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ex 120-2

  1. S

    Hitachi EX 1 20–2 manual conversion kit

    Hi all. Unfortunately, I left the window open on my Hitachi during all the rain, and it looks like the lower computer unit (ECU/PCB – not sure of the correct name) has been water damaged. I’ll attach a couple of photos. It blows fuses 4 and 7 instantly, and the ECU starts smoking from the...
  2. S

    Ex 120-2 quick coupler hosing

    Hi all wanting to put a quick coupler on my excavator but not sure where to get the hydraulic pressure to run the quick coupler valve. It is not a spring loaded quick coupler so I assume it needs pressure to stay shut and pressure to open If anyone has done this and would mind sharing some...
  3. Brian K

    JD 490E & EX120-2 Engine Controller Compatability

    Can anyone tell me if the EC units in the JD 490E and Hitachi 120-2/3 are identical. I know the machines are physically the same but have different engines. I need a new EC computer. When I search for the part number (9109825) most hits are listed for the EX-120. I'd be grateful for any...
    • Brian K
    • Thread
    • 490e engine controller ex 120-2
    • Replies: 6
    • Forum: Excavators
  4. Syleng1

    Ex120-2 slow hydraulics

    Hitachi EX120-2 4500hrs. I tried to search this but my results were minimal and not relevant. I’ve had this machine 1.5 years and bought it whooped. Engines runs great and no smoke. Plenty of power but Hudraulics are leaking and pins and bushings are sloppy from previous owners lack of maintance...
    • Syleng1
    • Thread
    • ex 120-2 hitachi slow hydraulics
    • Replies: 4
    • Forum: Excavators
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