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Thread: Kobelco hydraulic excavators

  1. #46
    Resigned
    Join Date
    Jul 2008
    Location
    CANADA
    Posts
    433
    hi Al Q,
    before you follow below
    wd40 the ball joints. lubricant spray stinger under the boots of each ball joint and soak.

    if it ends up, i'm sure it will, and you must run the machine, with the power off, remove the linkage off the stepper motor and fuel inj pump at the ball joints where they bolt. do not adj the rod length.
    the throttle can then be controlled manually. do not rev to the high stop. your display will read the rpm, do not over rev.
    i doubt its the stepper motor.
    i can send you the a adj procedure.
    if they goofed, they should correct and make the adj proper.

  2. #47
    Junior Member
    Join Date
    Dec 2008
    Location
    Arkansas
    Posts
    3
    Quote Originally Posted by MR. KOBELCO View Post
    hi Sam (K909),

    the KOBELCO online parts catalog for your machine shows your hyd pump assy part number to be a 2437U206F1, this supercedes to a new part number 2437U206F3.
    Thanks for your help...

    Now... for a really tough question ( I may be way over my head)

    This is a farm machine and I know very little about heavy equipment and hydraulics. I have however removed the entire pump before and replaced a coupler, put a thumb on and replaced the hydraulic tubes/lines on the boom/stick/bucket...I can replace "parts" I just don't know how they actually all "work".

    Currently none of the electronics work. This means that we have no high, low transport speed and that the breakout button on the right stick does not work. RPM's do not increase/decrease as machine works etc. (I don't understand how people can be so rough on equipment, but you can lift the entire instrument panel out of the console and nothing is still connected.)

    Anyway, to my question... Would there be any possible way to wire up a separate high/medium/low switch and breakout force button from scratch? If this can be done I'm certain that I can do it with a description of how it works and what parts are necessary.

    Thanks in advance...

  3. #48
    Junior Member
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    Dec 2010
    Location
    B.C. Canada
    Posts
    5
    Having the "A" adjustment procedure would be very handy. Should the linkage be a certain length, perhaps a min and max? Does the computer usually fail shortly after there is a stepper motor failure?

  4. #49
    Junior Member
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    Dec 2010
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    B.C. Canada
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    5
    I think all Kobelco owners should have the A procedure for their particular model as it is sort of a maintainance item

  5. #50
    Resigned
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    Jul 2008
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    CANADA
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    433
    hey Al Q,
    ask and you shall receive.
    an e-mail is coming your way.
    deal is you'll require my help thru this.
    cheers!

  6. #51
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    Jul 2008
    Location
    CANADA
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    433
    hi hitachi daft,
    regarding your 80msr,
    please e-mail me a digital picture of your machine cab side shot, of inside your cab, switches, consoles, monitor display, and your engine and its throttle control / speed governor
    with this i should be able to figure out
    cheers!

  7. #52
    Junior Member
    Join Date
    Jul 2010
    Location
    scotland
    Posts
    26
    hi mr kobelco got some info from dealership on what to do will try that first and let you know if it worked thanks for getting back to me

  8. #53
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    Jul 2008
    Location
    CANADA
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    433
    hi K909,
    the eng rpm auto-decel is not that important. to make it proper it will cost you quite a bit. you can control the engine rpm manually. your throttle is cable control anyways.
    you are better off putting the money into ensuring that the mechatro-controller is fully operating as it should. make sure that all the harnesses are connected.
    there will be one that is not.
    this computer is the box fixed to the end of the right hand console.
    its' function is horse power control.
    it reads the eng rpm sensor, the throttle potentiometer on the side of the fuel injection pump and based upon the readings will send a mA current to the solenoid on your pump to destroke the swash of the pumps as to remove the load off the engine so not to stall it out. you do not want the hyd pump to run at full stroke under load or it will cause too much force on the pumps rotating groups squashing the piston shoes.
    these electronics of the machine must be operational or you will risk overloading and destroying the hyd pump you have rebuilt or reman that was purchased.
    please e-mail me at hf_hydraulics@hotmail.com as so i can better help.
    there are setup procedures i can send you.
    you should also verify that the hyd pilot (remote) hoses are connected to the proper fitting on the pumps before you start.
    with the ignition in the "on" position you should be reading with a digital volt meter
    on the two wires to the solenoid of the pumps 24 vdc.
    in the right hand console on the side plate, close to the cab floor and just ahead of the computer there should be an access hole. in that hole there is a kpss release switch, with this switch flicked down -> computer control is on.
    obviously facing up is "off" or "release".
    release is a limp mode. you never want to run the machine prolonged this way.
    its too hard on the hyd pumps.
    cheers!

