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 - Tuning-Up Your Tractor: Secondary Ignition Wires and Distributor - by Curtis Von Fange. In our last episode we spent the entire day checking out the spark plugs. Is that efficency? Actually, it took more time to explain than it really did to do the inspection. At any rate we decided that a compression test was in order so we could verify the internal engine status. That way we wouldn't buy any tune up parts until we were sure that the engine was in reasonable mechanical condition. Our tests showed a fictional compression reading of 85, 80, 82 and 86 psi. That is well within a
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