Governor surging

[amecks]

Hi. 1958 Cub Loboy is running well except for a surge that comes and goes. The governor responds to load well, but it will surge up and down in RPM such that it is impractical to use the tractor. For example, it will run OK on level ground but if I drive it up a slight grade the governor responds and then it surges and may even continue after hitting level ground again. I have recently done the following work on the machine (you're now saying "UH-OH!") : ignition tune-up and timing adjusted, fuel line and carb cleaned and adjusted, and the governor adjusted. There is a statement in the manual about the bumper spring and surging. I did try turning the bumper spring a little but I'm not sure how far to turn it, and not sure this is the solution to the surge. Aside from surging the tractor is running great and was being used to mow a couple acres and right now I'm using the grader blade. Thanks. Al.

[Rudi]

Al:

First, to the greatest forum on the internet, and to the Cub Family. You will find that all the folks on this forum are kind, helpful and just full of Cub info and knowledge. They also happen to be the finest folks I have ever met

Al, it seems like you are doing all the right stuff. I imagine it is probably just something simple. My chum's Cub did the same thing. The bumper spring actually needed to be replaced then adjusted. Carb settings needed to be readjusted after the bumper spring was replaced.

Hopefully Lurker Carl will see this thread. Carl has all the notes from the Governor rebuild workshop at our Cubfest and he would be one of the guru's who would have a lot better clue as to what may be wrong.

I would have a read on H.L. Chauvin's articles.. as there is some interesting insights contained within when it comes to diagnostics...

Hope the following will be of some help. There are a few good info sources on the server that might be of use.

Ok, so here is the spiel :

I would suggest that you read this thread: New Members and Visitors, Please READ Prior to Posting. There are many great links to informative pages such as the ATIS FAQ's 1 and ATIS FAQ's 2, The Best of H.L. Chauvin who has written very interesting articles on troubleshooting common problems with your Cub.


Also, you might want to visit the Cub Manual Server as there is tons of info on servicing, maintaining and re-building your Cub. In addition to this basic information, there are also a number of other useful tools available on the server. There is the Specialty Services page which has contact info for neat stuff like getting your seats recovered, buying quality Decals, Serial Number tags and a host of other neat items. Also there are the Parts Pages - both Used Parts Suppliers and New Parts Suppliers pages with links to quality dealers. I am always looking for YOUR favourite dealers for New and Used Parts to include here. These are intended to complement the businesses who support FarmallCub.com Website.

I would also recommend that you visit Binder Books and purchase the three most important manuals you can own for Maintenance, Repair and Rebuilding your Cub. These are the Owner's Manual, the GSS-1411 Service Manual and the TC-37F Parts Manual. Although they are available on the Cub Manual Server, it is better is you also have your own paper copy. Binder Books is the only Authorized IH Publication Reprint House and they have the best quality manuals available. Most other's are not of the same quality. Just a personal thought here, the I&T Shop Manuals, although helpful in some areas, really are not sufficient for the job. If you wish though, they are good additional reference works.

IF you really want to get the skinny on all things Cub, might I suggest you get a copy of Ken Updike's Farmall Cub and Cub Cadet's . Along with Guy Fay's Letter Series Originality Guide, these are two must have's in anyone's collection.

In addition to the above information, don't forget to check out the various articles that are available to help with your Repair, Restore, Rebuild or just your Maintenance Projects. There are a number of sub pages such as Electrolysis or Rust Zapper's, Maintenance Tips, Jigs and Techniques, Implement and Part Sketches and of course the Paint, Decals & Other Finish Questions which has the Paint Chart and the Paint Committee Decisions links.

I truly hope that you enjoy your Cub and that you will be a frequent contributor to the forum. Again, to the Cub Family

[John *.?-!.* cub owner]

Al, first thing I would do is check for binding of the rod going from the governor to the carb. Teh only thing you will do if you tunr the bumper in to far is limit the governor responce.

[WKPoor]

I'll bet the governor isn't the problem. Its probably tuneup related. The governor is only trying to maintain power. If the engine has a problem under load it will appear its the gov. when in fact its the engine itself.

[double R]

Had that problem a few years back and the gov. was out of adjustment. That fixed it.

[Dan England]

double R: What is the procedure for making the adjustment? Dan

[Rick Prentice]

I agree with WK. I have one cub that does exactly the same thing. It has a dirty carb and if I tweek the mixture screw on the carb, the surging goes away. Just my .02, Rick