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throttle on my 48 WD

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bob in Ky

04-12-2004 06:02:38

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I was disking Saturday and the throttle suddenly went to wide open. I had no control over it. I shut the tractor off and wired the throttle to the alternator bracket. Now I had low throttle and nothing more. Have I broken the cross shaft on the throttle linkage that comes in front of the engine or have I lost a spring? I have looked in the tractor manual that I have but it does not show this area very well. Thanks for any help you could offer.

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Dave K

04-12-2004 11:19:39

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 Re: throttle on my 48 WD in reply to bob in Ky , 04-12-2004 06:02:38  
I just looked at my 48 WD and the AC parts book. What I believe you call a "cap" is the cross shaft "collar" which connects the horizontal shaft with the vertical one and the carb linkage. This collar has a tapered pin in it to hold it tight. You may have lost the pin or it has backed out enough to give you the slop. There should be absolutly no movement in this collar on the shaft. Check that out before you try to go into the governer!


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bob in Ky

04-12-2004 13:02:17

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 Re: Re: throttle on my 48 WD in reply to Dave K, 04-12-2004 11:19:39  
Dave, I believe you hit the nail right on the head. There is a considerable amount of slop in the cap at the end of the cross shaft. I will check this for a pin before I tear anything apart. I have another governor that came with my tractor. I may still send it to butch to be rebuilt, just to have it around in the future. Thanks again for all of your help.

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04-12-2004 06:27:26

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 Re: throttle on my 48 WD in reply to bob in Ky , 04-12-2004 06:02:38  
The governor spring opens the butterfly and the the weights close it so you dont have a broken spring, you have mechanical troubles in the governor. Broken weights or pins or possibly the cross shaft you mentioned but it is not likely it is broken, if the trouble is in the shaft is more likely the fork that runs aganist the weights is worn out or loose on the shaft. Governor parts have a habit or wrecking timing gears as they pass through, dont run it anymore untill you find the problem.

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bob in KY

04-12-2004 09:50:52

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 Re: Re: throttle on my 48 WD in reply to Butch, 04-12-2004 06:27:26  
Thanks for the reply Butch. How do I go about approaching this problem. Should I take the governor off and take it apart? When the tractor was running wide open, I could take the shaft out in front of the carbeuretor and move it forward and the idle would come down. That is why I wired it to the alternator bracket. There is a cap on the end of the cross shaft that comes across the front of the engine. It appeared to have a lot of slop in it, so much so that I could move it back and forth without moving the rest of the linkage on the right side of the engine. Manipulating this arm affected the idle speed. Where do I start?

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