Posted by JerryF on February 12, 2008 at 19:52:50 from (75.88.91.214):
656 Gear drive. Back pump works fine, but front pump bare puts out enough pressure to lift loader if engine at WOT. Power steering works, but doesn't quite seem 100%. I changed pressure relief valve and font pump from a donor tractor, that I know were good. After changing pump and relief valve, pressure is around 800psi at the couplers. The inside control valve sticks (almost locks at open or close) and just doesn't seem right, but the second is smooth. Pressure out of each is around 800. Could the problem be the contol valve or is it more likely the stering proportioning valve or a suction tube inside? I am fustrated, thanks for your help.
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Today's Featured Article - A 1937 John Deere Unstuck - by Gary Hickman. Here is my story of how I got the pistons out of a 1937 JD B that the engine had been stuck for about 14 years: About 12 years ago my Dad gave me one of the tractors I ran as I was growing up on our farm in central Nebraska. The engine on this tractor, a 1937 John Deere "B", had been stuck for 2 years before he gave it to me. This last spring (1999) I hauled the tractor to our 2 acre lot in St. Libory Nebraska where it joined my antique machinery collection, at that time a 1929 Caterpillar T
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