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ex120

  1. C

    Ex120-3 bogging only when warm

    Machine: Ex120-3 Hours: 4500 Problem: Runs fine first 45 minutes of each day, then (without over-heating) it bogs-down any time there is the slightest use of the hydraulics. Also, whether cold or warm, the engine idles and runs fine at any rpm. The problem is only when the slightest load is...
  2. J

    Hitachi EX120-2 30 or 36 inch digging bucket wanted

    Looking for a digging bucket for a Hitachi ex120-2, either 30 or 36 inch digging bucket. 65 mm pins
  3. N

    Hitachi EX120 joystick/thumb wiring issue

    Looking for help and/or possibly a wiring diagram or schematic for a hitachi ex-120-3? Had it tore apart for another repair and now the thumb will not open or close. Both open and closed buttons on the joystick have continuity when pressed, but doesn’t seem to have power to the circuit. I can...
    • NutTech123
    • Thread
    • ex120 excavator hitachi 120-3 hitachi electrical problems
    • Replies: 2
    • Forum: Excavators
  4. D

    Hitachi EX120-5 Aux no reversing ?????

    Hi I have a ex120-5 which has aux piping, it seems to operate the tilt bucket fine but it will only open my grab bucket & not close it, *cylinder on the bucket is fine as the bobcat will open & close the bucket, I have connected each side of the aux lines together with an open line & pumping...
  5. T

    EX120-2 Hydraulics

    Does anyone actually use the hydraulic tank heater? The manual said, if the tank is below 86F select the tank heater until the light goes out. I’m going to install a seal kit for the main pump, any recommendations who I should order the kit from? Prefer ordering inside USA. Can someone post a...
  6. 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
  7. T

    what does the EX120 in hitachi ex120 excavator stand for?

    i am working on a school project and need to know what the EX120 in the hitachi EX120 excavator stand for?
    • trevorfoldy
    • Thread
    • definition ex120 help hitachi hitachiex120
    • Replies: 2
    • Forum: Excavators
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