Recently my 3 point hitch started dropping under the weight of its own implement(a box blade) on my B8200. I have checked the piston o-ring and backup ring(both appear good), and am now looking at the control valve/relief valve unit. Just wondering if anyone has had this problem, and where to look for a fault in the unit itself? Is there a way to identify which valve prevents backflow from the implement side, because i think that's where the problem lies.
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