Posted by andy r on June 28, 2021 at 19:23:40 from (208.126.193.44):
Had posted a couple days ago about a broken bolt that holds the mower electric clutch on the engine crankshaft. Had a few minutes at the end of the day so I slid the mower deck out from underneath it, put a floor jack under the front and crawled under it with a prick punch and hammer. Took the right tools with me because I was able to work the broken bolt out by hitting the outside edge with a prick punch at an angle. I was fortunate because the bolt was recessed 1/4 up in the crank as there are no threads near the end. Was able to screw out about 3/4 of threads. Eventually I could get a pair of vice grips on it. Not for sure but I think the guy I got it from didn't push the electric clutch all of the way up when he installed a new one. Looked like the electric clutch was hitting the key in the transmission drive pulley as the end of the key was all mangled up. Also, the keyway groove at the end of the crankshaft is worn some. I had seen the electric clutch running once and it seemed like it was sort of wobbling. It all seems to lead to the fact the clutch was not properly pushed up against the transmission drive pulley.
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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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