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  1. #1
    Bronze Member
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    Jan 2008
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    87
    Location
    wellington ohio
    Tractor
    7510 bota...RTV 900

    Default CDP MID600 "backhoe build" project

    Getting back on my "backhoe build" project that started in Feb. 2004 for a BX Bota, now it's going on a B7510...think it's about time to get'erdone! looking through all my notes and instructions got a few questions.

    being new to all this stuff...and spent way too many hours on this site lurking at hoe threads...3pt attachment issues...sub-frame builds. So, building a sub-frame for my 3pt designed hoe, finally got the design that I think will work with the metal i got in my shop.

    #1. it states to use JIC#6 hoses, now looking at Surplus Center they have two hose sizes, 1/4 or 3/8 dia. I'm thinking with the 2" cylinders and a 5 GPM pump the 1/4" should be fine. my thinking correct?

    #2. never used a backhoe before...So, what would be the best/most used pattern for controls to learn on....ISO or SAE or other?

    Great Site!

    Last edited by Dongerosa; 12-30-2012 at 10:45 AM.

  2. #2
    Gold Member
    Join Date
    Nov 2011
    Posts
    277
    Location
    Canton, TX
    Tractor
    JD 301A and yanmar YM2500

    Default

    3/8 would be better. My yanmar uses 3/8 on almost everything. The 1/4 is very small for the flow.

  3. #3
    Bronze Member
    Join Date
    Jan 2008
    Posts
    87
    Location
    wellington ohio
    Tractor
    7510 bota...RTV 900

    Default Re: CDP MID600 "backhoe build" project

    3/8 it will be!

    now ISO or SAE control for the two lever valve...pictures attached!
    Attachment 295464
    Attachment 295465

  4. #4
    Silver Member
    Join Date
    Dec 2012
    Posts
    121
    Location
    Canada, Quebec
    Tractor
    Kioti DK45SE with Cab

    Default Re: CDP MID600 "backhoe build" project

    invalid attachment

  5. #5
    Bronze Member
    Join Date
    Jan 2008
    Posts
    87
    Location
    wellington ohio
    Tractor
    7510 bota...RTV 900

    Default Re: CDP MID600 "backhoe build" project

    Quote Originally Posted by Jose G View Post
    invalid attachment
    lets try this....ISO pattern.... http://www.google.com/imgres?hl=en&s...9,r:0,s:0,i:85

    SAE pattern..... http://www.google.com/imgres?um=1&hl...85&tx=87&ty=58

  6. #6
    Bronze Member
    Join Date
    Jan 2008
    Posts
    87
    Location
    wellington ohio
    Tractor
    7510 bota...RTV 900

    Default Re: CDP MID600 "backhoe build" project

    An project up date...got the sub frame done...a few, self created, issues with the front mounting, but is done now! bolts on the the front two 5/8 dia. on each side...the rear has 1 inch stubs that fit into axle brkts.
    -20130118152050-subframe-2-jpg

    next step...weld hoe base to the sub-frame.

    Pic of all the parts....
    -20130121165629-all-parts-floor-jpg

  7. #7
    Platinum Member
    Join Date
    Sep 2012
    Posts
    990
    Location
    Ottawa Ontario
    Tractor
    Kubota B3300SU

    Default Re: CDP MID600 "backhoe build" project

    My BH77 on my B3300SU uses ISO pattern (along with every other backhoe/excavator I've run). It also uses 3/8 lines as the main pressure and return to the BH valve with 1/4" lines to the cylinders.

  8. #8
    Bronze Member
    Join Date
    Jan 2008
    Posts
    87
    Location
    wellington ohio
    Tractor
    7510 bota...RTV 900

    Default Re: CDP MID600 "backhoe build" project

    Quote Originally Posted by CDN Farm Boy View Post
    My BH77 on my B3300SU uses ISO pattern (along with every other backhoe/excavator I've run). It also uses 3/8 lines as the main pressure and return to the BH valve with 1/4" lines to the cylinders.
    Thks for the ISO and line size feedback.

    made a little more progress in the garage...

    -20130125163351-bucket-dipper-arm-jpg

  9. #9
    Bronze Member
    Join Date
    Jan 2008
    Posts
    87
    Location
    wellington ohio
    Tractor
    7510 bota...RTV 900

    Default Re: CDP MID600 "backhoe build" project

    a few more pictures...

    arm mock-up

    -20130126173546-hoe-arm-mockup-jpg

    stabilizers with center section...

    -20130126120022-stabilizer-arm-center-jpg

    starting to look like a backhoe....

  10. #10
    Silver Member
    Join Date
    Sep 2011
    Posts
    132
    Location
    near Johnstown PA
    Tractor
    Allmand TLB 425

    Default Re: CDP MID600 "backhoe build" project

    Looks great ! I like that the pieces have the modern style as see on a commercial backhoe unit.

    You mention CDP so I assume either the pivot weldments were bought from them or cut to their template, I just find it odd that the ends of the pivot weldments are straight were the get welded to the tubes. I was always taught that you should never weld straight across a boom or arm on ground engaging equipment, commercial machines like Case or Deere go to extremes to eliminate straight welds on their hoes and front loader arms. I realize this is a much lower stress application , it's just that CDP seems to have done a good deal of engineering on this and I'm surprised they left it out.

    Picture for clarity of what I'm talking about: -hoe-arm-mockup-jpg


    Ray

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