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Recent content by MCF

  1. M

    Hitachi ex100-2 parts manual

    Does anyone have a parts book for a hitachi ex100-2 laying around that they would sell, or a digital version they are willing to share? Thanks!
  2. M

    Hitachi zx120 value

    Where are you located?
  3. M

    Hitachi ex200-3 hydraulics pulsing

    I don’t know about the first part, but I do know that when the pilot line stops pulsing it means you have problems. Pulsing is good.
  4. M

    Hitachi EX100-2

    Pump was gone through by a reputable shop the same time as the engine was overhauled about 300 hrs ago. So I would think that isn’t the issue. You can hear the oil bypassing in the valve bank when you bottom out any function I’ve had both reliefs out and re-sealed now, also tried a new relief on...
  5. M

    Hitachi EX100-2

    There are no blink codes at all, and controller blinks normally without jumper in diagnostic port
  6. M

    Hitachi EX100-2

    Alright, I really need some help guys. I have now adjusted the angle sensor to 4.412v, it was at 4.745 before adjusting. And also swapped solenoids on pump with no change. Could it be the DP sensor? I’m starting to lose sleep over this thing. Haha
  7. M

    Hitachi EX100-2

    I replaced all of the o rings on the main(top) relief but I did not remove the surge(bottom) relief. I figured I’d have to drain the hyd oil to do that.
  8. M

    Hitachi EX100-2

    So the spool that I can see when I remove the relief valve is the unloading valve correct? That seems to move with a magnet ok. Both the relief valve on top and the surge relief on bottom are adjusted all the way in, and I am only getting 4200 psi.
  9. M

    Hitachi EX100-2

    Ok, I’m seeing where you are at on the valve now. What you have highlighted in green is what the service manual calls the relief valve, and number 11 on your diagram is called main relief when the service manual calls it the surge relief. So now I’m even more confused. I have had the relief...
  10. M

    Hitachi EX100-2

    what section of the service manual is that in? I’m having trouble finding it. What part usually sticks? Do I need to completely disassemble the valve to get to it or can I just take the plug out on the top and make sure the spool is moving freely with a magnet? Also, Will I have to drain the...
  11. M

    Hitachi EX100-2

    Today I replaced the main relief valve, with no change. Then I screwed the surge relief in and also didn’t change anything. I cannot get more than 4200 psi on the outlet test port on the pump. All functions make the same pressure. Where do I go next? Angle sensor adjustment? Thanks.
  12. M

    Hitachi EX100-2

    Where is that one located?
  13. M

    Hitachi EX100-2

    It does, and I played with those. Those seem to change speed but do nothing for power
  14. M

    Hitachi EX100-2

    We just bought a Hitachi EX100-2. When we went and looked at it, ran great, hydraulics were fast, but were unable to actually dig with it. When we got it home and went to dig a hole I was very disappointed. Hydraulics are fast, but it is short on hydraulic power. I checked pressure at the pump...
  15. M

    Hitachi EX100-3 problem with relief valve

    Did you figure out your machine? I’m having the same issue with mine. With the main relief screwed all the way in I’m only getting about 4,000 psi. All of my electronics are working, hydraulics are fast, but no has no power.
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