TPat, Any good JD Dealership worth their Salt should be able to get any and all part needed to fix or rebuild a Power Shift. That tranny was virtually unchanged through the 40 series. As Jim said only 2 real way to damage the trans was to tow with our unhooking the disconnect or run low on oil/ My relatives were at a new Demo of the 30 series tractors. Rep told them the tranny was capable of this....On a 4630, Throttle at Wide open, Trans Shifter in N, bottom of the forward gears.... then shift all the way to 8th,Hi Gear, Use no clutch. The tranny would not be hurt at all. OBTW you had better have the seat belt on or it would jump out from under you!!! My neighbor had his 4430 worked on 2 yrs ago. Not his or the tractor fault....some kids vandalized it. had no problems get it fixed. He used the JD dealer @ Goldthwaite,Texas,,,Lawson Equipment Co. Hope this helps. Later, John A.
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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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