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Liebherr LTM1160-2

Discussion in 'Cranes' started by Evans, Mar 26, 2021.

  1. Evans

    Evans Well-Known Member

    Joined:
    Nov 12, 2015
    Messages:
    76
    Location:
    Harare Zimbabwe
    Hello everyone, I have a headache, 2 boom sections are out at 46 46 they developed a malfunction. , the booms are refusing to boom in. The ram which drives the booms is just making slight movement on the computer screen but not picking up boom .1&2 booms. .all other functions are working well except boom in . The ram is at the top with the boom showing slight movement but booms not moving. Your assistance will be greatly appreciated.
     
  2. Evans

    Evans Well-Known Member

    Joined:
    Nov 12, 2015
    Messages:
    76
    Location:
    Harare Zimbabwe
    Now i want to get out of this job site , is there a way I can bypass the system to get these booms in . I am also suspecting the locking & unlocking pins that locks the boom.
     
  3. crane operator

    crane operator Senior Member

    Joined:
    Mar 27, 2009
    Messages:
    5,503
    Location:
    sw missouri
    Liebherr tech support is the best solution, they will walk you through emergency/ manual retract in the computer. If you aren't careful in manual mode you can really mess things up.

    It is possible in that configuration to use another crane lifting the tip, to retract the cylinder, and pull the top covers and retract the locking pins one at a time manually, and use the second crane to let the sections down. But you better be sure you know what you're doing, or its going to get expensive or hurt someone.
     
  4. Cranepedia

    Cranepedia New Member

    Joined:
    Jun 11, 2021
    Messages:
    1
    Occupation:
    Owner
    Location:
    Singapore
    Evans, it could be the lock pin or the spring. Lock pins could be "mushroom" because of frequent hard pinning or the spring has loses its flexibility..