RickB, Thanks so much for taking time to respond. This is my first time using this forum. You sound much more knowledgeable about Ford tractors than myself. I am strictly a jack leg, with some mechanical background. Not sure I know what dead-head refers to. The ford tractor dealer I have been able to gleam some info from, told me that first I must determine the pump pressure. He said it should be appx. 1200-1500 at the stops (wheels turned completly I assume). I purchased a hydraulic pressure gauge and installed it with a T connector in the output line. With engine running pump reads 0 pres. until the steering wheel is moved at which time it reads about 500 psi to the left and only 200 psi to the right. This is with the front wheels full on ground and wheels only turn slightly. If I raise front wheels off ground I can then turn left to the stop and gauge reads 1000psi. To the right however wheel turns completely to the stop but steering wheel will keep turning and pressure is only 500psi. I removed the pump, disassembled, order a seal kit and replaced kit seals. Pump looked tight internally. problem still there. I have since taken out the steering motor and disassembled. Very intricate device. Internally it looks like a small rotatory engine. Internal parts look to be ok, haven't gotten motor back together yet. I have also removed and inspected the wheel cylinders and both appear in good order. I suspect my steering motor. New, this item is $1K. Do you know of any sources for used parts of this type? P/N 86604767
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