 John T: There seems to be some debate about whether you need two selector valves or you can get by with one. I have only had one, and all tractor I have exaqmined had but one. I would have thought that if you needed two JD would have noted that in their parts books. The photo shows my 70D with the AA5724R selector valve with the cover cap removed, in the top hole of the PowR-Trol. A standard open-end plug is in the lower hole. Using the internal stem in the AA 5724R valve you can turn it in until seated to form a rockshaft plug, or out until the lower shoulder is flush with the cap shoulder. The operators manual also speaks about the adjusting the left PowR-Trol mounted metering screw in until seated for remote cylinder use, and out about two turns for rockshaft use. To tell the truth, I've never fussed with mine. I think I might do that today and see what happens. Whatever plugs are chosen, they must route the oil correctly or the rockshaft will not operate. But, one shold also try and forced the rockshaft down so that it has travel to demonstrate an upward movement when testing, since the rockshaft is gravity down only, and not spring-loaded like previous models. Frank
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