Not a good day....argh

:( I followed John(UK)'s governor setting instructions to the letter. Unfortunately the governor is completely inoperative, it will not throttle up under load nor limit engine speed. I guess I will pull the timing cover again..... The governor looked fine when I did the rebuild. ??????? What should I look for????? This sucks.

Kevin
 
On a simplistic TO-20 I would say your throttle linkage might be an issue. Now if you have done everything inside the case correctly, double check your linkage also.
 
Is the whole linkage moving freely, nothing sticky or stiff? All connection points should not have excessive play but must also move very freely in order for it to work properly.
 
I had to do mine three times,after the first I had to rebuild the throttle linkage my throttle rod was bent and the hole that the rod fits in was worn,very sloppy(in the thermostat housing) I had clean lube and tighten every fitting. make sure you have a good governer spring and the plunger moves freely good luck!!! You may try to move your govener control arm by hand to see if its working while engine is running if it accelertates and retards then I think you will know if it is working or trying to work
 
Linkage is all ok...... I actually fabricated a new governor to carb link. It all is free to move..... There is a little slop in the ball and socket at the compensator spring but that shouldn't stop the governor from working at all. The upright arm at the back of the generator doesn't even try to move to keep rpm in check.
By the way, the tractor is a 1959 MF204 with a Z134 Continental engine.

Kevin
 
I forth that remark! Linkage linkage linkage. Springs too... It might take a tank of gas to sort this all out, so be patient.
 
Do you have foot throttle peddle,if so make sure that it moves freely and the spring keeps the peddle at the top of its position,check for binding at the end where your cork washer would go also check hand throttle linkage clean and lubricate it all even under the dash!!!
 
(quoted from post at 20:15:21 04/28/13) Do you have foot throttle peddle,if so make sure that it moves freely and the spring keeps the peddle at the top of its position,check for binding at the end where your cork washer would go also check hand throttle linkage clean and lubricate it all even under the dash!!!
I do have foot throttle and i am having problems with it but I wouldn't think it would matter.... Isn't the governor just working against the governor spring pressure? It shouldn't be trying to move the throttle pedal against the cork washer or the return spring correct? How much range of motion should the upright arm at back of gen. have when everything is working correctly? Mine seems to have no perceivable movement under load etc. The only time it moves is when I move the throttle.
Sorry guys, I am an auto technician but cars don't even have carbs anymore nevermind governors LOL
Thanks
Kevin
 
I measure approx 3/8" from fully forward to fully rearward from approx the center of the arm.
Here's a pic of forward and one of back
17140.jpg
17142.jpg
 
Later I can try to get a video of it in action, just home for lunch right now and that's the best I could do.

With nothing connected to the upright arm, start it up, hold the arm toward it's rear position and throttle it up and down manually (and carefully) and see if the arm starts to give you any resistance, you should feel it move. When you throttle up it should push forward........if I am seeing it correctly in my head. You may have to reverse that if I'm wrong.
And I know I don't have to tell you this because you are a technician but I will anyway...........KEEP YOUR HAND AWAY FROM THE FAN!! :wink:
 
On my 202 I have foot throttle, the spring in the foot throttle works as the compensating spring,mine was almost siezed up and the spring broken.I had to take the peddle off to get it to work properly. Push on the peddle and watch the action of you throttle rod (where it connects under the dash see whats its doing. My governer lever only moves a 1/4 to 1/2" from idle to full throttle.
 
Pic shows it not going forward enough, I think the rod going back to the carb should have about 8 exposed threads.
 
I don't know what to tell ya, it's adjusted as per John(UK)'s instructions and it seems to work great. Nowhere in the instructions did I see anything about counting threads.
 
Thanks for all of the info everyone, I guess I will go over the linkage for about the 50th time again this weekend......... I hope it isn't inside, as I said, the governor "looked" fine when I rebuilt the motor. What could/would I have installed wrong inside to make it not work? It was almost two years ago that I had this apart but it has never worked and the tractor was not running when we got it.
Kevin
 
It is a "ball style" governor.
It looks like I won't be able to get back to this for at least the next couple of weeks as I have family obligations and the tractor is an hour away at Dad's place. If I over adjusted the vertical rod, as in made it too long, could/would that make the governor not work at all? I adjusted it until the throttle plate would consistently return to the idle stop when the throttle was pulled open and the closed. the ball and socket joint at the top of this vertical link has some slop so I probably adjusted it tighter that would normally be necessary. I think I am gonna tighten up all of the ball and socket joints, replace the friction disc, and get a proper compensator spring installed before I tear the engine back apart.

I have read the install procedure over about ten times in the service manual and can't figure what i would have done wrong.
What happens if the tab on the governor race is in the wrong spot? The manual says it has to be at 8 o'clock. That is the only thing I think I could have messed up on.

Kevin
 
So..... after much checking, rechecking and debating, we pulled the frontend of the tractor back apart tonight and here is what I found......

Notice the tab at 12:00 instead of 8:00? Would this stop the governor from working at all? If I am analyzing it right, The tab fits into the recess in the cover occupied by the governor arm, if not in the right place it hits the cover stopping the governor race from moving at all. Does this sound correct?
Here are some more photos of the related parts, does anyone see anything out of place that could cause my problems? I would hate to put it all back together to have the same problem.




Thanks again guys
Kevin
 
The governor parts look ok. You said the bearing in the
governor housing was good. I can"t see the end of the bumper
screw. Is it there? How far was it turned in?
 
The governor was not working at all after the rebuild. After following John(UK)'s adjustment instructions I decided we needed to take her back apart. What I found was the governor cup "tab" was at twelve o clock as opposed to eight. I was wondering if this would cause it not to work at all. The first pic shows the setup as it was when I took it apart. The bumper screw doesn't show because I had it backed out all the way as per John's instruction.

Thanks
Kevin
 
(quoted from post at 04:40:05 05/11/13) The governor was not working at all after the rebuild. After following John(UK)'s adjustment instructions I decided we needed to take her back apart. What I found was the governor cup "tab" was at twelve o clock as opposed to eight. I was wondering if this would cause it not to work at all. The first pic shows the setup as it was when I took it apart. The bumper screw doesn't show because I had it backed out all the way as per John's instruction.

Thanks
Kevin
:wink: OK , I JUST had to go thru this with my TO-30. I had the same problamo. I had turned the screw at the govener all the way out as to be finger loose. THEN , turned the screw in , FINGER TIGHT , untill it required a screw driver. Then kept turning in the screw 1 turn at a time , each time testing the engine with load , 4th gear w, brake on. Finally it started . The BALLS she was a moov'n. I then had to go back to the linkage to adjust the vertical rod with sping wrapped around it to get it to pull the throttle before the engine was going to stall. Be patient , keep cool , best if done with 2 people. So they can see if moving under load.
My 2 cents........... :roll:
 
I know I'm a little late on this thread, but is that
washer under the cam nut bent up to lock the nut?
Those rascals have a habit of coming loose and
causing all kinds of trouble.
Irv
 
Well guys, I finally got this back together today and it works!!!! Thanks to all the help from everyone here and John(UK). I had the governor cup installed wrong and the nut was too thick not allowing the cup to seat fully, must have been replaced in an earlier rebuild, I didn't change it and never heard this thing run. I just ground the nut until it was flush with the cam.

Kevin
 
That's great, so much easier to use with a governor that actually works. And now you undoubtedly understand how it all works which will benefit you (and maybe some of us) in the long run.
 

We sell tractor parts! We have the parts you need to repair your tractor - the right parts. Our low prices and years of research make us your best choice when you need parts. Shop Online Today.

Back
Top