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This is the valve block at the rear of the tractor, to use a tipping trailer one spool is fine - because the weight of the trailer lowers the hydraulic ram. But with other implements you need double valves or spools. A double acting spool can push the hydraulic ram up and pull it back down again Important before doing anything to hydraulics make sure that system is not under pressure and that no implement will fall down on someone when the pressure is released. Hydraulic oil lines and fuel injection lines can be pressurised to 1000's of PSI when in use. |
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To get a 3rd service I bought an electrically operated hydraulic diverter valve which I fitted in the "Crowd" ram circuit. The diverter valve is activated from a push button switch, via a relay, on the second lever in the cab, when I press the button the solenoid diverts the hydraulic oil to the cylinder in the this case the ram on the bale grab and when I release the button it allows the oil back to "Crowd" rams so I can angle the bale grab. One of the companies that make 6 port electric diverters are the Walvoil Group - I don't think they sell direct to the public. I used a Walvoil model DFE 10-6-003 which costs about £110 this came from T. Cook Ltd, Agrispares (Devon) 01837 810230 |
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This is the wiring diagram showing the flow only going to one cylinder in my case I used a Tee piece to connect both crowd rams. And the 3 service valves are connected directly to the diverter valve.The fuse is very important too! item no.9 |
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The finished installation with all the cables and wires tie-wrapped up out of the way, inset photo shows the button used to switch to the third service which would be used for the bale grab or a dung grab. Tiny button from RS Components part number 265-0629 cost about £ 6.00. I also used a 12 volt solenoid between the switch and the hydraulic diverter valve. There were various hydraulic pipes to be made up. I tried to use as much of the existing pipe work as possible.
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