Posted by bradfo on October 13, 2008 at 12:56:01 from (71.222.109.58):
The sprocket bolts on my 1975 TD 20C will loosen up after 20 or 30 minutes of use. I tighten them with a 3/4" breaker and a 5" extention. I bought this dozzer with a broken sprocket that I replaced with a new sprocket. bolts on both sides were loose and holes were wore bad. I drilled them out to 1" and used 1" grade 12 nuts and bolts but they won"t stay tight. It looks like the track links might rub on bolt heads. what can I do. Randy
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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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