2305 and Independent Lift?

fdmars · May 15, 2011

Can you explain what the regen is and how it operates on a 2305? First I have heard of it. Thanks Fred

North Country · May 15, 2011

It's all here:

http://www.tractorbynet.com/forums/kubota-buying-pricing/9403-3-position-valve-vs-4-a.html

and here:

http://www.tractorbynet.com/forums/...-functions-regenerative-2305-regen-theory.jpg

kennyd · May 15, 2011

fdmars said:
Can you explain what the regen is and how it operates on a 2305? First I have heard of it. Thanks Fred

Regen is a "feature" of most modern FEL (Front End Loader) valves, it's on the Dump (joystick far right) circuit, and is also referred to as "Fast Dump". The reason it is nice to have is that without it, the weight of a filled bucket can actually "pull" the bucket down faster then the fluid can enter the other side of the cylinder, this will create a air pocket and give the bucket a "floppy" feeling until the joystick is held in the dump mode a few seconds to refill the cylinder pushing the air past the seals. So we add "regen" or "regenerative" function to the valve.

Regen solves this problem by actually filling both sides of the cylinder at the same time with hydraulic fluid. But how will that work you might ask? Well, because there is more volume on the side of the cylinder that extends it since the rod is taking up space in the other side, it "overpowers" the rod side and lets the cylinder extend-thereby dumping the bucket. So since now both sides of the cylinder are "pressurized", the air pocket can not develop, eliminating the "floppy" bucket syndrome. One other added bonus is that the bucket actually dumps faster due to the higher flow rate required to do all this, that's why it's referred to as "fast dump" sometimes.

So, now you may be asking "This is cool and all that, but why do I need to know about it??" The answer to that is simple, if you ever try to run a snow plow with two SA (single acting) cylinders, or a cylinder that drives a chute rotator on a snowblower you will soon find out that they won't work if you push the joystick to far right in the regen mode. The plow won't work because since both lines are pressurized-both cylinders will be trying to extend at the same time binding everything up. The rotator won't work because there is no weight pushing the cylinder closed like there is on the loader.

fdmars · May 15, 2011

Thanks for the info KennyD. Helpful as always:thumbsup:

hink10 · May 16, 2011

hink10 said:
Okay, here's a question for anyone that's installed an independent lift on a 2305 that had the mechanical lift already installed. I was told that I needed the ind. lift attaching parts kit in addition to the ind. lift kit. I have the part numbers, but not in front of me at the moment.

It appears that the mechanical lift that's on the tractor has all of the same attaching parts that the "required" attaching parts kit has. I specifically asked the dealer I bought the kit from If I needed the attaching kit if I was getting the tractor with the mechanical lift already installed, he said yes as did the dealer I bought the tractor from.

I think that they may be incorrect. In the John Deere pricing literature, the ind. lift kit states it requires the attaching kit for a field install. My thought is that's assuming there is no lift/attaching parts on the machine? I don't have the tractor yet so I can't say for sure, but did receive both kits and read the install directions for the mech. lift and the ind. lift, they seem to use the same attaching parts. The way Deere lists the parts is a bit confusing so I can see how the mistake could be made. I would think the dealers would know better but then again, I'm dealing with sales people, not service techs.

I remember looking at the tractor and it had all the attaching hardware connected to the 3 pt already, no deck attached. I believe all I need to do is remove the mech. lift parts that connect to the 3pt. hitch, install the hydraulic cylinder and route the hose. looks pretty easy to me. Am I wrong?

Thanks,
Steve

Thanks for all the advise. Here's the update, I sent an email to the dealer last night explaining exactly what I said in this post and asked that he confirm it with his techs. He replied, "everything you said is correct". I asked if they would install the ind lift parts I bought, said they would do it for $75. I said I'd drop off the part. So, it went from $850 to $650 then a $267 kit (Deere Price, I paid less.) and $75 labor. I don't think they were trying to get one over on me, they just don't know their product well enough. I think I've learned more in a couple weeks on the boards then most of the sales people know.

I'm going to contact the dealer that sold me the ind lift kit and the attaching parts and see if they will take a return on the attaching parts. Anyway, I feel better know, it's well worth $75 to have installed, especially if the BH sub-frames has to come off. I hope this may help someone else that is going to convert to the ind lift. :thumbsup:

Steve