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Farmall & IHC Tractors Discussion Forum
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Hydraulic valve

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old bones

01-24-2005 18:17:37




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i have a 706 with a westendorf loader. the 706 has 2 hyd controls on it from factory, both used by the loader. how can i plumb in a 3rd hydraulic control? i keep the loader on it year around, and use the 7 to pull the planter, as well as move other equipment in and out of the sheds, leaving the bigger tractors hooked up to tillage equipment. it's a pain to unhook the loader, move the equipment, hook up the loader. if it can be plumbed in, does the tractor's hyd system have an internal by-pass, so that when the cylinder gets to the end of the stroke it will safely bypass, or does the factory control system have it's own bypass? any help would be appreciated.
old bones

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Novel Idea Guy

01-25-2005 08:31:56




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 Re: Hydraulic valve in reply to old bones, 01-24-2005 18:17:37  
The hydraulic systems on these tractors have an internal relief valve. You can hold the hyrdaulic handle with the loader fully raised and hear it kick in. The hydraulic system would be very fragile and dangerous without it. The first time you accidentally held the control too long when the cylinder was at its limits, you'd split the pump.

As suggested, the easiest thing to do is plumb a open-center dual-spool valve into one of the existing hydraulic outlets.

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captaink

01-25-2005 07:22:36




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 Re: Hydraulic valve in reply to old bones, 01-24-2005 18:17:37  
I have seen some neat after market electric solenoid hydraulic selectors that can be used to add outlets, but the down side is you have to “switch” back and forth. I have a Westendorf that I put on my 966 and what I did was add a three spool valve on the outside of the cab and built linkages (made out of different size pipes to go through the cab wall) to handles inside the cab to operate the valve spool. I supplied hydraulic oil to this valve spool from one of the two tractor outlets. Worked pretty good and left one tractor outlet open for pulling implements.

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