Posted by jollyrancher1975 on January 06, 2014 at 16:52:14 from (68.69.88.17):
my 3 point with a heavy 7 foot blade has some bobbing. it drops like a half a inch then raises, this happens rather quickly.When I shut the tractor off the 3 point slowly drops about 6 inches and stops. I looked inside fill plug with it running and saw no drips from the piston or anywhere else. I took the lift cover off and tore down the cylinder, the control valve looks fine, just some light wear on it no scuffing. my service manual points to the control valve. my problem is the cylinder has no paint on it so I don't know which one to order, yellow,blue or white. does anyone know what the difference in diameter between the colors? any other good way to trouble shoot a bobbing 3 point system, thanks for any help. rob
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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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