[AT] CA tractor with goofy governor--question

[John Wilkens]

My good neighbor has an AC CA tractor that runs great.  He just rebuilt the 
lower end and I reconditioned the head for him.  Problem is it will not 
stop surging--at idle or under load.  Our books/manuals are very sketchy at 
best on how to adjust the governor.  They say to adjust the spring tension 
but they don't mention which springs or what tension in pounds!   We 
haven't found anything that works.  You can hold the throttle rod from the 
governor and steady it up, but any little change of the throttle will start 
it surging again.  Anybody with a CA that has had this problem--and figured 
the solution?   John

                    In the wide-open spaces of NE Oregon