Real easy to adjust. I made up a tester using a pioner male end, reducer, 6 inch nipple, 1/4 inch coupler and and old airco oxygen regulator gauge. The adjustment is on outside of the hydraulic pump. It is on the upper front part of the pump. There maybe a wire twist lock on it Use a big screw driver to turn it out for less pressure. If it has not been touched for a long time you may have to use a torch to help it along. Also, have had some foreign material get in it. If you have to take it off(4 sllen bolts, make sure you have an extra gasket and 2 little orings that go between the valve and pump. The gasket is paper thin and almost always tears. If this does not help, there is a wealth of knowledge on the Oliver board. I still have a few Whites left with more than 10 to 12,000 hours. Bought my first one in 1976. They have been good tractors and fairly economical to keep running. I have never blown out a coupler. Pioneer uses 2 or three styles. Maybe you have a mismatch. I take that back I had one fall off and it rubbed part of ball off on road pavement. ps If You need any parts and can not find them anywhere else, shoot me an email. I still could spare a few.
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Today's Featured Article - Old Time Threshing - by Anthony West. A lovely harvest evening late September 1947, I was a school boy, like all school boys I loved harvest time. The golden corn ripens well and early, the stoking, stacking,.... the drawing in with the tractors and trailers and a few buck rakes thrown in, and possibly a heavy horse. It would be a great day for the collies and the terrier dogs, rats and mice would be at the bottom of the stacks so the dogs, would have a busy time hunting and killing, all the corn was gathered and ricked in what we c
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