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Farmall & IHC Tractors Discussion Forum
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H hydraulic liftall question

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Scott Rukke

10-07-2007 14:15:34




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I am installing a 2-way valve so that I can operate a back blade with power up and power down. My question is about the liftall control rod and pump. Is it OK to leave the rod and pump operating continuously or will this damage the pump. My valve has a return line but the relief is set at about 2000psi. I am not sure I can get the relief down much below this set point. Is there an internal relief on the liftall?

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williamf

10-08-2007 02:03:04




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 Re: H hydraulic liftall question in reply to Scott Rukke, 10-07-2007 14:15:34  
In addition to what Jim said, and just to be clear, the Liftall pump runs all the time that the clutch isn"t depressed. The lever just works the internal valves, doesn"t start and stop the pump.
Good luck, Wm



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Janicholson

10-07-2007 14:25:14




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 Re: H hydraulic liftall question in reply to Scott Rukke, 10-07-2007 14:15:34  
The lift all has a relief (much lower than that, less than 1000psi) the lift all control rod can have a new little detent brazed to the under side to hold it back in the on position. As long as the valve you install is an open center device, when the valve handle is in the middle, it will be fine. When not using the hydraulic, it is probably good to put it back in the hold position of the stock detent stub. Plumb the return line into the bottom drain plug with a T. the use of a T on the fill plug causes oil to come out the cap. If the devices use two way cylinders, and you check the oil as they get used to working, all will be fine. JimN

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