I have a few hydraulic questions regarding my 2006 Kioti CK30HST and New Holland 759C backhoe attachment. Additional info on the tractor - it has a Kioti KL130 loader and I have added one Kioti rear remote that was a kit from the dealer. The backhoe is a new addition and I'm in the middle of fabricating a subframe mount system which will either be 3 point if I get tired of working on it or 5 point if I complete the plan. The subframe and rear center subframe mount are New Holland parts that came with the backhoe. We have cut up the center mount and are adapting it to the Kioti drawbar hitch bolt pattern (drawbar hitch removed). The backhoe was new unassembled unit from a salvage yard. It came with the wrong bucket so we had to cut the "ears" off of it and build some new ones. We also made some temporary 3 point hitch brackets just so I could move it around (1468 lbs) and get the hydraulics working. There will be NO digging with the 3 point hitch mount. I have the inlet and outlet lines from the backhoe connected to the rear remote on the tractor and it seems to work fine although I have not actually dug any dirt yet. I have also just acquired a new Hammer HM255 hydraulic breaker and a new Gentec HT824 hydraulic thumb. I would like to get both of these attachments working on the backhoe. The backhoe is literally built like a tank and the breaker is the smallest one that company makes so I don't think it will do too much damage to the BH. The BH is one size too large for the tractor (would be a much better match to a CK35 or 40) but this a stout little tractor. Over the last several years we have had it overloaded more than once and came out fine. I'm breaking out a floor of a building to put in plumbing and also taking out a couple of old barn foundations to make room for a real shop. The rental place is 2 hours round trip and I'm tired of my construction time being eaten up by hauling back and forth.
The only modifications to the Kioti hydraulic system is that I adjusted the loader (main relief) pressure up some. It wouldn't pick things up so I adjusted the pressure until it would. I don't know what the pressure is set to at this point but it will not lift the rear wheels with no rear ballast so I don't think it is excessive. It was not adjusted a lot - I could manually "assist" the loader by hand (assistant pulling the loader joystick) and get it to lift things.
Additional info:
The tractor hydraulic pump is rated at 12.5 gallons per minute.
The tractor hydraulic relief pressure spec is 2560psi.
The hammer PDF manual operating pressure spec is 1029-2058psi. Oil Flow is 5.29GPM - 7.93GPM. Feed line 1/2", Return line 1/2"
The hammer website operating pressure spec is 870-1885psi. Oil flow is 4-6.5GPM. Feed line 0.12/0.31", return line 0.98"
The backhoe operating pressure spec is 2500psi.
The thumb pressure spec is 1800psi max.
The backhoe has a Parker V10-1065-D joystick valve body stack.
PS I don't know why the Hammer website has different specs than the manual that they emailed me. The manual looks old.
Questions:
1. In order to get the subframe to tuck up under the tractor and have a reasonable amount of ground clearance, I need to move the hydraulic filter. Relocating it will get me an additional 3+ inches of ground clearance. Has anyone done this? I'm looking at trans-dapt oil filter relocation kits and as soon as I can get a spare filter and figure out what threads it has, I'll order the correct one. Does anyone know if any "factory" or aftermarket backhoe attachments that come with a filter relocation kit? I am just wondering if I'm venturing into no-man's land with this change. Worst case scenario I may have to modify the steel tubes that go into and out of the filter mount boss (carefully) or cut clearance into the subframe (ouch).
2. I'm trying to plan out the hydraulics to accommodate both the thumb and the hammer. With thousands of thumbs being sold you would think that you could pick up a thumb hydraulic kit at 50 different websites but I have yet to find a single one. It is really even difficult to find anyone that has listed out exactly what the did to make it work or anyone that details a factory thumb kit install. The thumb assembly mounts onto the dipper stick so I plan on leaving it in place while the hammer is installed (plumbing also).
This is what I would like:
A. a button/s on the joystick to actuate the thumb or the hammer. I am not sure that I would like a foot pedal. I would kind of like to make everything hydraulic just so there is no wiring involved but I'm not sure that is an option. I can wire it up no problem it just seems odd to have wires going to your backhoe. Maybe I can add a work light on it and feel better about it lol.
B. I'd rather not take the BH V10 stack apart - it fits in the sheet metal cutouts as-is and it seems like a bad idea to mess with that since is is basically brand new. I'm ok with mounting valves inside or outside the control console or even cutting a new hole for an additional lever/switch/button/whatever.
