Can I use this top link?

[dynasim]

CCM had a good point on the website about those cylinders, which is one must be careful not to put to large of one on there, as you could risk overloading your tractor.

It doesn't take much of a cylinder to lift way beyond the tractors stated capacity.

Chris

 

[IslandTractor]

CCM had a good point on the website about those cylinders, which is one must be careful not to put to large of one on there, as you could risk overloading your tractor.

It doesn't take much of a cylinder to lift way beyond the tractors stated capacity.

Chris

But you'd need to hook your 3PT up to something that exceeded your tractors rated lift.

 

[dynasim]

I regularly try to lift things with my tractor that the hydraulics tells me I shouldn't. The size of the hydraulic cylinders on both the FEL and the TPH is a break prevention mechanism.

It is just something to think about.

Chris

 

[kennyd]

The size of the hydraulic cylinders on both the FEL and the TPH is a break prevention mechanism.

I disagree with that 100%...if it was true-there would be broken cylinders everyday by every operator!

The system relief valve is the "break prevention mechanism"

 

[radman1]

I disagree with that 100%...if it was true-there would be broken cylinders everyday by every operator!

The system relief valve is the "break prevention mechanism"

I sort of agree with you. The hydraulic 3rd link can develop a great force as the cylinder gets larger despite the system having a relief valve. However, the lifting force of the 3 pt is really the limiting factor that prevents overstressing of the attachment or 3rd link.

 

[dynasim]

kennyd

Just trying to help. You are absolutely right. The pressure relief mechanism, which controls the pressure sent to appropriately sized cylinders, provides substantial but not perfect protection against overloading the tractor.

Sorry for the imprecise grammar

radman1

It is my understanding, though I don't know for sure, that the relief valve won't help if you lift with the top link cylinder, as the relief valve is before the tph lift valve. Again, I may be mistaken, and I was just trying to pass on what I read.

Chris

 

[radman1]

dynasim

A larger top link cylinder can make your 3 pt lift more than it should. I have a 3" Gannon top link cylinder. I placed my 300 water tank on a carry all. I wanted to water some trees and the carryall is what I had at the time. My Kubota 3710 with FEL could not lift it. However, I could extend the top link cylinder, raise the front of the carry all up with the 3 pt. I could raise it about 1.5 ft. Then I could retract the top link cylinder and raise the entire carryall and tank. The pull of that cylinder was probably between 14,000-15,000 lbs (3" bore, 1.25" rod at 2500 psi). Well beyond what was necessary to make the lift. It probably could have lifted more than 500 gallons of water. As it was, the front of the tractor with FEL was still quite light.

The entire hydraulic system is basically under the same relief valve for the FEL, rear lift, rear hydraulics ect. (some exceptions depending on hydraulic valve which could have lower relief than the tractor)

 

[Gittyup]

That toplink is 3.5" diameter. But, I have no plans to try and lift too much with it. If the lower arms can't lift it first, then I won't try using the top link to help. A man has to know his own limitations and those of his equipment, or both will get sick.