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Re: Hydraulic check valve on IH 460
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Posted by Joe Evans on November 10, 2004 at 21:02:15 from (67.129.216.226):
In Reply to: Hydraulic check valve on IH 460 posted by doorguy on November 10, 2004 at 18:16:33:
Well...this is got me scratchin' my head. I'm not aware of a factory installed check valve servicing the lift cylinder. How would the cylinder be lowered or raised if a check valve allows oil to flow in one direction? I suppose a Hydra-Touch valve would work for the Fast-Hitch cylinder. The drawback would be that the Hydra-Touch valve needs to be manually returned to center once the hitch height is selected. Can you hit the exact desired hitch height every time when plowing for instance? I think not. IF the unlatching valve is not working in the Hydra-Touch valve servicing the hitch cylinder, then it will not flop the Hydra-Touch valve to neutral (center) when the system hi-pressures at the maximum or minimum travel of the lift cylinder. Beyond this, there are a number of things that can keep the system in a hi-pressure condition, but I only understand the causes of this on a tractor that is equipped the way it's supposed to be. It's late, been to my high-school's stag party and have consumed some adult beverages. My thinking says there's no way the lift cylinder would work if there is a check valve present in a ine going to the lift cylinder. Need more information.
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