The only real difference between a 306 and 309 pump (or a 314) is the plunger cut. The actual plunger is interchangeable between nearly all of those pumps (except for being match ground). IH made adjustments to each for different RPM settings and stuff like that so you will see different springs in use. Yes they will basically swap.
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Today's Featured Article - When Push Comes to Shove - by Dave Patterson. When I was a “kid” (still am to a deree) about two I guess, my parents couldn’t find me one day. They were horrified (we lived by the railroad), my mother thought the worst: "He’s been run over by a train, he’s gone forever!" Where did they find me? Perched up on the seat of the tractor. I’d probably plowed about 3000 acres (in my head anyway) by the time they found me. This is where my love for tractors started and has only gotten worse in my tender 50 yrs on this “green planet”. I’m par
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