• 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!

hitachi electrical problems

  1. B

    John Deere 2154D (hitachi -3 zx250 size with Deere engine) stalling engine when operating hydraulics at low rpm.

    Hello all, as above when operating this machine at low idle rpm like a warm up scenario, if anything more than 1/4 or half movement of the joystick booming up or arm out it will pull the engine down and if not feathering the controls back toward neutral it will stall the engine. i have diagnosed...
  2. R

    Hitachi EX 120-3 electronic schematic or resistor value needed!

    Hey wondering if anyone can help me out, good friend of mine has the Hitachi EX 120-3, 1995 or 1996, burned out a resistor on the PVC unit. It's R1 and I cannot find a schematic anywhere. Downloaded two different shop manuals and neither of them show any electronics. I ohmed it out and one day...
  3. B

    Hitachi ZH210 hybrid - grease system reset

    Hello i wanted to ask a question about a Hitachi ZH210lc hybrid. I have automatic grease system , since yesterday i have a red light at the button where its supposed to auto grease itself , i doesnt grease without me pushing the grease button . The grease tank was empty so i yesterday i filled...
  4. 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
  5. A

    Hitachi 150-3 Problem Starting

    Hello all, I have a problem with my Hitachi 150-3 year 1998. I bought this a few months ago and have had several problems with the digger just not starting. It will work well for a few days but then stop working, very frustrating! I was working on the digger and there was a large thud on the...
    • Ailbhe Rice
    • Thread
    • digger hitachi electrical problems hitachi ex150
    • Replies: 0
    • Forum: Excavators
  6. S

    Hitachi ex60-2 power loss

    Hi all I’m new to the page. Can anyone help or share there knowledge about this. We have a ex60-2 that losses power not long after warming up. Under load/ digging, slewing and tracking. It just losses power to the point it wants to stall. We changed the fuel and air filters, also checked and...
    • slye
    • Thread
    • hitachi hitachi electrical problems hitachi ex 60
    • Replies: 17
    • Forum: Excavators
  7. H

    Hitachi ZX225us Slow hydraulics

    My zaxis 225us just went slow in 30-1hr just before starting in the morning... Are the two soleniods at the pump controls the load?
    • Havs ke
    • Thread
    • hitachi electrical problems slow hydraulics slow when hot
    • Replies: 1
    • Forum: Excavators
  8. S

    Hitachi EX135UR-5 won't throttle up

    I have a 2002 hitachi ex135ur-5 that won't throttle up. Worked fine then sat for a couple weeks and the problem started. The key will start the machine but has no effect from the on. It will only idle and they key will not shut it off. I have to use the manual emergency stop cable. I have...
Top