function of spool valve and chains

citytransplant · May 25, 2006

Farmtrac 270DTC "other features" include adjustable stabilizer chains. What are these?

Same question for the optional double-acting spool valve kit. What is a spool valve and when would the double-acting valve be needed?

Thanks in advance.

http://www.farmtrac.com/

citytransplant · May 25, 2006

Farmtrac 270DTC "other features" include adjustable stabilizer chains. What are these?

Same question for the optional double-acting spool valve kit. What is a spool valve and when would the double-acting valve be needed?

Thanks in advance.

http://www.farmtrac.com/

dubba · May 26, 2006

( adjustable stabilizer chains )
These will stabilize the 3 point hitch arms to better control the implement, keep the implement from hitting the tires etc.

( optional double-acting spool valve kit )

A hydraulic control for controlling one double acting hydraulic cylinder. IE angle adjustment on a landscape rake

dubba · May 26, 2006

( adjustable stabilizer chains )
These will stabilize the 3 point hitch arms to better control the implement, keep the implement from hitting the tires etc.

( optional double-acting spool valve kit )

A hydraulic control for controlling one double acting hydraulic cylinder. IE angle adjustment on a landscape rake

john_bud · May 26, 2006

City,

Don't be bashful, everybody wonders those things at some time~ /forums/images/graemlins/grin.gif.

As noted the chains aid in stabilizing the 3pt implement. Sometimes called sway chain. They limit the side to side movement. There is also a chain that can be used to limit the down motion of an implement.

A "spool" is jargon for a hydraulic control, it probably has to do with the configuration of the rod inside that has a machined step in it. When the rod is moved, the step goes either up or down to open a port to allow fluid flow. Moving up makes fluid go one way, moving down the other way. It is probably a control for a rear mounted implement.
(on edit: - I checked the web site, it is for power to the rear of the tractor. Having 1 is useful, having 3 is ideal... If you look over the backhoe page, you can see that they power the hoe using that spool.)

Implements are either ground driven, PTO driven, have a separate engine that provides power or use tractor hydraulic power. Larger tillage equipment uses hydraulic power to actuate cylinders to fold itself up so they fit on the roadway.

Happy farming,
jb

john_bud · May 26, 2006

City,

Don't be bashful, everybody wonders those things at some time~ /forums/images/graemlins/grin.gif.

As noted the chains aid in stabilizing the 3pt implement. Sometimes called sway chain. They limit the side to side movement. There is also a chain that can be used to limit the down motion of an implement.

A "spool" is jargon for a hydraulic control, it probably has to do with the configuration of the rod inside that has a machined step in it. When the rod is moved, the step goes either up or down to open a port to allow fluid flow. Moving up makes fluid go one way, moving down the other way. It is probably a control for a rear mounted implement.
(on edit: - I checked the web site, it is for power to the rear of the tractor. Having 1 is useful, having 3 is ideal... If you look over the backhoe page, you can see that they power the hoe using that spool.)

Implements are either ground driven, PTO driven, have a separate engine that provides power or use tractor hydraulic power. Larger tillage equipment uses hydraulic power to actuate cylinders to fold itself up so they fit on the roadway.

Happy farming,
jb

citytransplant · May 27, 2006

Thanks John and Dubba.

John wrote… the chains aid in stabilizing the 3pt implement. Sometimes called sway chain. They limit the side to side movement.

I do not recall seeing chains at all attached to the 3pt hitch on the new unit sitting in the dealer’s yard. I did notice a spring connecting the two lower arms. Is it safe to assume that the spring serves some purpose other than stabilizing any attached implements and that the “adjustable stabilizer chains” were not on display?

citytransplant · May 27, 2006

Thanks John and Dubba.

John wrote… the chains aid in stabilizing the 3pt implement. Sometimes called sway chain. They limit the side to side movement.

I do not recall seeing chains at all attached to the 3pt hitch on the new unit sitting in the dealer’s yard. I did notice a spring connecting the two lower arms. Is it safe to assume that the spring serves some purpose other than stabilizing any attached implements and that the “adjustable stabilizer chains” were not on display?

dubba · May 27, 2006

I'm guessing there was no implement attached to the 3 pt arms.

The spring is just to keep the arms from swinging out & hitting the tires. Also makes it look good.

The individual sway chains only restrain the implement from swinging toward the other side. The implement provides the "link" tieing both arms together.

Have you seen THE BOOK published by the owner of this fine, free website?? It can be most informative for a first time tractor buyer or just someone with a lot of questions.

Please note, I am not telling you to not ask questions, It is just a good unbiased resource.

dubba · May 27, 2006

I'm guessing there was no implement attached to the 3 pt arms.

The spring is just to keep the arms from swinging out & hitting the tires. Also makes it look good.

The individual sway chains only restrain the implement from swinging toward the other side. The implement provides the "link" tieing both arms together.

Have you seen THE BOOK published by the owner of this fine, free website?? It can be most informative for a first time tractor buyer or just someone with a lot of questions.

Please note, I am not telling you to not ask questions, It is just a good unbiased resource.