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servo controls problems

  1. volvoeire

    Volvo EW140B

    Hi all , Just started working on a new to me EW140B wheeled .. Main Boom lifting fine, if push servo forward to lower it drops like a stone!!no power if tried to raise machine either. Lever feels normal. Haven't done any investigation yet but I'm presuming a broken spring in spool valve, or...
    • volvoeire
    • Thread
    • ec140 servo controls problems volvo wheeled excavator
    • Replies: 9
    • Forum: Excavators
  2. D

    Hanix 15a servo controls not working

    Hello new to this forum. We have an intermittent problem with our hanix h15a 1995 mini digger 5000hrs. The engine starts runs fine, the tracks and blade also work fine. For some reason the servo controls stopped working, no power to boom arm, bucket or swing. The problem occurred a week ago...
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