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main control vavle

  1. P

    Bucket cylinder internal damage, what to look after repair?

    Hey guys, my EW180C Volvo had a bucket issue, where it would open or close under it 's weight. Cylinder dissembled and carnage showed up. Tomorrow I m waiting the cylinder back from the machine shop. What I want to ask is what should I look for before I put the machine back to work? Debris and...
    • pados1002
    • Thread
    • bucket damage ew180c hydraulic cylinder main control vavle spool spool valve
    • Replies: 13
    • Forum: Excavators
  2. J

    EX120-2 system base pressure too low

    Hey everyone, I am looking for some more brain power with this problem. Machine is a 120-2 with what I believe to be a 120-3 main control valve (mcv). This means it does not have the adjustable pressure regulator on top of the unloading valve like the -2. Its on the bottom instead. According...
    • Jason Klassen
    • Thread
    • cracked control valve dp sensor ex120-2 ex120-3 hitachi internal crack main control vavle pilot pressure pressure unloading valve
    • Replies: 122
    • Forum: Excavators
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