 C: If you think you might want to run a remote cylinder in the future, and you want to be able to power the rockshaft as well, there was an upgrade in the mid-50's that used a selectable valve called an AA5724R. You can find them in most tractro salvage yards. This allows you to run either, but not both, the rockshaft or a remote cylinder without changing anything or loosing oil. This valve was installed in place of one of the original you-have-to-remove-the-plugs-to-switch-to remote-cylinder-and-back-again-and-loose-a-bunch-of-oil plugs, but only if you have the later Powr-Trol that has the plug release lever on the right hand side. Using this plug on my 70 Diesel, I can run the rockshaft or the loader, and in fact if I let the rockshaft rotate up, where it stays because the seals are new, then the loader will run all day without switching any of the metering of throttle valves. A lot of people mess with those and get themselves into trouble. A posting a photo of your particular Powr-Tol unit will help. Search for selector valve in the archives and you will find a lot of discussion on that subject from a few years back. It is a much better method, because you will likely pay as much for a couple of used plugs as you would for one selector valve. Now, if you have side-mounted Pioneer couplings on the P-trol box, and you have the plugs in the back that are solid, that is no pipe threads like those that were originally connected to a remote cylinder, then it should run the rockshaft even with the Pioneer couplings in place. Sometimes people try to just put a pipe plug in the original "to cylinder" plugs so that they can run the rockshaft, and that does not work. Frank
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