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Harry Ferguson Tractors Discussion Forum
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Ok, governor 101 for the new guy.....

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DoubleK

05-10-2007 10:34:26




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I was reading the post below about re-hooking up the spring to the governor so I thought I would take this time to ask Who, What and Why of the governor. Remember, just bought my FIRST Ferguson, TO-20 and want to know all the in"s & out"s! So, why exactly do I have a governor and when, why, how do I need it to me set and adjusted? One thing about my tractor also is when I give it full throttle it won"t stay because the throttle control spring (guessing by watching) seems to pull it back down. so in order to keep the RPM"s up I have to keep a hand on the throttle. Is there some sort of friction stop that I need to tighten to prevent this?
GP

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John(UK)

05-13-2007 05:29:11




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 Re: Ok, governor 101 for the new guy..... in reply to DoubleK, 05-10-2007 10:34:26  
If you need the info on how to set-up the engine governor, email me at:-
[email protected]
just tell me what you need again and if there is anything else besides the governor that you wish to know about...John



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RegoR

05-10-2007 12:19:03




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 Re: Ok, governor 101 for the new guy..... in reply to DoubleK, 05-10-2007 10:34:26  
Hi DoubleK,

The only thing I have to add to Jerry's response has to do with the manuals; they are indeed invaluable- any and all of them. I have both "factory" and the I&T (not ITT) manuals and while I was initially disappointed with the skinny I&T, I have since found info in it that is not in the factory Service Manual. IMO, both are worthwile owning, in addition to a Parts Manual. Even an Operator's Manual has tons of info, especially useful to a first-time tractor owner.
The factory Service Manual is definitely the first choice, though.
BTW, manuals are availble on this site. See the menu to the left of your screen.
Have fun!

Roger

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DoubleK

05-10-2007 12:33:48




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 Re: Ok, governor 101 for the new guy..... in reply to RegoR, 05-10-2007 12:19:03  
Thanks Roger! Yes, I am on a hunt for manuals and I'm sure they will help with most of my questions, but in the meantime I appreciate you guys sharing the knowledge! GP



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Jerry/MT

05-10-2007 11:14:26




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 Re: Ok, governor 101 for the new guy..... in reply to DoubleK, 05-10-2007 10:34:26  
The governor's function is to try to hold the engine speed constant. Many field operations are best accomplished at a fixed ground speed. If you had a foot pedal and were bouncing across a field, how accurately would you be able to hold the speed? By setting a throttle position, you put tension on a spring and that causes the throttle plate to open. Some centrifugal weights spin up in response to rpm change and are shaped to push against the spring and cause the throttle plate to move toward closed. When the force imparted by the centrifugal weights balances the spring force, the throttle plate stays fixed and the speed holds. As load increases, the speed tends to want to slow down and the centrifugal force starts to reduce which then causes the throttle plate to open to try to hold speed. It doesn't do it exactly because of something called "speed droop" that is designed into the control for among other things, stability reasons. If the load decreases, the engine tends to want to speed up which causes the centrifugal force to build up and the specially shaped weights push the throttle closed to again try to hold speed. There is usually max overspeed protection also that limits the max rpm you can get. Once the governor is properly set up, you should only jave to adjsut it due to some wear in the governor mechanism. It's not like the points which you have to mess with on a regular basis. Yes there is a cork friction disc on the throttle rod that keeps the throttle lever from "creeping". It's located on behind the bell crank that mounted on the firewall. (You'll need to contact John(UK) if you don't have an owner's manual or a shop manual for your tractor if you wnat to know how to replace it.).It often wears out or becomes glazed. There is also a spring loaded adjustment on the throttle rod that allows you to adjust the compression on the fiction disk.
You really need to invest in a set of Factory manuals for your machine if you expect to keep it running well. Get the factory manuals not the ITT manuals as they have a lot of system description info that is very valuable in my opinion.

Hope this ansewers your question.

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DoubleK

05-10-2007 12:26:18




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 Re: Ok, governor 101 for the new guy..... in reply to Jerry/MT, 05-10-2007 11:14:26  
Thank you Jerry very concise! Ok, so the governor works sort of as a 'cruise-control' on my tractor? Works to maintain a constant ground speed under verying work loads? How do I know it's doing it's job or adjusted to where it's supposed to be? I will look for the cork friction disk and try to get this set first so I don't have to constantly hold the throttle lever to maintain rpm/speed on my tractor, then I guess I need to set out with my mower..... ....
GP

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Jerry/MT

05-10-2007 14:55:58




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 Re: Ok, governor 101 for the new guy..... in reply to DoubleK, 05-10-2007 12:26:18  
You'll know it's doing its job when you fix power lever and in a fixed position, the engine speed stays the same as you drive across the field. The actuating lever to the throttle plate will move the in response to the chanes in load as you go up hill and down hill. The factory procedure for cheking the operation is to get the engine to operating temperature, set the throttle to 1000-1200 rpm. (you need a dwell-tach for this.), set the brake shift to 4th gear, release the clutch grdually. The governor lever should pull the throttle rod forward without delay.

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