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hitachi

  1. Q

    Hitachi ex120-3 cavitation/aeration

    Hello all, looking for some help diagnosing my old beater. In the past few hours of use, the machine will whine like it's out of fluid under heavy load, particularly when swinging, but eventually with any function. Power is about 1/2 what it was before issue. The hydro tank is very bubbly after...
    • qwertylad
    • Thread
    • cavitation ex120-3 hitachi hydraulic
    • Replies: 6
    • Forum: Excavators
  2. M

    Unusual erratic noise from hydraulic pumps (Hitachi EX300)

    Hi everyone! We are hearing an unusual noise from the hydraulic pumps of our Hitachi EX300-1. It has twin axial piston pumps. The noise is difficult to describe but it is erratic/random and the pumps sound stressed (Attached is a short video of the pumps making the noise). It does not sound...
    • MKF1
    • Thread
    • cavitation ex300 excavator hitachi hitachi 300 hydraulic pump
    • Replies: 12
    • Forum: Excavators
  3. M

    Hitachi EX300LC-1 Hydraulic Oil Selection (ISO 68 vs ISO 46)

    Hi everyone I recently purchased a Hitachi EX300LC-1 in reasonable condition for a small granite mining operation. The machine will be using an NPK hydraulic breaker for around 50-60% of its operating time. I am unsure about the viscosity of hydraulic oil which should be used in the excavator...
    • MKF1
    • Thread
    • correct hydraulic oil ex300 hitachi hitachi 300 hydraulic oil
    • Replies: 14
    • Forum: Excavators
  4. 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...
  5. Bad billy

    Ex75ur hand throttle replacement

    Hello all, Looking to replace hand throttle ,have anybody replaced one before?i guess I need to take out operators seat and such to get at the throttle lever .Is there anything to watch out for in there?Is this a big job for a novice mechanic?Has anybody bought and new cable before ,if so...
    • Bad billy
    • Thread
    • ex75ur hitachi japanese model throttle cable
    • Replies: 2
    • Forum: Excavators
  6. E

    EX200LC-3 Travel Speed

    Hi, First thank you for all the resources. We've solved several issues following other posts. We have an EX200LC-3 (14C-85139) machine where the travel speed does not change with the travel speed switch. Whether low, medium, or high is indicated in the cab the speed remains slow. The auto idle...
  7. K

    Hitachi EX200LC-3 problem

    Video 1 Video 2 My hitachi 200exlc-3 is loaded up on her hydraulic pump with her idled up really high and when I start using the hydraulics the engine wants idle down and shut off I had a scanner plugged into it and was told to change the angle sensor, so after paying 1300 for the angle...
  8. D

    Ex-200 w/ conversion kit stalls when boom is lowered

    Guys please help. I have an hitachi ex200-2 that has conversion kit and no electronics. Every thing works fine except when i lower the boom. The engine almost stalls even though the pressure is only 150-180 at the shuttle valve. What may be the cause of the problem?
    • danielDND
    • Thread
    • excavator hitachi hitachi ex200 hitachi ex200-2
    • Replies: 1
    • Forum: Excavators
  9. Z

    Calibración motor de aceleración

    Compañeros bien día tengo un problema con una HITACHI zx 200-3 cambie el motor de aceleración y no e podido saber cómo calibrarlo, si alguien me da información al respecto lo agradezco, muchas gracias.
  10. H

    Anyone chasing a Hitachi UH082 Service manual?

    I've got a physical copy in excellent condition up for sale on ebay at the moment that might help someone here out chasing one. Happy to post anywhere.
  11. D

    Hitachi 50 Weird no-start or power to modem

    I have a dead 2015 Hitachi ZX 50u excavator. I went out, started it today, and walked away to let it warm up, came back 5-10 min later and it had shut down. I turned the key and the windshield wiper twitched but nothing happened, the screen won’t even turn on. Cycled again and not even a twitch...
    • derekaoja
    • Thread
    • excavator hitachi john deere mini excavator no start
    • Replies: 2
    • Forum: Excavators
  12. K

    Hitachi UH083/UH07-7 Service Repair Manual

    Hi all, Anyone have a credible non-scam pdf manual website I might be able to use for a hitachi UH083/UH07-7 service manual? Also if anyone has and could email to me would be extremely appreciated Email:michaelwhite11001@yahoo.com Thanks
  13. C

    Hitachi Zaxis 120-1 Swing Motor Leak

    I have a Japan-imported ZX120-1 used to build agricultural terraces here in the Malaysian part of Borneo. It has clocked about 17000 hours so far. Hydraulic oil mixed with gear oil started to overflow from the gear oil inlet at the bottom of the swing motor. Just prior to the leak, the swing...
    • cryzpene
    • Thread
    • hitachi hitachi 120 zaxis 120-1
    • Replies: 4
    • Forum: Excavators
  14. K

    Hitachi UH083 Replacement Swing Transmission Head

    Hi all, new to the forum and new to the heavy equipment life. My father/boss recently purchased a used Hitachi UH083LC and after about a week of usage the head on hydraulic pump/swing transmission cracked (we realized the previous owner must’ve cracked and welded it). We’ve tried local...
  15. R

    Hitachi zx135us-3 2015

    Hi everyone, I’ve recently purchased a 2015 135us-3 excavator. I’ve got a couple of questions. Is it possible to fit a progressive switch for tilt bucket operating? It is button style at the moment and each press of the buttons make the tilt violently go left and right. It has a an air...
  16. Bad billy

    Pre fill hydraulic side of final drive before install?

    I bought a final drive for my ex75ur The company wants me to prefill the hydraulic side of unit or the Warranty is void ...The gear side is full off 80/90...how do you fill it ...?
  17. Bad billy

    Ex75ur final drive problems

    Blew my cone seal on my final drive .Is there an inline filter on the return lines?put another drive in and the same thing happened after 30 minutes ,so I have problem of the drive not releasing the pressure.Has any one have any input?Need to find hydraulic schematics on the Hitachi ex75ur ?Any...
    • Bad billy
    • Thread
    • final drives help hitachi hydraulic
    • Replies: 2
    • Forum: Excavators
  18. F

    Looking for a used engine for my 1998 Hitachi Ex350H-5.

    Does anyone know where I can find a used engine for my excavator or maybe you know someone that has one? It has an Isuzu B-6SD1T engine. I'm located in northern Alberta. I keep getting coolant in the oil and I can't find where its coming from. Starting to suspect a cracked block so I am...
    • FarmerToby
    • Thread
    • coolant coolant in oil engine hitachi hitachi ex 350 isuzu isuzu 6sd1t john deere oil salvage
    • Replies: 4
    • Forum: Excavators
  19. F

    Hitachi Ex350H-5 getting coolant in oil

    Hi everyone, this is my first time posting. I'm a young farmer up in northern Alberta. I am not the most mechanically minded person but I try to do any mechanicing I can before hiring someone. This excavator was my first heavy equipment purchase. I bought it last year and I plan on using it to...
    • FarmerToby
    • Thread
    • coolant in oil ex350 ex350h-5 excavator help hitachi john deere troubleshooting water pump
    • Replies: 5
    • Forum: Excavators
  20. C

    Hitachi 120-2 Won't Swing

    Recently picked up a Hitachi 120-2, previous owner lost swing function during use. He rebuilt swing motor and had local Deere service check pressures, they checked out ok. Unit free swings by hand while all other hydraulic functions work properly (Boom, Travel and Bucket). Could this be a...
    • Chase D.
    • Thread
    • 120-2 hitachi hitachi hydraulic swing
    • Replies: 17
    • Forum: Excavators
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