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WD45 Hyd valve

John Could someone please explain the function of each adjustment and control mechanisms on a WD45 Hyd valve unit. My 3 point works but it returns to the up position by it self.

Lester To run the hdy pump in the hold position you need to adjust it as follows.On the front there is a kurled knob that has to be screwed out as far as it will go,on the rear right lower side of pump the screw on the control arm has to be screwed in to hold the arm in the up position,on the top of the pump is the control valve,the knob toward the from of the pump has to be screwed all the way out, the two plates that come from the control rod,the screw has to be locked together,on the rear of the tractor where the remote hose is hooked in if you have a square box with a knob on it the knob has to screwed in

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