Jensen a540 2013 Hydraulic overheat

[thomasvdb7]

Jensen A540 2013 problem can anybody help? The Bucher hydraulic valve block has electromagnetic valves. The one on the right (which activates for infeed) keeps trying to overheat. One has melted and the replacement (£100) is trying to do the same. What would be causing this and how do I fix? Thanks so much for any pointers!

[GarethM]

Did you replace the whole solenoid valve or just the coil ?.

[thomasvdb7]

I only replaced the coil but I took the block apart and checked it was all moving freely. There doesn't seem to be any issues in the working of the valve either on or off the chipper... Thanks for your help!

[GarethM]

If it was me, I've had faulty coils on old tractors I would replace the valve & coil.

 

If it's not moving completely it will get hot and burnout the coil again, the max current draw is during the initial moving the thing, the holding it open uses very little.

 

If it's getting hot it's not moving fully, be that physically or a fault elsewhere on the electrics, but as it's burning out it could be an under voltage when everything else is in use.