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Questions about operation of a JRB hydraulic quick disconnect on a Komatsu PC 200 LC

Discussion in 'Excavators' started by Blu Ox, Dec 2, 2015.

  1. Blu Ox

    Blu Ox Member

    Joined:
    Sep 18, 2015
    Messages:
    21
    Location:
    Minnesota
    We recently purchased a Komatsu PC200 LC-7 and is equipped with the JRB quick connect option.
    The dealer who sold us this machine is not familiar to this system and neither am I.
    I have been searching YouTube but nothing found.

    I assume after I trip the switch in the cab, I am to roll the bucket...I hope.
    Unfortunately the machine is headed to a job site otherwise I'd run outside and give it an experimental run.

    If any of you experts out there have knowledge and know the steps to activate the system, I would be grateful for a reply.
    Thank you in advance.

    :usa
     
  2. AntonioRocha

    AntonioRocha Well-Known Member

    Joined:
    Jan 17, 2010
    Messages:
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    Location:
    portugal
    Im not familiar with that brand of hydraulic quick hitch, altough you may follow the hydraulic pipes from the quick hitch, then you will find a solenoid valve with a bunch of pipes attached, two o them shoud go to the quick hitch, to open or close, other is going to the return to hydraulic tank, other should bring pressure from somewhere, in a Komatsu we have here, it picks pressure in the line that makes closing the bucket, só its always needed to make the opening the bucket movement to fully open the quick hitch, other machines pick the pressure directly drom the hydraulic pump, só its not needed to make any movement to make the quick hitch to open, just press a switch inside the cab.
     
  3. buckfever

    buckfever Senior Member

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    southwest pa
    You got the idea. Flip the switch and curl the bucket in to apply pressure to the coupler. Once you switch buckets curl the bucket in and flip the switch off. A good habit to get into is after you change buckets always push the back of the teeth against the ground. This way if the connection is not done right the bucket will come of then and not in the ditch or God forbid on someone's head.
     
  4. John C.

    John C. Senior Member

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    I always curl the bucket before shifting the toggle. I am assuming this is a pin grab quick coupler. I can't recall if the JRB has the drop lever that keeps the bucket from fully releasing unless it is curled and the stick all pulled in. Buck fever is right on in checking that it is fully latched. It is also good to make sure anytime you might have a man working under the bucket.
     
  5. CDNDIESELMONKEY

    CDNDIESELMONKEY Well-Known Member

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    Location:
    ONTARIO
    I have a manual for the JRB coupler. Send me an email or PM and i can scan you a few pages of it.
     
  6. CDNDIESELMONKEY

    CDNDIESELMONKEY Well-Known Member

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    I have a manual for the JRB coupler. Send me an email or PM and i can scan you a few pages of it.
     
  7. CDNDIESELMONKEY

    CDNDIESELMONKEY Well-Known Member

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    Location:
    ONTARIO
    If you go to this website; http://www.paladinattachments.com/Manuals, then go to - Search Paladin's Technical and Parts Service Library here. On the left go to JRB operators manuals and you can print the manual you desire. I think you probably want the POWER LATCH one.
    Hope this helps.
     
  8. qball

    qball Senior Member

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    Occupation:
    local 150 operator
    Location:
    il
    Pull the stick in more than 90% to the cab, hit the switch, cycle the bucket curl.
     
  9. Shimmy1

    Shimmy1 Senior Member

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    North Dakota
    Same coupler I have. The lock likes to stick when it's cold. To unstick, curl the bucket all the way in. Then, you can look down under the main pin hook and see the lock. It'll be right next to the cylinder. Couple taps with a decent size bar will pop it out. Flip switch, and hold bucket curl-in for about 5-7 sec and that's it. After you switch buckets, don't move switch back to "lock" until you have bucket fully curled.
     
  10. Blu Ox

    Blu Ox Member

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    Location:
    Minnesota
    Well that would be awesome.
    Thank you CDNDIESELMONKEY...THAT IS WHY I LOVE THIS SITE.
    anshallen@gmail.com

    I really appreciate your help
    Thanks again
     
  11. willie59

    willie59 Super Moderator

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    And grease those locking pins!
     
  12. Blu Ox

    Blu Ox Member

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    Location:
    Minnesota
    Thanks Shimmy!!!
    We've chatted before.
     
  13. Blu Ox

    Blu Ox Member

    Joined:
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    Messages:
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    Location:
    Minnesota
    Got it!!

    Grease is the cheapest warranty out there.

    Thanks for keeping me on my toes.
     
  14. Shimmy1

    Shimmy1 Senior Member

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    Location:
    North Dakota
    It's a coupler on an excavator, Willie. No locking pins, just a weighted arm that swings into place to prevent the pin grabbing mechanism from releasing. It only falls out of place when the bucket is more than 75% curled in. I put some JD cornhead grease in mine so it moves a little better when it's cold.