg

03-20-2007 16:07:07




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 Re: Super C - Engine Help (Governor?) in reply to J Clark, 03-19-2007 20:39:47  
My Super A did this once, (and I've mentioned the fix for mine on this forum before, but it was so simple once I figured it out). While it's idling, disconnect the air cleaner at the carb, and see if that helps. My air intake tube to the air cleaner was totally clogged by mud dobbers, and could only get enough air to idle. When I opened up the throttle, it stayed at idle as if something was disconnected. I first noticed I was on the right path, when I tried to take off the air cleaner oil cup and there was so much suction, I had to shut it off to remove it.

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teddy52food

03-20-2007 06:25:05




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 Re: Super C - Engine Help (Governor?) in reply to J Clark, 03-19-2007 20:39:47  
I would not touch the adjustments until you replace the spring and maybe the thrust bearing if it is rough. These adjustments don't change.



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gene bender

03-20-2007 04:20:41




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 Re: Super C - Engine Help (Governor?) in reply to J Clark, 03-19-2007 20:39:47  
Before you remove the gov housing to replace the spring which appears to be broken get the I&T manual as it will show the correct adjustments. You probably will have to remove the throttle linkage going to the carb from the gov as the clevis is probably froze and you need the threads to move easy for the adjustment. Be careful removing the gov housing so as not to move the gear as it will get things out of time. Mite want to rebush the input lever on the housing too.

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Cedric

03-20-2007 02:59:53




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 Re: Super C - Engine Help (Governor?) in reply to J Clark, 03-19-2007 20:39:47  
I would say it is a broken governor spring. You do not have to remove the radiator to get the governor off although it does take a bit of juggling to get it clear of the fan and fan shroud. Having completed all the work that you have already done, you shouldn't have any difficulty fitting a new spring. You will also probably find the ball thrust bearing in a rusty condition and it would be worthwhile fitting a new one while the unit is disassembled. Sid.

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georgeky

03-19-2007 21:19:29




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 Re: Super C - Engine Help (Governor?) in reply to J Clark, 03-19-2007 20:39:47  
It does sound like a governor problem. You should get a IT manual they have step by step adjustment procedures in it.I will give it a shot I dont have my book handy but i'll try to get through it. First with tractor off place the throttle handle wide open and remove the pin at the front of that device you reffered to, then push the rod and the little arm pin came out of as far toward carburator as possible if adjustment is right the pin you removed should slide in easily, if not you will need to screw the clevas on the throttle rod until the hole for the pin lines up with the hole in the little arm it came out of.After doing this if it dont run right there is a high idle adjusment on top of governor unit on opposite side of tractor. It has a bolt sticking up and a lock nut there is a lever with a spring hooked to it under the bolt it is in the housing and not visable, screw that bolt in to decrease engine speed and out to increase engine speed. The throttle lever must be wide open for this also. Start tractor and see how it runs if it needs adjusting shut tractor off and make adjustments with throttle in wide open position. Trial and error.

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Bob

03-19-2007 20:55:08




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 Re: Super C - Engine Help (Governor?) in reply to J Clark, 03-19-2007 20:39:47  
It sounds as if the governor spring (inside the governor) has either broken or become disconnected.



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georgeky

03-19-2007 21:22:25




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 Re: Super C - Engine Help (Governor?) in reply to Bob, 03-19-2007 20:55:08  
Bob that is a good point it plum slipped my mind.



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A. Bohemian

03-20-2007 07:17:44




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 Re: Super C - Engine Help (Governor?) in reply to georgeky, 03-19-2007 21:22:25  
I would agree, most likely the spring broke or became disconnected.

If it came disconnected, I would think the weights or some part of their assembly is not operating smoothly when the throttle lever is returned to idle. So you might check the operation of these parts before buttoning things back up; otherwise, the problem may re-occur quickly.



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