Two loader functions

   / Two loader functions #11  
So if it operates slower with the series/parallel valve would the next mod be to replace the pump with a higher volume one?

My Kioti LK 2554 originally cam with a 8 GPM pump and it was slow and getting weak so I replaced it with a 10 GPM one that was an upgrade for the LK3054. I just had to change the studs to bolts and it fit perfectly. Easy in this case.

I replaced the valve with a 3 spool to add a grapple. It took a while to source the valve I wanted and wound up with 2 because I did not like the first replacement for the loader. I design flaw in the valve body caused lowering the boom to be uncontrollable. Both of these valves were the parallel/series type valves that allowed two functions at same time. In fact I have done all three functions at the same time but with no weight.

Your Branson has a 13 GPM pump so it would perform better on the Branson. I do use multiple functions for certain situations but normally I find it faster just to do one at a time.
 
   / Two loader functions #12  
My Kioti LK 2554 originally cam with a 8 GPM pump and it was slow and getting weak so I replaced it with a 10 GPM one that was an upgrade for the LK3054. I just had to change the studs to bolts and it fit perfectly. Easy in this case.

I replaced the valve with a 3 spool to add a grapple. It took a while to source the valve I wanted and wound up with 2 because I did not like the first replacement for the loader. I design flaw in the valve body caused lowering the boom to be uncontrollable. Both of these valves were the parallel/series type valves that allowed two functions at same time. In fact I have done all three functions at the same time but with no weight.

Your Branson has a 13 GPM pump so it would perform better on the Branson. I do use multiple functions for certain situations but normally I find it faster just to do one at a time.

Thanks K5. So in your estimation (and I won't hold you to it) I could change the valves but keep the existing pump?
 
   / Two loader functions #13  
Thanks K5. So in your estimation (and I won't hold you to it) I could change the valves but keep the existing pump?

It certainly will make a difference. If you have room, getting stacked valves gives you more options than the monoblock valve. For example, you can get load checks on each spool which I believe would be beneficial if you are doing heavy lifting with pallet forks. My valves only have one check valve. Works ok but have had situations where the load would drop a bit before lifting.

Whatever you get, don't buy a Youli valve. Not impressed with there quality. Walvoil valves are very good quality. Made in Italy.
 
   / Two loader functions #14  
It certainly will make a difference. If you have room, getting stacked valves gives you more options than the monoblock valve. For example, you can get load checks on each spool which I believe would be beneficial if you are doing heavy lifting with pallet forks. My valves only have one check valve. Works ok but have had situations where the load would drop a bit before lifting.

Whatever you get, don't buy a Youli valve. Not impressed with there quality. Walvoil valves are very good quality. Made in Italy.

The used valve I have for my homemade loader was from a backhoe loader, either a Case or a CAT. It does have all those features like load check valves, Float with anti cavitation valve, work port relief valves on one circuit and more stuff. I do believe it also have a parallel/series combination but I had to swap the sections around to be able to build a joystick, so I think I might have lost that feature. I always wonder if I had leave it the way I got it, how the loader would behave, specially with two functions.

I've never learned about those parallel/series/tandem combinations and probably should. I just saw it on the literature from my valve and looked a bit complex at first glance. It's made by Rexroth.

Either way, I can do both functions at the same time, it's just a bit hard to find the sweet spot because my joystick is not quite perfect. Also I went a bit overboard on the size of the cylinders and it's a bit too slow with two functions.

Also, Bob's tractor also have the 8.9 GPM main pump with 13cc. Same as the 15 series and some of the 20 series. The 25 series seems to use a 16 cc pump which would put out 11 GPM and the bigger models of the 20 series uses a 15 cc pump with 10.3GPM. I suppose one could get the bigger 16 cc pump.

EDIT: I'm using Branson website as reference for the size of pumps and we all know that the info is not always right there.
 
   / Two loader functions #15  
I tried this again today when I was putting the tractor away. (nothing in the bucket, about 1500 rpm). I can do it sometimes but the sweet spot is very narrow.

This makes me wonder if I could tune up the cable system with lube or adjustment to make it work better.
 
   / Two loader functions #16  
Never messed with a cable setup before. Is there any adjustments on those?
 
   / Two loader functions #17  
The used valve I have for my homemade loader was from a backhoe loader, either a Case or a CAT. It does have all those features like load check valves, Float with anti cavitation valve, work port relief valves on one circuit and more stuff. I do believe it also have a parallel/series combination but I had to swap the sections around to be able to build a joystick, so I think I might have lost that feature. I always wonder if I had leave it the way I got it, how the loader would behave, specially with two functions.

I've never learned about those parallel/series/tandem combinations and probably should. I just saw it on the literature from my valve and looked a bit complex at first glance. It's made by Rexroth.

Either way, I can do both functions at the same time, it's just a bit hard to find the sweet spot because my joystick is not quite perfect. Also I went a bit overboard on the size of the cylinders and it's a bit too slow with two functions.

Also, Bob's tractor also have the 8.9 GPM main pump with 13cc. Same as the 15 series and some of the 20 series. The 25 series seems to use a 16 cc pump which would put out 11 GPM and the bigger models of the 20 series uses a 15 cc pump with 10.3GPM. I suppose one could get the bigger 16 cc pump.

EDIT: I'm using Branson website as reference for the size of pumps and we all know that the info is not always right there.

I understand Bobs primary is 8.9 but I referenced ball park total because on my Kioti it was 8GPM with a priority valve for power steering. It robs a good bit of flow from my loader. That said, I do think he would see an improvement from a better quality valve.
 
   / Two loader functions #18  
Never messed with a cable setup before. Is there any adjustments on those?

There's likely to be cable tension adjusters but probably not anything else. The loader valve and cables are not in any of my manuals. I'll have to take it apart and see what's in there.
 
   / Two loader functions #19  
Good conversation. Thanks you guys.

I'll probably live with the stock hydraulics as having two functions simultaneously working will likely not be worth the money it would cost me. If I have the time I might get a quote for it though.
 

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