The valve shown in the picture is called (in common IH terms) a Christmas tree valve. It is a OEM style 2 way pressure open center valve. The original installation connected the return pipe as it is in the picture. The supply pipe was from the Elbow shown half way down the side and behind the Liftall pump control lever (now locked in the on position with the rusty strut) if the input to the Christmas tree is from the other side of the tractor, and is attached to the front most elbow on that side, it is a non-live Liftall, Belly pump, and, as Delta indicates, it does not lift when the clutch pedal is pushed in. If the hose goes to the front of the engine, and a external hydraulic pump is bracketed near the governor, and belt driven from the crank, then it does have live hydraulics, and is using the belly pump for a reservoir. In either case, the dumping of return oil from the open center design splashes oil into the filler neck pretty radically. To "fix" it so that does not happen, the valve is going to need to be mounted with new brackets and held in place to allow the re-routing of the return to the bottom drain (with a T and closed nipple) so it does not splash. Jim
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Today's Featured Article - The Cletrac General GG and the BF Avery A - A Bit of History - by Mike Ballash. This article is a summary of what I have gathered up from various sources on the Gletrac General GG and the B. F. Avery model A tractors. I am quite sure that most of it is accurate. The General GG was made by the Cleveland Tractor Company (Cletrac) of Cleveland, Ohio. Originally the company was called the Cleveland Motor Plow Company which began in 1912, then the Cleveland Tractor Company (1917) and finally Cletrac.
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