This is NOT the Oliver 550 tractor. I have emptied the whole system and cylinder of old fluid and reassembled with the arms down. I put in new fluid and started the tractor with the lever in DOWN position. When the tractor started, the arms immediately raised to the top and stayed there after motor was turned off. I agree about your point on a blockage, but where? In the return line to the pump? Could a bad control valve be the culprit? Or the saftey relief valve?
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Today's Featured Article - Tractor Profile: Oliver 70 Row Crop - by Staff. The Oliver 70 was part of the "Fleetline Series" and was manufacturered from 1937 to 1948. The row-crop configuration could have either dual or single front wheels. The Oliver 70 was also offered in the standard, orchard and industrial configurations. The tractors were sold in Canada. An early advertisement states "Power when you want it - power when you need it - power to help put in crops when field conditions are right and time and help are limited. That's the power you'll find in an Oliv
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