Most 504's have a 2 section hydraulic pump- I think one section is for steering and 3 point, the other for auxilliary- but don't quote me. Several different setups, industrial might be different, your mileage may vary, some assembly required.
All of which is to say you just about have to get a book to sort it all out. Guess I'd suspect the pump, unless you can figure out where all that oil that used to steer your tractor is now going.
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Today's Featured Article - Usin Your Implements: Bucket Loader - by Curtis Von Fange. Introduction: Dad was raised during the depression years of the thirties. As a kid he worked part time on a farm in Kansas doing many of the manual chores. Some of the more successful farmers of that day had a new time saving device called a tractor. It increased the farm productivity and, in general, made life easier because more work could be done with this 'mechanical beast'. My dad dreamed that some day he would have his own tractor with every implement he could get. When he rea
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