Ordered a new LW6 backhoe for my Kioti LK3054 tractor(in crate) should be here next week,Heard a few negative comments about theses china made BHs,but the big difference in the price i took a chance on it. 3900.00 delivered compared to 8-12,000
for a Kioti or Kubota.
Would sure appreciate anyone out there who can give me a few tips on the best way to set it up on my Kioti..It,s a 3 pt. hitch install and they tell me the pump hooks up directly to the PTO with no PTO shaft
For an old guy with very little experience,i'm going to need all the help i can get!
Looking forward hearing from you...
Is there a dealer in your area that can install a "Power beyond" kit so that you can tap into your tractors hydraulic system?
__________________ Oh Beautiful for smoggy skies, insecticided grain,
For strip-mined mountain's majesty above the asphalt plain.
America, America, man sheds his waste on thee,
And hides the pines with billboard signs, from sea to oily sea***** The best customer of American industry is a well paid worker **** Don't believe everything you think.
Hi Ben, The pumps that I have seen just slide over your PTO shaft and is held in place with a chain or bracket. The hydraulic tank is built in the BH so you just have two hoses running to the pump. I am thinking yours will be the same. Hope your backhoe comes with a safety bar to stop the BH from folding in on the operator. May be you could get a sub frame made up for your unit, much stronger then the 3pt. setup.
There are several good tractor international forums, even if I rather would like to use the Swedish language.
However, I'm curious to hear about your progress, and maybe share some experiences.
I can tell we ordered a LW-7 backhoe last year, and got more then one hundred digging hours with it. Not without problems, but certainly still worth the money.
The first lesson we made, was that the PTO gearbox is the worst part of the whole system. It caused the first hydraulic pump CBN-E310 to leak through the gearbox, and we started thinking of using the tractors hydraulic system to power the backhoe instead. But we didn't like the idea of breaking the tractor hydraulics as well, so we decided to keep the two systems independently.
Luckily, we had a Jinma LW-6 user in a nearby village, that loaned us through the summer his CBN-E310 pump. We still used our own old gearbox attached to the PTO, but here comes the trick! Don't fill the PTO attached gearbox with oil, rather with grease! I attached a M10x1mm zerk and pumped (ca 40 times) in grease. It worked very well after that fix, and should so have been, if it wasn't for we replaced the weaker CBN-E310 pump with a more powerful Parker CBT-E316FBR2. With the cold weather during autumn, the new Parker pump required more power from the gearbox, which broke the connecting teeth/slot of the gearbox.
Also, I now understand the LW-6/LW-7 are both designed with the hoses not suited to a more powerful pump than the CBN-E310. The reasons are you get a too high flow in the hoses, the oiltank is to small, cavitation problems and oil will be heated up. I realized that too late, since the CBN-E310 pump delivers 20 liter/minute, the CBT-E316FBR2 32 liter/minute, and our new Prince HC-PTO-7A 27 liter/minute.
With the new Prince pump, not only with the problems of attaching it to the Chinese fittings, I also needed to increase the size of the suction line hose, pressure hose to the valve block, as well as the return hoses.
My recommendations therefore are to stay with the CBN-E310 pump, but use GREASE in the gearbox. Also to use a correct viscosity of hydraulic oil. Since we don't dig in the winter, I don't think the ISO VG 32 is suitable for us, especially if using a more powerful pump than the original CBN-E310. Even with the STOU oil in the reservoar last year, the CBT-E316FBR2 pump made it very hot, ISO VG32 would have made it even worse. This year with the Prince pump, we are changing from STOU oil to dedicated hydraulic oil for the backhoe, to ISO VG 46.
Some more details of our experiences with our LW-7 backhoe can be found in the references below.
Thanks traktorz,for the PM and all info in your blog. Wish my LW6 had to come with the extra support for the backhoe,it's a must for the 3 point hitch setup.
Hope to buy or have one made up.
I'll try to post a pic,
Here's a drawing from the backhoes manual, illustrating how these additional supporting devices are connected. Please note we had to purchase an extra shorter toplink, for connecting between the stabilizer and the tractors drawbar.
Don't want the BH to fall in on me!
If i ever get it working,still waiting on seal for CBN pump also ordered Prince pump.
Those extra stabilizer subframe items at least gives us a bit confidence that we have a robust and rather rigid setup, and from our experience with more than 100 hours digging time last year, it did actually work well.
Several times in difficult terrains, we had to use both the front loader bucket and the backhoes both stabilizer legs to pull the tractor out of problematic areas. The backhoe seemed quite well integrated with the tractor.
Regarding your backhoe, it should be a rather easy task to mount it to the tractor (using just the three-point initially) and perform a test run, once you got the pump refurbished.
Both a Chinese backhoe and a hydraulic pump is not high tech items, rather it's commodity implements.
However, with the Prince pump you'll get rid of the Chinese made gearbox, which is the main advantage of using the Prince pump. A CBN-E314 would match the Prince pump in capacity as well. Remember to increase the hose size for the suction line with the move from the CBN-E310 pump.
Once you get all items in place, I would recommend to check and in case of modifying the joystick operations, so that it complies with today's western standards used by CAT, TEREX mini excavators, ...
I've written about that in another thread, se ref.
Just saw in another forum thread that you've received a new Prince HC-PTO-7A pump, and your question regarding suitable hoses.
It should be rather easy together with your favorite hydraulic shop to make a new suction line hose from the tank reservoar to the pump, 3/4" size should do. A bit more work is needed for the pressure side of the pump to the valve block, if deciding to make a new hose.
To sum it up, here's a schematic of the original and the modified hydraulics we made for our LW-7 backhoe.
What difference will it make if i use same hoses and just change the fittings and hose ends going to the Prince pump?
Read most post on this subject and it do get confusing especially changing from the cbn pump to Prince!
You cannot revert to the CBN pump, if cutting and mount new press fittings on the old hoses. Beware of the Chinese metric face mount press fittings that are not available outside of China, however your distributor could sell you the spare part hoses of course.
But since you are going to use the Prince pump and never going back to the CBN-E310 pump, so you could use the original hoses with new fittings. But I would recommend at lest make a new suction line hose, in order not to starve the more powerful Prince pump. Remember the recommendation from Prince in their manual to use a rather thick suction line hose.
Your nearest friendly hydraulic shop should be able to help you out.
The hydraulic shop cut hose ends,crimped 2 elbow fittings . replaced 2 fittings that came with the pump
1 JIC swivel 90 1/2x 1/2 0ther 3/4-90 ...........2 fittings for the pump and 2 elbows..
Seems to work ok..sure beats the cbn 310..have to fix up that chain..bit sloppy!!
Used same hose that came with the LW6 BH..........