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Farmall & IHC Tractors Discussion Forum
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966 Clutch Trouble

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chadd

06-12-2007 20:47:53




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Well, I finally got around to adjusting the clutch and the dump valve on our 966. After following Tractor Vet"s procedure for setting tractors with TA and Hydraulic Assist, I started up the tractor and the clutch worked better than it has for years. However, after running it for a few days, the clutch release is becoming very jumpy. When you release, the tractor all of a sudden jerks forward in the last 1/8 or 1/16 of pedal travel when letting up the pedal, instead of gradually accelerating as the pedal is released. The TA also jerks when you throw it forward. Is this caused by a misadjusted dump valve? Do I shorten the linkage or lengthen it to fix it? Thanks.

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Allan In NE

06-12-2007 21:03:15




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 Re: 966 Clutch Trouble in reply to chadd, 06-12-2007 20:47:53  
That's just the way button clutches are. Add hydraulic assist and they become VERY, VERY touchy.

It's this very feature that allows a tractor to start not only it's own weight but also a very heavy implement load in motion and not burn itself up. :>)

Takes a bit of getting used to tho.

Allan



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the tractor vet

06-12-2007 20:59:45




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 Re: 966 Clutch Trouble in reply to chadd, 06-12-2007 20:47:53  
If you fallowed my advice to the letter and adjuted the dump valve with the clutch pedal down to the stop and SCREWED THE DUMP VALVE IN TILL THE LITE JUST COMES ON then let the pedal up and ADD ONE MORE COMPLET TURN IN and lock down it is wright as it can be and if it is not then i have KNOW IDEA what is wrong as i am not there to check and set it myself. So if ya have 9/16th's to 5/8ths free travel on the pedal on a Hyd assist clutch it is fine if you have a standard clutch linkage then ya need the 5/8ths free travel and everything else is set the same clutch brake and dumpvalve.

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