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Re: Re: Re: Re: Re: Re: 3 Point Hitch Hydraulics - Moving Heavy Clay with Blade
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Posted by paul on May 30, 2001 at 23:52:38 from (209.23.145.41):
In Reply to: Re: Re: Re: Re: Re: 3 Point Hitch Hydraulics - Moving Heavy Clay with Blade posted by Glen 7580 on May 30, 2001 at 19:33:30:
Guys, I have never seen a 3-point that had double-acting cylinder(s). This is the _only_ way you would get down-force on the blade, which is what you need here. Those IHC 2-points were pretty handy - I have a 300 I really like. It runs from a double-acting cylinder that puts the hitch where you want it, & leaves it right there. When changing wheel spacing, I can 'jack up' the tractor with the hitch on a block of wood. A 3-point hitch does not work this way. It picks things up, but it lets gravity pull them back down. Also, the 3-point can float upward at any time - as yours does. Position & Draft contols only work with-in those limits. Position will raise the 3-point to a certain level - but the arms are still free to float higher than this. Draft will raise the arms higher if your tractor starts working harder - this alows you to pull a plow, and stay in a single gear all day, with the tractor adjusting the plow height in heavy soils. In very sensitive modes it may work to keep light implements just skimming on the ground, etc. But, never will the 3-point exert downward force, and always the 3-point will be able to float higher than the lever settings. I don't know of any USA tractor 3-point that works differently. They all have internal, single-acting hydraulics on the 3-point. Add-on 3-points for older tractors that didn't have 3-point probably can & are used with double-acting cylinders, but at 180 hp and a factory 3-point, I don't think you will ever get this arrangement to work for you the way you want. Might need a real good loader bucket on that tractor with double-acting cylinders to move what you want to move. --->Paul
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