kubota back hoe issues

[peavey]

I am a new member, however I have reviewed post on this forum many times when searching for information. You guy,s and Gals know your business and have helped me several times from previous post. I have recently purchased a used kubota back hoe attachment (BT 750) and I am trying to get it to operate from a 11 gpm 2500psi hydraulic pump. Not sure what went wrong, but I blew one of the hydraulic sections on the main valve chest apart. Any help would be great.

 

[Muhammad]

Welcome to TBN.

 

[peavey]

Thanks, This is a great source of information for us not so handy folks. Hope I will be able to contribute from my limited experience of mechanic skills and fabricating.

 

[Briana03]

Hello & WELCOME to TBN!

I moved your thread to the Hydraulics Forum.

 

[peavey]

Thanks Bri, really new to this stuff.

 

[wdchyd]

Peavey, Welcome to TBN.....

Wow, blown apart..?? ....That's a serious issue.....

Maybe the in/out ports are reversed......is there anything downstream plumbed into this circuit (ie: 3ph, other control valves)....

We may need some pics and a brief description of the existing plumbing already on the tractor......

 

[Egon]

Welcome!:thumbsup:

Best be looking for an instruction manual.

 

[J_J]

What was connected to the valve section that cracked opened. Input, output,which cyl, etc.

Did you change any hoses on the valve?

Were you using QD's to connect the BH?

 

[peavey]

Nothing downstream, just a regular kubota backhoe hydraulic valve consisting of 6 sections. I am trying to get it to be powered with a 13hp gas engine and a 11 gpm hydralic valve (log splitter type). I don't think my old Gravely 9000 can handle working the hydraulics, so I thought an external power source would be needed. A poor mans version of a back hoe.

 

[peavey]

I was using quick couplings to connect to the valve. when I first started it up the hydraulics did not function right, so in all my wisdom I held down the right stabilizer jack handle and bang, sounded like a really loud pop, and cool little spray of hyd. oil shout out between the first and second section. Took the valve off and found a seriously damaged valve, metal busted on the back side.Kubota wants about $500.00 just for the parts.