Pulling from the a point above the axle is never a good idea as it does greatly increase the risk of overturning.
And yes the Ferguson System does operate as described for latteral shock loads. Again you are correct in normal operation pulling a implement through the ground the lift will rise or let the suction force pull the implement deeper. However, if an object is struck (shock load) the top link loads up in compression and pushes past the normal travel range, compressing that big spring on the back and the hydraulic pressure is released immediatly.
You are also correct in that the system does not rely on the compressive force of the top link to push the front down. It's main result is the loss of hydraulic pressure, by opening the pressure relief valve.
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Today's Featured Article - Earthmaster Project Progress Just a little update on my Earthmaster......it's back from the dead! I pulled the head, and soaked the stuck valves with mystery oil overnight, re-installed the head, and bingo, the compression returned. But alas, my carb foiled me again, it would fire a second then flood out. After numerous dead ends for a replacement carb, I went to work fixing mine.I soldered new floats on the float arm, they came from an old motorcycle carb, replaced the packing on the throttle shaft with o-rings, cut new ga
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