• Thank you for visiting HeavyEquipmentForums.com! Our objective is to provide industry professionals a place to gather to exchange questions, answers and ideas. We welcome you to register using the "Register" icon at the top of the page. We'd appreciate any help you can offer in spreading the word of our new site. The more members that join, the bigger resource for all to enjoy. Thank you!

Recent content by shelbyk7

  1. S

    High speed solenoid wiring repair? Assistance

    Has crack in it, and not as tight fitting over the shaft as my other solenoid
  2. S

    High speed solenoid wiring repair? Assistance

    Hitachi ex120-3 Recently noticed My High speed solenoid had a tear in the insulation on both wires and one actually has some strands broken (pictures attached) can the black plug be taken out of the metal cap so wires can be fixed without damaging the entire solenoid?
  3. S

    Assistance with hitachi EX120-3

    Update had some things come up and wasn’t able to work on it much , however the past couple weeks I have been List of completed- All new hyd fluid, drained cylinders as well best I could (old fluid was very nasty and had tiny bits of rubber from what I believe is the cylinder seals that are...
  4. S

    Ex120 controls not working after maintenance

    Did you prefill the pilot filter canister with oil ? i also have had a slow leak shown as #2 in attached picture being low and a slow leak, it could have in theory leaked a lot of pilot circuits fluid out and take a while to prime it?
  5. S

    Ex120 controls not working after maintenance

    can it take a while to get the pilot all primed up? I could hear something really faint when moving the sticks
  6. S

    Ex120 controls not working after maintenance

    I bled the pumps at the 6mm and 8mm allen head screws circled in picture I have below
  7. S

    Ex120 controls not working after maintenance

    Have a ex120 that’s been down a few months for maintenance and started it up today and when I hopped in it and unlocked the pilot, nothing happened. changed hydraulic fluid, rebuilt lift pump what’s the most likely issue to check for?
  8. S

    Hitachi ex120 swing motor leaking (what else to look for?)

    Great, that’s what I’m doing at the moment
  9. S

    Hitachi ex120 swing motor leaking (what else to look for?)

    Fair enough, i just had some panels off and doing maintenance when I saw it leaking pretty good amount. Seperate of this thread is the machine was having some normal ex120 issues of jerky controls and saw this as I was doing some other stuff to it and was curious if this sensor would cause...
  10. S

    Hitachi ex120 swing motor leaking (what else to look for?)

    Thanks i have found this sensor leaking onto the tracks behind the cab. Some kind of Pilot sensor? It’s kind of busted open and leaking at the break. Picture below, Is this important for function? Or can it do without?
  11. S

    Hitachi ex120 swing motor leaking (what else to look for?)

    So the electric fuel pump brand is- “ Facet Posi-Flow” Here are the specs, not sure what exact model is in mine but looking today . Is 10psi enough ? “ Available Features 12 inches minimum dry lift 23 - 40 GPH 1.5 - 10 PSI ESD compliant 1.5 amp average Diesel Priming and Self Regulating...
  12. S

    Hitachi ex120 swing motor leaking (what else to look for?)

    Also. uFFEX i rebuilt fuel pump, it had an electric in line when I got it rebuilt it, would it hurt to leave the electric just to assist? Any diagram for how fuel lines and system should be routed? Not sure if original owner bypassed the mechanical lift pump or not when went electric
  13. S

    Hitachi ex120 swing motor leaking (what else to look for?)

    Getting ready to add fluids back into machine Is there anything special I need to do? I drained pump and tried getting all the fluid and it because the fluid was nasty put some in swing motor before installing it. Anyway I Can put any in pump before starting it up?
  14. S

    Hitachi ex120 swing motor leaking (what else to look for?)

    Okay, that’s what I was confused about, I thought you were saying paraffin, the wax and couldn’t make sense of it i do have kerosene ,thanks
  15. S

    Hitachi ex120 swing motor leaking (what else to look for?)

    If no accesss to hot pressure washer, will cold pressure washer work?
See more
Top