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Re: Curious about a Farmall M's hydraulics and stu
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Posted by chadd on April 25, 2007 at 04:55:19 from (155.92.32.116):
In Reply to: Re: Curious about a Farmall M's hydraulics and stu posted by DC_PA on April 24, 2007 at 19:25:19:
Not sure if you just mistyped or I am reading your post wrong, but "live hydraulics" are not "dual hydraulics." Live hydraulics means that the pump is driven directly off of the engine or in some manner, obtains its power from a shaft that is driven whenever the tractor engine is running. This allows the clutch to be depressed and the pump to still operate. Any system, regardless of its pump can be made into a dual system, as the valve, not the pump location decides that. Dual hydraulics means that the pump pressure can be applied to either side of a hydraulic cylinder. In this way, it can power implements that are unable to use gravity to return them, such as an aiming baler thrower or lifting a disc's wheels in the air to go in deeper. A single way hydraulic system can provide pressure in the up direction, but relies on gravity or some other force (such as a spring) to return the cylinder and the implement to the down position. IH made a retrofit kit around 1951 or so to provide 2-way hydraulics for Farmall H's or M's for those that needed it. It still used the belly pump (which isn't live) but our 1940 Farmall M has it and can provide up and down pressure to the implement.
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