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Grove GMK 4075 counterweight holder lever

Discussion in 'Cranes' started by sam123, Sep 12, 2017.

  1. sam123

    sam123 New Member

    Joined:
    Sep 12, 2017
    Messages:
    1
    Location:
    hawaii
    Do you know when is the counterweight holder lever in use? and what is the counterweight holder lever use for anyways? when full counterweights installed, it doesn't seems like the counterweight holder lever engages with the counterweight base plate hook? can any one help me out. I have a picture of the mobile crane with the counterweight holder lever. i"m still new to mobile crane. Thank you guys. Grove GMK 4075 conterweight holder lever.JPG
     
  2. crane operator

    crane operator Senior Member

    Joined:
    Mar 27, 2009
    Messages:
    1,120
    Location:
    sw missouri
    Its hard to tell from the picture, but is it possible that it has a proximity switch, and you adjust it to counterweight height, with the height of the lever, making a signal- telling the computer how much counterweight the crane has mounted?

    Some of them just have a proximity switch, to indicate that the counterweight is fully raised, and will signal if the cylinders allow it to droop. (Liebherr)

    I've run a gmk 4070, but it didn't have that on it.

    I'm sure it isn't to hold the counterweight up, that's all from the top cylinders.

    Operators manual is going to be your friend on this one, may have to contact dealer.

    Some clearer pictures of the arm and what it's mounted to/ wiring would help.
     
  3. Kiwi-truckwit

    Kiwi-truckwit Well-Known Member

    Joined:
    Nov 20, 2016
    Messages:
    51
    Location:
    New Zealand
    I'm not sure on the TMS as they aren't really common here, but on the Grove mobiles it simply prevents the counterweight from rocking around when mounted. 15052618079051233075294.jpg