C. I need to reduce pressure for the thumb/hammer and it looks like 1800psi will work. I'm guessing this pressure relief would also allow the bucket to overpower the thumb so I don't break/blow something.
D. I'm not sure on the line sizes since I would think that the hammer would need a larger return line, so either 3 or 4 lines may need to be run. Obviously the thumb and hammer would not be used at the same time.
E. I would like to do it right and not rig it up. I'd like to just plug the hammer into two quick disconnects when it is being installed and not have to unhook the thumb or mess with anything else - unless it is just switching a switch or lever at the console.
If anyone has any suggestions or experience with this kind of thing I would appreciate it. I would say I'm an advanced/pro level DIY in mechanical and electrical things but my hydraulic experience is limited to messing with the tractor, rebuilding a few automatic transmissions and a power steering pump. I'll try to reply to this with some links to the equipment I listed.
Thanks! Dan
The only modifications to the Kioti hydraulic system is that I adjusted the loader (main relief) pressure up some. It wouldn't pick things up so I adjusted the pressure until it would. I don't know what the pressure is set to at this point but it will not lift the rear wheels with no rear ballast so I don't think it is excessive. It was not adjusted a lot - I could manually "assist" the loader by hand (assistant pulling the loader joystick) and get it to lift things.
Additional info:
The tractor hydraulic pump is rated at 12.5 gallons per minute.
The tractor hydraulic relief pressure spec is 2560psi.
The hammer PDF manual operating pressure spec is 1029-2058psi. Oil Flow is 5.29GPM - 7.93GPM. Feed line 1/2", Return line 1/2"
The hammer website operating pressure spec is 870-1885psi. Oil flow is 4-6.5GPM. Feed line 0.12/0.31", return line 0.98"
The backhoe operating pressure spec is 2500psi.
The thumb pressure spec is 1800psi max.
The backhoe has a Parker V10-1065-D joystick valve body stack.
PS I don't know why the Hammer website has different specs than the manual that they emailed me. The manual looks old.
Questions:
1. In order to get the subframe to tuck up under the tractor and have a reasonable amount of ground clearance, I need to move the hydraulic filter. Relocating it will get me an additional 3+ inches of ground clearance. Has anyone done this? I'm looking at trans-dapt oil filter relocation kits and as soon as I can get a spare filter and figure out what threads it has, I'll order the correct one. Does anyone know if any "factory" or aftermarket backhoe attachments that come with a filter relocation kit? I am just wondering if I'm venturing into no-man's land with this change. Worst case scenario I may have to modify the steel tubes that go into and out of the filter mount boss (carefully) or cut clearance into the subframe (ouch).
2. I'm trying to plan out the hydraulics to accommodate both the thumb and the hammer. With thousands of thumbs being sold you would think that you could pick up a thumb hydraulic kit at 50 different websites but I have yet to find a single one. It is really even difficult to find anyone that has listed out exactly what the did to make it work or anyone that details a factory thumb kit install. The thumb assembly mounts onto the dipper stick so I plan on leaving it in place while the hammer is installed (plumbing also).
This is what I would like:
A. a button/s on the joystick to actuate the thumb or the hammer. I am not sure that I would like a foot pedal. I would kind of like to make everything hydraulic just so there is no wiring involved but I'm not sure that is an option. I can wire it up no problem it just seems odd to have wires going to your backhoe. Maybe I can add a work light on it and feel better about it lol.
B. I'd rather not take the BH V10 stack apart - it fits in the sheet metal cutouts as-is and it seems like a bad idea to mess with that since is is basically brand new. I'm ok with mounting valves inside or outside the control console or even cutting a new hole for an additional lever/switch/button/whatever.
C. I need to reduce pressure for the thumb/hammer and it looks like 1800psi will work. I'm guessing this pressure relief would also allow the bucket to overpower the thumb so I don't break/blow something.
D. I'm not sure on the line sizes since I would think that the hammer would need a larger return line, so either 3 or 4 lines may need to be run. Obviously the thumb and hammer would not be used at the same time.
E. I would like to do it right and not rig it up. I'd like to just plug the hammer into two quick disconnects when it is being installed and not have to unhook the thumb or mess with anything else - unless it is just switching a switch or lever at the console.
If anyone has any suggestions or experience with this kind of thing I would appreciate it. I would say I'm an advanced/pro level DIY in mechanical and electrical things but my hydraulic experience is limited to messing with the tractor, rebuilding a few automatic transmissions and a power steering pump. I'll try to reply to this with some links to the equipment I listed.
Thanks! Dan
