Almost there with grapple hydraulics...?

[cycle_gator]

Don't we all

 

[stormpetrel]

Alright, I'm back. I didn't say Koyker didn't have/wouldn't sell me a power beyond sleeve....they did, it's on the way. What threw me for a loop is being told I shouldn't "T" into the return line by the guy at Koyker when I told him what I wanted to do.

JJ, your diagram and your words make a lot of sense. I'm just gonna go with that. I am interested in knowing whether I'll lose the 3pt hitch when I use the grapple, though. (not that it matters, this is the way I'm going)

SO....I'l be running a high pressure line from the power beyond sleeve on the loader valve, to the in port on the grapple valve. The return line from the grapple valve gets Teed with the other return line. Aside from the working lines, fittings, etc., that's the main part of the work.

Is there anything I'm missing/forgetting?

 

[J_J]

No, that should work if you follow the diagram. As far as losing the 3pt, If the FEL valve uses all the fluid produced, then the 3pt won't work. If you use only half or the fluid for the FEL cyl, then the rest is available for the 3pt.

 

[stormpetrel]

No, that should work if you follow the diagram. As far as losing the 3pt, If the FEL valve uses all the fluid produced, then the 3pt won't work. If you use only half or the fluid for the FEL cyl, then the rest is available for the 3pt.

Will using the grapple divert power from the loader in terms of lifting power?

 

[cycle_gator]

Stormpetrel:

Nope, other way around. The loader gets the juice first, the grapple gets what is left over after the loader takes its share. Unless there is an undue restriction placed down flow from the loader valve, like a smaller line, or a flow restictor, it will have no effect.

 

[J_J]

They willl both have the same pressure which develops force. If you operate both at the same time, and only use half lever on each, The work speed will decrease. Lift cylinders alone will be normal speed, using all the GPM's from the pump. Grapple only will work normal speed.

 

[stormpetrel]

Got the valve, hoses, and fittings today. The valve (surplus center 9-6701) seems awfully heavy. It's rated for 30GPM. Is it too big? I ordered hoses sized to the ports....pretty darn big also. 3/8" for working lines and 3/4" for in/out. I suppose it's easy enough to change 'em if necessary. I was thinking I'd keep the 3/8" and downsize the 3/4" to 1/2". Thoughts?

 

[J_J]

Why such a large valve? 30 GPM, and 3/4 ports. More than what you need. Weighs about 16 lbs

I have a feeling your grapple is going to be way fast. You will need to tune it down.

Does your loader valve have PB? If not, the new valve should be the first valve in series, as it has the capability for PB.

 

[stormpetrel]

Why such a large valve? 30 GPM, and 3/4 ports. More than what you need. Weighs about 16 lbs

I have a feeling your grapple is going to be way fast. You will need to tune it down.

The grapple came with flow reducers.....whatever they're called, to slow it down. There's a shop near me that can make hoses up; I'll have em send me 1/2" & get rid of the 3/4. I also see I'll need a couple more 90 degree fittings to streamline the look. This was all conceptual 'til I saw the parts....now I'm starting to understand what I'm dealing with.

I don't understand why they sold me such a big valve when I told them the use, and low gpm output of the tractor hydraulic pump.

 

[stormpetrel]

Why such a large valve? 30 GPM, and 3/4 ports. More than what you need. Weighs about 16 lbs

I have a feeling your grapple is going to be way fast. You will need to tune it down.

Does your loader valve have PB? If not, the new valve should be the first valve in series, as it has the capability for PB.

Yes, PB sleeve ordered for loader valve....