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JD A governor

A

Anonymous-0

Well-known Member
The governor is not working at all on my 45 slant dash A. What should I look for first? I had the A at our local fair last summer to run the thresher and we couldn't get nothing out of the governor. The tractor did sit for about 3 years in my garage. We took the cover off by the flywheel and everything looks good the weights seemed to move freely. Thanks for any help
 
In the owner's manual for my 50, there is a set up procedure for the carb linkage to insure that the governor is within its range. I had a similar problem on my 50 only to discover that the carb shaft was off 1/2" in length. Once the shaft was corrected, the governor works perfect.

I, also, removed the governor only to discover it looked excellent. Then, I remembered the section in the owners manual.
 
Did it ever work correctly? I always check to make sure that there is no stray cotter pin hanging up at the carburetor. That can stop things up.

If all movement is free, I would disconnect the rod at the carburetor, and start the engine, using your left hand to operate the carburetor throttle butterfly. Hold the rod from the governor with your right hand. If you leave the throttle lever in the idle position, everytime you speed the engine up, the rod in your right hand will attempt to move to regulate the engine speed. This can tell you if the mechanism in the governor is at least working. If all is good, turn engine off, then place throttle in wide open position, and hold carburetor butterfly wide open as well. Now the rod coming from the governor to the carburetor should be one-half hole short from connecting. You will stretch against the leaf spring on the governor arm to connect it. This provides preload to remove the play from all of the mocving parts. If the rod is not set at the half hole distance, adjust that and it should work.
 

FIT...would that "1/2 hole short" apply to most any engine..such as a twin cylinder Onan..??
That thought just crossed my mind and that doesent happen very often.......!!!!

Just wondered if that could be a fair rule to go by..??

Thanks..!

Ron.
 
BP:

In a very general sense, I would say yes. Nearly every governor setup that I am familiar with uses a preload to remove the inherent play from all of the pivots, pins, bushings, and bearings. But it might depend on whether the governor pushes or pulls the linkage.
 

Yes, I never thought that some "push", also.....!!!

I have an Onan BobCat engine in an old Bolens mower and the engine over-runs some when the load is reduced..not sensitive enough...
Guess it may be time to adjust it..!

Nice to know that any small-bore Onan can be bored to the "Big Bore" size (+.250")...really made a difference in that mower...!!! Maybe the porting and dual exhausts helped it too...???
Ron..
 
Hi F-i-t,
I have tried that and there is nothing out of the governor at all, no response.Just wondering what I should look for when I remove it. Thanks for your help!
 
If you have no governor response at all, I would think that the bronze sleeve that slides left and right pushed and pulled by the flying weights, is stuck.
 
(quoted from post at 14:51:44 03/30/09) If you have no governor response at all, I would think that the bronze sleeve that slides left and right pushed and pulled by the flying weights, is stuck.
Click to expand...
hat’s exactly what was wrong with my 60. It took a good oven cleaner and pressure washing and a week or two of soaking it with penetrating oil every day and bumping back and forth to finally get mine to move. Then I had to use emory cloth and lots of TLC to get it sliding smoothly.
 
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