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Govenor In-operable

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Ron in Ohio

08-24-2002 12:29:45




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Ok well this is the first time I have posted a question on this board so here it goes. I have purchased a 1941 9N ford that seamed to have govenor problems.( When the r,s bog down the govenor wont kick in) I have read lots on this board and have dis-assembled the govenor completly to find it in overall good shape. I see very little marking on the ball races and the balls are perfectly round with no flat spots. It all seams to work well.....the inner shaft had some play so I shimmed it as my manual told me to and the slop came almost completly out. So to my question..... ...I am NOT a 9N mechanic but have built other motors before and atleast know my way around a garage. Just barely some days lol. Ok here it goes can any other factors prevent the govenor from doing its job? I have the carb off and it looks like new but im kitting it anyway, I have the distibutor out and have replaced the points roter cap ect. per manual specs...oh by the way my distributor is front mount. I have checked the firing order and it is correct. I am in the process of checking the screens for cloging also..... ...but from what I know of a govenor it should kick in when the rpm drop reguardless of what rpm Im at or if the tractor is tuned right...Am I wrong in thinking this way? By the way one other thing I do not have the govenor stop screw in the govenor because it was missing when i bought the tractor.....I have a new one now but would that cause the govenor not to react to rpm? I know I am asking alot of questions but any help would be greatly appreciated Thanks.

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Dave Smith

08-25-2002 06:50:49




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 Re: Govenor In-operable in reply to Ron in Ohio, 08-24-2002 12:29:45  
To check the operation of the govenor have the engine ideling in neutral. While watching the linkages shove the throttle lever to full high speed. The throttle should pull the govenor rod to full high speed through the spring. As the engine speeds up the fly balls in the govenor will move out by centrifical force and pull the carb back to a slower speed stretching the spring. It should peak out at about 2200 rpm. If the govenor does not pull the carb down you probably have problems inside the govenor. The spring should be adjusted so as to have no play but still have no tension on it. Kinda trickey to adjust by bending the end of the spring closed. If you're engine speed does not change smoothley as you move the throttle slowley to a higher speed, the spring may be stretched and loose. A new spring is only $3.00 from Don B. I hope this makes sense to you and I explaned it clear enough.
Dave <*)))><

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Mountainman

08-24-2002 21:15:18




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 Re: Govenor In-operable in reply to Ron in Ohio, 08-24-2002 12:29:45  
A few thoughts:

Make sure the forks on the inside are installed in the correct direction.

Make sure the spring on the outside is adjusted absolutely perfect, as anything else won't do.

Spin it over by hand enough to get the balls to spin out and make sure the forks have full range of movement.

It does sound like a governer problem but it could be fuel starvation or coil, condenser, resistor etc. related.

Since you have the distributor out, check to make sure the centrifical advance weights are functioning correctly. And check to see that the shaft isn't loose. Points can slip so check again after final tightening.

It's easy to check two of the three fuel filters. You have to drain the gas tank and unscrew the valve/bowl assembly to check the third one. Worth the time.

Mountainman...CA

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Ron from Ohio

08-24-2002 21:51:27




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 Re: Re: Govenor In-operable in reply to Mountainman, 08-24-2002 21:15:18  
Well I think the forks in the govenor are in right. I put them back the way they came out but I know that does not always mean they are right. i can tell you this..... ...I had to drive the pin out of the forks by putting a punch in the oil hole and driving it that way...Does that help? If you remeber what way is right maybe that will tell you if I have mine in right or not. thanks for the help.

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Mountainman

08-24-2002 22:37:59




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 Re: Re: Re: Govenor In-operable in reply to Ron from Ohio, 08-24-2002 21:51:27  
I really can't remember which way I punched the pin in or out. Look in the FO-4 for how to tell which way is correct or just check to make sure of the full range of motion without interference of the forks with the spinning parts.

Rusty also had a good comment about the linkage ends (gov to carb) being worn and causing the very problem you describe.

Mountainman...CA



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Dave OH

08-24-2002 14:59:28




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 Re: Govenor In-operable in reply to Ron in Ohio, 08-24-2002 12:29:45  
You may just find, to your displeasure, that the three filters were your problem in the first place. Without enough gas the tractor will bog as I found out, the hard way. The economizer in the carb can plug up also.
Dave OH



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