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  1. #41
    Gold Member Smalljobs's Avatar
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    Mar 2009
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    327
    Location
    Massachusetts
    Tractor
    Jinma 284

    Default Re: Convert Chinese Backhoe to Prince BH Control Valve Assembly?

    Update:
    I turned the entire valve around and ran into some problems. After I welded the new mounting plate, I could not fit the valve back inside...finally it fit. Now I have about two hours of seat time on it. It's both FAST and PRECISE...Amazing. I'm having a problem with the boom dropping too fast. I think the OEM application for this valve was for a smaller BH despite the fact I've rearranged the orifices in the valve stack. In fact , I'm now thinking about inserting an adjustable restrictor valve in the boom dump cylinder discharge. I need more seat time. The new valve makes it faster and more precise so my plan it get some hours on it first. A new suprise was the boom "float" I'm learning about.

    A big PLUS is the swing: The Chinese valve forced me to bump the stick and hope for the best. Now I can nudge the swing precisely a 1/2" or so with no trouble. The control of this DINOIL valve is great!
    Steve Anderson

    Jinma 284LE w/Creeper/Koyker 160 Loader/Markham Toothbar, Frame mounted HWO4X backhoe, 64" John Deere 3 PH Snow blower,3 PH splitter, Bro-Tek thumb, Jinma 8" chipper, Loader mounted Meyer plow

  2. #42
    New Member
    Join Date
    Jun 2012
    Posts
    10
    Location
    cantonment fl
    Tractor
    Kubota L3300 DT GST

    Default Re: Convert Chinese Backhoe to Prince BH Control Valve Assembly?

    hi Steve my name is William Donahoo I live in Cantonment Florida and i'm interested in your Jinma backhoe control spool valve assembly and hoses I have a FarmPro BKHOE 30 attachment I think it is the same as the Jinma.
    My spool valve assembly is a series of 8 blocks bolted together by 4 - 12mm bolts about 12" long my email is donahooz@aol.com cell# is 850-968-0178 call text or email me and I can send you pics .

  3. #43
    Gold Member Smalljobs's Avatar
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    Mar 2009
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    327
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    Massachusetts
    Tractor
    Jinma 284

    Default Re: Convert Chinese Backhoe to Prince BH Control Valve Assembly?

    Youve got mail
    Steve Anderson

    Jinma 284LE w/Creeper/Koyker 160 Loader/Markham Toothbar, Frame mounted HWO4X backhoe, 64" John Deere 3 PH Snow blower,3 PH splitter, Bro-Tek thumb, Jinma 8" chipper, Loader mounted Meyer plow

  4. #44
    New Member
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    Jun 2012
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    10
    Location
    cantonment fl
    Tractor
    Kubota L3300 DT GST

    Default Re: Convert Chinese Backhoe to Prince BH Control Valve Assembly?

    hi steve when you installed the new valve how did you go from metric fittings on the cylinders to the JIC or NPT fittings on the prince spool valve? I've seen adapters but there $34 a piece times 14

  5. #45
    Gold Member Smalljobs's Avatar
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    Mar 2009
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    327
    Location
    Massachusetts
    Tractor
    Jinma 284

    Default Re: Convert Chinese Backhoe to Prince BH Control Valve Assembly?

    I used screw-on adaptors from Ranch Hand on all but one cylinder. For that one cylinder I'd already changed over the hose by welding on a male JIC as per image below. This was done by removing the China ORFS female end from the Chinese hose and welding it to a male JIC. From there I made up my own hose using common "reusable hose ends".

    Convert Chinese Backhoe to Prince BH Control Valve Assembly?-hose-conversion-jpg
    Steve Anderson

    Jinma 284LE w/Creeper/Koyker 160 Loader/Markham Toothbar, Frame mounted HWO4X backhoe, 64" John Deere 3 PH Snow blower,3 PH splitter, Bro-Tek thumb, Jinma 8" chipper, Loader mounted Meyer plow

  6. #46
    New Member
    Join Date
    Jun 2012
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    10
    Location
    cantonment fl
    Tractor
    Kubota L3300 DT GST

    Default Re: Convert Chinese Backhoe to Prince BH Control Valve Assembly?

    thanks Steve give me a call or text when you get ready to sell thanks Will

  7. #47
    Gold Member Smalljobs's Avatar
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    Mar 2009
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    327
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    Massachusetts
    Tractor
    Jinma 284

    Default Re: Convert Chinese Backhoe to Prince BH Control Valve Assembly?

    Springtime is coming and I'm happy with the new backhoe valve with enough hours before winter. Soon I will make one posting with photos to sell off all the remaining HW04 parts as noted below. I want to sell all the OEM hoses and spares in one lot. The BH control valve together with numerous spare joystick linkage parts will also go as one lot. I prefer local pickup in central Massachusetts as this stuff is oily and not easy to pack. Will post on Craigslist as well.

    The HW04 BH valve worked perfectly with no issues, leaks, etc.

    Contact me privately to anderson@gdsconsulting.com
    Steve Anderson

    Jinma 284LE w/Creeper/Koyker 160 Loader/Markham Toothbar, Frame mounted HWO4X backhoe, 64" John Deere 3 PH Snow blower,3 PH splitter, Bro-Tek thumb, Jinma 8" chipper, Loader mounted Meyer plow

  8. #48
    Super Member dfkrug's Avatar
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    Feb 2004
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    5,728
    Location
    NorCal
    Tractor
    05 Kioti CK30HST w/ Prairie Dog backhoe

    Default Re: Convert Chinese Backhoe to Prince BH Control Valve Assembly?

    Interesting valve substitution, SMALLJOBS. I am glad the Dinoil valve is working well.

    It looks like the new valve does not include any work-port relief valves. Is that also true
    of the Chinese valves?

    Interesting that you go to China a visit the factories before a purchase. I would assume
    those are very large purchases for your company?

    I am using Alibaba for the first time, to import a small Chinese excavator. I really should
    have visited the factory first, as you did, but I can't really justify the cost. I AM getting a
    spare valve stack for my new mini-X, as I don't hear much good about Chinese hydraulics.

    I hope it has work-port RVs, but I am not expecting that.

  9. #49
    Gold Member Smalljobs's Avatar
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    Mar 2009
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    327
    Location
    Massachusetts
    Tractor
    Jinma 284

    Default Re: Convert Chinese Backhoe to Prince BH Control Valve Assembly?

    Quote Originally Posted by dfkrug View Post
    Interesting valve substitution, SMALLJOBS. I am glad the Dinoil valve is working well.

    It looks like the new valve does not include any work-port relief valves. Is that also true
    of the Chinese valves?

    Interesting that you go to China a visit the factories before a purchase. I would assume
    those are very large purchases for your company?

    I am using Alibaba for the first time, to import a small Chinese excavator. I really should
    have visited the factory first, as you did, but I can't really justify the cost. I AM getting a
    spare valve stack for my new mini-X, as I don't hear much good about Chinese hydraulics.

    I hope it has work-port RVs, but I am not expecting that.
    Are you already committed to Alibaba? If not, contact me privately.
    Steve Anderson

    Jinma 284LE w/Creeper/Koyker 160 Loader/Markham Toothbar, Frame mounted HWO4X backhoe, 64" John Deere 3 PH Snow blower,3 PH splitter, Bro-Tek thumb, Jinma 8" chipper, Loader mounted Meyer plow

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