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swing motor leak

  1. J

    Hitachi EX120-3 Hydraulic Leak Swing Valve Brake

    Good Afternoon, I have a Hitachi EX120-3 excavator with a hydraulic leak coming through the o-ring behind the front anti shock valve cover located on the top side of the swing brake valve mounted on the top of the swing drive. The round shock valve cover is fastened with 6 socket head 5mm...
    • jadamson22
    • Thread
    • anti shock valve cover leak brake valve cover leak hitachi ex120-3 swing motor hydraulic oil leak swing motor leak
    • Replies: 1
    • Forum: Excavators
  2. E

    EX120 - Swing motor gear oil leak (Pictures)

    Hi Everyone, EX120. Have two issues with the swing motor reduction gear unit. 1. The unit is leaking gear oil through the slew ring & onto the belly almost as fast as it goes in, almost... 2. The reduction gear unit housing is cracked at the bolt support flange holes but has been stable for a...
    • Egetebee
    • Thread
    • ex120 gear oil leak reduction gear oil seal swing motor leak
    • Replies: 88
    • Forum: Excavators
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