Posted by LRRifleman on April 15, 2011 at 12:40:54 from (107.26.251.187):
Hello!
I have a 1958 International Harvester Model 340 Utiity. When it was in the shop over the winter to repair the hydraulics, I had the shop repair the tachometer, which has never worked since I purchased the tractor. I know the tach is working because the "hour meter" IS moving. However, the tach needle bobbles extemsively as if it was indicating more the vibrations of the tractor. As it is running now, I can only "ball park" the rpms of the tractor (in a 400 rpm range). I can only presume this is not the way the tachometer is supposed to work.
Is there anyone out here that has an IHC that can tell me whether they can get a relatively precise RPM reading for their tractor? I am inclined to believe I need to replace the tachometer. Currently, my tachometer is reminiscent of a cheap compass caught between multiple magnetic fields.
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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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