1. Thank you for visiting HeavyEquipmentForums.com! Our objective is to provide industry professionals a place to gather to exchange questions, answers and ideas. We welcome you to register using the "Register" icon at the top of the page. We'd appreciate any help you can offer in spreading the word of our new site. The more members that join, the bigger resource for all to enjoy. Thank you!
  2. ALL NEW MEMBERS READ THIS FIRST!! Thank you for joining Heavy Equipment Forums! If you are new to forums we communicate with "Threads", please search our threads to see if your topic may have already been answered and if not then click "Post New Thread" in the appropriate forum. This will allow all of our members to see your question and give you the best chance to be answered. After you've made a number of posts you will graduate to Full Member status where you'll see a few more privileges. Following these guidelines will help make this the best resource for heavy equipment on the net. Thanks for joining us and I hope you enjoy your stay!!

PC210-8 all functions acting very slow

Discussion in 'Excavators' started by rockfall, Oct 17, 2015.

  1. rockfall

    rockfall Well-Known Member

    Joined:
    Jul 17, 2011
    Messages:
    97
    Location:
    Dh
    Hi guys,

    For the last three weeks our PC210-8 Komatsu is acting slow. The boom tracks and stick is completely slow while the bucket speed is reasonable. Had the local Komatsu electricians and hydraulic mechs work on it together for 12 days but no use. They said they have to open the main control valve and pump and I 100% think there is no problem with it. The electrician says that they have done their part according to him and there is no electric fault. The rock breaker works fine. Raising the boom and stick is very slow but comes back normal. The tracks are slow in both directions. Before the machine used to act slow around 3 to 4 hours of work. Now its slow even when the machine is cold. Any clues guys.

    Thanks

    Rockfall
     
  2. John C.

    John C. Senior Member

    Joined:
    Jun 11, 2007
    Messages:
    11,050
    Occupation:
    Machinery & Equipment Appraiser
    Location:
    Northwest
    If there are no fault codes it is most likely not the electrics. What you are describing sounds like a pump that has a problem. How many hours on this component?
     
  3. rockfall

    rockfall Well-Known Member

    Joined:
    Jul 17, 2011
    Messages:
    97
    Location:
    Dh
    There are no faults and the hours are around 8000. Aldo john can you check your mail.
     
  4. jey_c

    jey_c Senior Member

    Joined:
    Oct 21, 2010
    Messages:
    257
    Location:
    france
    12 days! I think that's too much
    They should flowmeter the pump to tell if it is the pump itself or the main control valve.
    Anyway if they remove the pump and the control valve, it is better to test bench them before the disassemble
     
  5. rockfall

    rockfall Well-Known Member

    Joined:
    Jul 17, 2011
    Messages:
    97
    Location:
    Dh
    Jey, gauges show very low pressure on the pump
     
  6. dogcyber

    dogcyber Member

    Joined:
    Sep 4, 2012
    Messages:
    23
    Location:
    Toronto
    How's your engine rpm?
     
  7. jey_c

    jey_c Senior Member

    Joined:
    Oct 21, 2010
    Messages:
    257
    Location:
    france
    I think it is better to start with the pump. The dealer should have a test bench or at least work with a loal hydraulic shop that should have it.
    So if they remove it, go and check the P-Q curve before they install your pump again. Everybody will be happy
     
  8. rockfall

    rockfall Well-Known Member

    Joined:
    Jul 17, 2011
    Messages:
    97
    Location:
    Dh
    The rpm is ok
     
  9. John C.

    John C. Senior Member

    Joined:
    Jun 11, 2007
    Messages:
    11,050
    Occupation:
    Machinery & Equipment Appraiser
    Location:
    Northwest
    Didn't see anything in either email box?
     
  10. rockfall

    rockfall Well-Known Member

    Joined:
    Jul 17, 2011
    Messages:
    97
    Location:
    Dh
    Check now. Have sent you a pm
     
  11. jey_c

    jey_c Senior Member

    Joined:
    Oct 21, 2010
    Messages:
    257
    Location:
    france
    Any news?