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 - The Revival of a John Deere Combine - by The Red, John Fritz. For several years I had been driving by a farm house on the west side of Indianapolis that had a John Deere combine parked in high weeds in a lot behind the house. The gentleman no longer farmed because the entire area was developed with housing and light industry. I had stopped several times and knocked on the door but no one would answer. My curiosity was up and I wanted to contact the owner. I wanted to see what he planned to do with the combine.
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