  9. #54
    Junior Member
    Join Date
    Dec 2010
    Location
    PA
    Posts
    4
    Kobelco wont start, its a SK130, serial # YPU2331 and it has 4881.5hrs. Our employee messed it up when trying to start it, not sure exactly what they did but I know they used jumper cables and a boost box at the same time, they obviously did something wrong because the boost box back fed or something and it blew apart. It wont start now and all it does is click. Where would be the first place to start?

  10. #55
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    Jul 2008
    Location
    CANADA
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    433
    hi ricko836,
    i just e-mailed some elec schematics for your model and eng type.
    call me when you've printed them out and when you are at the machine troubleshooting the probelm.
    if i was you i'd be sure to bring 2 new batteries # 31A-1000
    new crimp battery cable ends to clean up your cable connections and ground connections
    as well as a rebuilt starter.
    or either have yours taken off and rebuilt.
    one thing i find both operators and mechanics tend to leave out on their circle checks is that the batteries are a fluid level too.
    checking fluid and grease points should also include the batteries. out of sight out of mind they get forgotten.
    when topping a battery top to indicated level, not up the vent holes, plus add distilled water.
    cheers!

  11. #56
    Junior Member
    Join Date
    Dec 2010
    Location
    B.C. Canada
    Posts
    5
    Mr Kobelco knows what's up with these machines! Thanks again Adam!

  12. #57
    Member
    Join Date
    Nov 2009
    Location
    USA
    Posts
    57
    Hi Mr Kobelco,

    Hope you can help me with another import headache i've run into.
    We brought down a 1996 Kobelco SK220-3 and it was working fine, but now when i turn the key i get and error code saying "CPU controller 17".
    Does this mean the computer is kaput and i need a new one? Also the machine wont even start now, most of the time and and we have to manually hold the throttle open to get it going.

    Any advise is much appreicated.
    The serial number is LLU0707 if that helps.

    Cheers.

  13. #58
    Probationary Member
    Join Date
    Jan 2011
    Location
    NW Ohio
    Posts
    1
    0Hello Mr. Kobelco.
    Looking for an aftermarket Hydraulic pump for the following.
    SK200LC Mark IV, SNYQU4414
    Kobelco Pump Assy. 2437U389F2
    This is the main pump(s) off the rear of the engine. It is a two ? Tandem pump that Kobelco will only sell as a complete unit. Looking for an aftermarket supplier that will sell either the complete pump or the half that I need.

    A manufacturer of this assy. and part number would also help to see if my hydraulics shop can attempt to rebuild this unit.

    email barnesrl@embarqmail.com or a call would be greatly appreciated.
    419-513-1106 cell 419-238-4749
    Thanks
    Bob

  14. #59
    Senior Member
    Join Date
    Jan 2009
    Location
    Southern California
    Posts
    446
    Bob,

    I can help you with that.
    I stock new complete units, rebuilt units and all the parts you would need to rebuild your current unit.
    It is a double pump stacked together.
    The pump is a Kawasaki K3V112DT series.
    Where do you have it for repair?
    If you haven't taken it to a hydraulic shop, we can use ours.
    When it comes to excavator hydraulic pump, we can be the one stop shop for you. Same goes for excavator final drives and swing motors.
    New, rebuilt, parts to rebuild or repair and return.
    You can give us a call at 1-800-828-8909 Mon-Fri 7:30-4:00 PDT or I'll try and call you tomorrow. (I have out of town visitors coming in for the week, so it might be tough for me personally to call you) If I'm not available (Todd) ask for Jay.

  15. #60
    Resigned
    Join Date
    Jul 2008
    Location
    CANADA
    Posts
    433
    hi Sripola,
    i have had cpu 17 come up now and then.
    first check your 5 amp fuses supplying power to the computer.
    if fuse loosens off you'll get a voltage drop and in some cases the cpu 17 will display.
    keep me posted.

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