Those Gresen vane pumps were rated at 1200 RPM The 12 on yours indicates 12 gals per minute at 1200 RPM. Maximum RPM is 1800, at which speed output would be 18 gpm. Maximum pressure is 1500 PSI. It won't start pumping until 500 RPM, as it needs to get up to speed to throw the vanes out and start grabbing a bite of oil. It can be mechanically reversed by taking it apart and reversing the ring and vanes, but you better know what you're doing if you try that. these pumps were commenly mounted on the front of tractors, to get hydraulics for loaders or hydraulic accessories,(such as early Fords, etc.) and connected to the front crankshaft--kits were made to connect them. They were also used in small, single axle dump trucks and run off of an Auxillary PTO bolted to the transmission. Run it off of a Garden Tractor?? I'm doubtful, but if you try use double belts of you'll have a slippage problem
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Today's Featured Article - Restoration Story: Fordson Major - by Anthony West. George bought his Fordson Major from a an implement sale about 18 years ago for £200.00 (UK). There is no known history regarding its origins or what service it had done, but the following work was undertaken alone to bring it up to show standard. From the engine number, it was found that this Major was produced late 1946. It was almost complete but had various parts that would definitely need replacing.
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