1966 Ford 2000 Throttle Issues

My Dad has a 1966 Ford 2000 3 cylinder gas tractor. He has been complaining that when he sets the throttle at around 1500 rpm, it will stay there until the governor is needed and the governor opens the throttle more, then the problem is the rpm stays at whatever the governor raised it to, maybe 2000 rpm. The rpm stays there until he adjusts the throttle control by the steering wheel. Then it just repeats, so when he is plowing or bush hogging, the tractor constantly goes to full throttle and stays there until he manually adjusts it. He has already made sure the bell crank on the intake manifold is moving freely, it was removed, inspected, and lubed. Our question is would this be in the governor or the carburetor, it has the original Holley on it. He thinks its the governor, but I have read on here that many people don't like those carbs. How do we check the governor operation on this tractor? What usually goes wrong with them? Thanks
Right now we don't have a manual for this tractor, but are going to try to find one.
 
I had a 4000 gasser that was having governor
problems similar to yours. What I found was
the shaft on the bell on the govenor was not
getting adequate oil and the old oil in
there was gumming/waxing up so the shaft did
not slide properly. It must slide fore and
aft freely to work.
I had to pry the bell/shaft out as it was
gummed in there. It should pull out with 2
fingers.
I would remove the governor cover and check
that.
I can't remember if you can pull the
governor with the radiator in place. Try it.
Otherwise you'll have to remove the nose and
radiator. I parted that engine/tractor out
so never bothered to inspect why it wasn't
getting adequate oil.
There is a small oil tube that goes from the
block to the gov that might be plugged.
With the bell/shaft removed and the oil tube
removed you could probably ream/clean/blow
out the passages and get oil flowing in
there again.
I don't know if that is your problem but
only relating what I found. Those governors
are generally pretty reliable.
Keep us updated on this. We are all
constantly learning here.
 
Thanks for the help, what he found was the bell crank on the governor cover had gotten a lot of slop in it. This would allow the governor speed control lever to not ride on the bell crank like it was supposed to do. When the bell crank moved to far side ways, due to the extra slop in it, the speed control lever would go to max throttle and stay there. He removed the cover and machined a new pin to retain the bell crank where it is supposed to be. So far it seems to now be working properly. Thanks
 

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