Sickle Bar Running hyd. lines to rear for Sickle Bar cutter

[TerryR]

I am too old for nightmares too, 74, and don't think twice about doing this. Knock on wood.

I agree, and my wife is planning my 80th birthday party.

 

[Boeing]

Gordon, Thank you for taking the time to explain. This has helped immensely. The unit is on order and I'm looking forward to it...:laughing:

 

[CoyPatton]

Gordon, I've read that trying to stand the FEL up, remove the pins and back out from under it THEN......trying to get under to RE-align the attachment is a nightmare. My unit is advertised as "Quick disconnect" but in 11 years I've never attempted it. COWARD but old....and alone...
How does one determine WHICH lines are for TILT and which for RAISE arms on the FEL? I see from your photo that the sickle only needs ONE hyd line? Thought it had to have a pressure and return for EACH action.....bar tilt in this case. Thanks

To ID the ports, chase the hose once chased or more accurately as chasing have on hand several of 4 colors of zip ties. Put a zip tie on each hose where it connects to the cylinder,and anywhere in between that hells you keep track—at joints of metal to rubber hoses and where they connect to the valve. The color zip ties makes future questions much simpler.

 

[CoyPatton]

My sickle bar has a single acting cylinder - that is there is only one hose and port on the cylinder. On the ram end in this case. It requires fluid under pressure to push back or retract the ram which raises the bar towards vertical. When the pressure is released gravity pulls the bar down towards horizontal as the fluid in the cylinder flows in the reverse direction out of the cylinder and back into the tractor tank.

The valves on the rear of the tractor and loader are dual acting - push the lever one way and one side of the port is pressurized and the other side has no pressure and is a return to the tank. So pressurized fluid moves into one end of the cylinder while the fluid in the other end gets pushed out and flows back into the tank as the ram moves. If you have a single acting cylinder with one hose, like on my mower, you can connect that hose to either side of a dual acting port. Push the lever one way and pressurized fluid flows into the cylinder and the ram moves. The other port is connected to the tank but nothing happens because there is no connection on that port. Then push the lever the other way. Now the port with the hose gets connected to the tank and gravity moves the ram which pushes out the fluid and it returns to the tank. But, the other half of the port, w/o a hose connection, gets pressurized. The fluid has no where to go so the pressure builds until the relief valve opens giving the pressurized fluid a return path to the tank. In general it is not good to put a system into pressure relief for long periods of time because it heats the fluid. But for low duty cycle situations like an occasional mower height adjustment there is no danger of over heating the fluid. Hope this helps,

gg

Well that defeats the concept of multi uses of the valve from my understanding.
If trying to use that valve for a grapple for example, you do not want pressure opening the jaws while clamped on to fairly heavy log or whatever. Also would mean not using the loader valve if I understand what you said.

 

[Gordon Gould]

Well that defeats the concept of multi uses of the valve from my understanding.
If trying to use that valve for a grapple for example, you do not want pressure opening the jaws while clamped on to fairly heavy log or whatever. Also would mean not using the loader valve if I understand what you said.

It seems like you did not understand. It was difficult for me to explain - sorry I couldn't do better. It is in fact a normal Double Acting valve used to control double acting cylinders like in a grapple. I was describing what happens if you want to control a single acting cylinder like on my mower with a D/A valve.

gg