Be advised that the ball and pin on the front end of 3 point hitch lower link that attach to tractor are different than the ball and pin on the rear of the lower link that attach to the implement. The front pin attaches to the draft sensing crank arms. This pin is 1 inch diameter. There is a bushing used inside the ball so the ball fits snugly on the pin. I have replaced this bushing before and to the best of my knowledge and memory , this bushing is not a metal material but a resin plastic material. The pin has a grease fitting on the end of it and is bored inside so grease is injected between the bushing and the pin for lubrication. I worked on a tractor once that someone had replaced the original front ball with a standard cat II lower link ball. (Cat II balls fit 1-1/8" pins.) It had play between the 1" pin and ball. I acquired the bushing from IH to install in this ball but it would not fit. The hole through the front ball is larger diameter than a standard Cat II ball. I will remove the pin from one of my tractors and drop the hitch link down so I can measure the front ball for dimensions and will post my findings tomorrow.
I think that if you replace your front ball with a standard Cat II ball , you will be disappointed in the fit.
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Today's Featured Article - Third Brush Generators - by Chris Pratt. While I love straightening sheet metal, cleaning, and painting old tractors, I use every excuse to avoid working on the on the electrics. I find the whole process sheer mystery. I have picked up and attempted to read every auto and farm electrics book with no improvement in the situation. They all seem to start with a chapter entitled "Theory of Electricity". After a few paragraphs I usually close the book and go back to banging out dents. A good friend and I were recently discussing our tractor electrical systems when he stated "I figure it all comes back to applying Ohms Law". At this point
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