PTO electro-hydraulic clutch

GIJOE · Dec 20, 2007

I have the 3510 with the electro-hydraulic clutch. Is there any type of safety device or pressure relief Incorporated into this type of system to minimize the shock load when engaging the PTO. I lower the engine to about 1000-1200 RPM, engage, wait till the implement comes up to speed and then increase the engine speed to achieve the 540 PTO RPM in order to reduce the shock load on the system, but it still seems to be a hard engagement.

Joe

Four20 · Dec 20, 2007

GIJOE, I have a Kioti DK35 that is exactly the same way. I operate it the same way as you. It was definately something I had to get used to, but it works great and I have not had any problems with it or any of my implements. I also would like to hear of any additional input anyone may have.

By the way, I got a chance to drive a Mahindra 3510 recently and it is one very nice tractor.

JC-jetro · Dec 20, 2007

GIJOE said:
I have the 3510 with the electro-hydraulic clutch. Is there any type of safety device or pressure relief Incorporated into this type of system to minimize the shock load when engaging the PTO. I lower the engine to about 1000-1200 RPM, engage, wait till the implement comes up to speed and then increase the engine speed to achieve the 540 PTO RPM in order to reduce the shock load on the system, but it still seems to be a hard engagement.

Joe

You are operating your system correctly. By electric/hydraulic clutch. Hyd flow is turned on/off by action of solenoid valve in hyd circuit to the clutch pack. The solenoid action by nature of design is fast acting and there is some shock loading involved when the flow is either turned off or on. A ****** chamber of sort with an orfice plate can give it a bit delay time but I do not think it is incorporated in the system. You'd like to reduce the shock loading on the pto end also, so if I were to use a tiller I will not get the pto engaged with the tine in good contact with earth. I raise my implement, keep the rpm low, engage the pto clutch with the switch, will let the clutch pack to come to full contact , raise to the required rpm and then lower the implement.

JC,

Four20 · Dec 20, 2007

Great advice JC, that is also how I operate it. Thanks for the explanation on how it operates. I always wondered how this type of PTO engaged and operated.

32Ford · Dec 21, 2007

I have a 30 HP Farmtrac with an electro-hydraulic clutch. I do not know if this would apply to a Mahindra, but this works on my tractor. I was told by the dealer I bought it from that to reduce the shock of the PTO engaging instantly, operate the front end loader in the lift mode then engage the PTO. The hydraulic circuit
prioritizes pressure to the loader circuit and and as such the pressure going to the PTO circuit is reduced, minimizing the shock.