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Harry Ferguson Tractors Discussion Forum
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TO-20 Races/Doesn't stay at low idle

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Dan Oehmke

05-10-2008 17:03:09




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My TO-20 engine starts to really race away if I don't hold the throttle lever up to keep it at slow idle. Doesn't matter where the throttle's set, it always wants to speed up. What should I check or adjust so that it stays where I put the throttle lever? Thanks! Dan




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Dan Oehmke

05-11-2008 18:10:01




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 Re: TO-20 Races/Doesn't stay at low idle in reply to Dan Oehmke, 05-10-2008 17:03:09  
Thanks guys for all the help. I'll check it out and see if can get things back in line.



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gerard

05-11-2008 15:34:47




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 Re: TO-20 Races/Doesn't stay at low idle in reply to Dan Oehmke, 05-10-2008 17:03:09  
Snap. My TE does the same - set the throttle to tickover & the governor slowly pulls the throttle open to almost half revs. Most annoying - and the friction disk is set quite tight. Must look at governor linkage again, "though I thought I"d set it right.



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John (UK)

05-11-2008 10:16:30




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 Re: TO-20 Races/Doesn't stay at low idle in reply to Dan Oehmke, 05-10-2008 17:03:09  
From how you describe it, your engine runs much faster than it should do and the throttle lever won't stay in the position you leave it. If the engine is running fast like that it needs the Governor linkage resetting to limit the speed. If the lever won't stay in one position, it either needs adjusting or a new friction disc fitting, this is at the back of the Air Cleaner on the long rod to the front of the fuel tank. The friction disc you could make or you can use one from Sparex part number S60635 or you can get one from an MF dealer as part 79024793V1.If you have to fit a friction disc you will have to reset the governor linkage. If you need the information on how to adjust the Governor linkage you can email me at ([email protected]) so I can send you the information and pictures....John

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Griz

05-11-2008 08:20:28




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 Re: TO-20 Races/Doesn't stay at low idle in reply to Dan Oehmke, 05-10-2008 17:03:09  
I made a disk out of an old mouse pad. Doesn't slip a bit.



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Jerry/MT

05-10-2008 18:18:17




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 Re: TO-20 Races/Doesn't stay at low idle in reply to Dan Oehmke, 05-10-2008 17:03:09  
There is a friction disc made out of cork on the bellcrank under the dash that fits btween the bellcrank and the fire wall.They wear out and then there is no friction to negate the throttle creep.



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gshadel

05-11-2008 04:56:31




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 Re: TO-20 Races/Doesn't stay at low idle in reply to Jerry/MT, 05-10-2008 18:18:17  
Dan, when you replace that friction disk, I made mine out of a piece of common cork gasket sheet material. That lasted a few years and started to slip. So I made another one this Spring out of a piece of rubber sheet I had laying around. We will see how that will last. Also check the spring and stop block on the throttle shaft on the backside of the dash. That spring holds pressure against that friction disk. Might need to loosen the stop block and push it up against the dash a bit more to put more pressure on the friction disk.

George

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