Hey Kubota Fans,
I hope somebody out there can answer a curious issue I’ve seen on my tractor, and reproduced on a half dozen other others:
My tractor: '07 L3540 with LA724 Loader
I leave my loader off most of the time for farm work, and have several implements that use hydraulic pressure, so I bought the fittings and hook them up directly to my loader connections, and run them with the loader control.
Everything has always worked perfectly on the “lift” circuit, but if I hook something up to the “dump” circuit, the cylinder goes one only way (pressure goes to the blue connector). Pushing the loader control right and left put pressure to the blue connector – so the implement turns one direction, but won’t go back. I have to shut off the tractor to relieve the pressure.
As an experiment, I hooked up the loader connections cross-ways – lift cylinders (white/yellow female fittings) hooked to dump circuit (red/blue male fittings) and it ran the loader the same way – it would only go up. I had to shut off the tractor to bring it down.
I’ve tried this on several friend’s tractors too. L series, B series, MX series… same result. Any idea why this is? I want to get a flail mower I’d like to run with both hydraulic circuits, and wonder if there’s a valve or backpressure something I could add to make it work it work right. Any ideas?
tl;dr When anything but dump cylinders are hooked to the loader dump circuit, the circuit will only push fluid in one direction. Why? How to fix it?
I hope somebody out there can answer a curious issue I’ve seen on my tractor, and reproduced on a half dozen other others:
My tractor: '07 L3540 with LA724 Loader
I leave my loader off most of the time for farm work, and have several implements that use hydraulic pressure, so I bought the fittings and hook them up directly to my loader connections, and run them with the loader control.
Everything has always worked perfectly on the “lift” circuit, but if I hook something up to the “dump” circuit, the cylinder goes one only way (pressure goes to the blue connector). Pushing the loader control right and left put pressure to the blue connector – so the implement turns one direction, but won’t go back. I have to shut off the tractor to relieve the pressure.
As an experiment, I hooked up the loader connections cross-ways – lift cylinders (white/yellow female fittings) hooked to dump circuit (red/blue male fittings) and it ran the loader the same way – it would only go up. I had to shut off the tractor to bring it down.
I’ve tried this on several friend’s tractors too. L series, B series, MX series… same result. Any idea why this is? I want to get a flail mower I’d like to run with both hydraulic circuits, and wonder if there’s a valve or backpressure something I could add to make it work it work right. Any ideas?
tl;dr When anything but dump cylinders are hooked to the loader dump circuit, the circuit will only push fluid in one direction. Why? How to fix it?
